Wait so it’s not trailed
#Rokinon/Samyang 135mm discussion
shell wasp
i can’t tell send a better picture
like use snipping tool and send it on discord through your pc instead
velvet lark
Ok
velvet lark
like use snipping tool and send it on discord through your pc instead
What’s the snipping tool
shell wasp
go to the search bar and look up snipping tool
velvet lark
Ok
shell wasp
did you figure it out?
shell wasp
it looks like they’re a little bit trailed
velvet lark
Where is that 😭
shell wasp
what about snipping tool didn’t work
velvet lark
what about snipping tool didn’t work
When I do what it says it won’t work
shell wasp
open it, click + new, drag a window to what you want to snip, copy it, send it
shell wasp
When I do what it says it won’t work
like it won’t open?
velvet lark
open it, click + new, drag a window to what you want to snip, copy it, send it
I’ll do that
shell wasp
it looks a little trailed, just stack it and then in the final stack it’ll be easier to see
velvet lark
it looks a little trailed, just stack it and then in the final stack it’ll be ea...
Would the trail be the reason the galaxy moved
Like I couldn’t have been more precise with the polar alignment
It was insane
I’ll stack it any way rn
shell wasp
even if your polar alignment is perfect the gears in your mount aren’t perfect so there’s gonna be error
what mount is this
velvet lark
Star watcher 2i
shell wasp
yeah so the gears in there are far from perfect so your statrs are never gonna be perfect despite how close you get with your pa
solid raptor
It would also be beneficial to check your PA once in a while
velvet lark
It would also be beneficial to check your PA once in a while
True I’ll do it in a sec
I’m stacking it rn
I’ll show ye it
When it’s done
velvet lark
It would also be beneficial to check your PA once in a while
actually I kinda can’t because I can’t centre the 6 and 0 bc id have to move the arm or the mount
velvet lark
yeah so the gears in there are far from perfect so your statrs are never gonna b...
Also is it ok that the galaxy moved tho
solid raptor
Also is it ok that the galaxy moved tho
That ia due to the tracking error of the tracker
Issa normal unless it's strong
velvet lark
So it’s ok
shell wasp
Also is it ok that the galaxy moved tho
stacking will align it but it might look weird, again just stack it and see
shell wasp
k
velvet lark
Also it’s just lights obv
shell wasp
why didn’t you take any calibration frames?
velvet lark
I haven’t yet
I will when I’m done my lights
I accidentally cancelled the stack but I’d say it’s ok so I’ll do it properly tmrw
velvet lark
Ok so that was by my Roki (and it’s a little trailed but do the stars look in focus)
gleaming flare
it's out of focus
shell wasp
yeah it looks out of focus to me
velvet lark
yeah it looks out of focus to me
How badly
Like do I have to do a lens surgery on it
shell wasp
was that the smallest you were able to get the stars?
velvet lark
Yeah it locks at that
shell wasp
i’m not super familiar with this focus issue with the roki honestly, maybe someone else can chime in and give you some advice
velvet lark
Are ye able to fully tell because the stats a trailed so mabye there not
shell wasp
no it’s definitely out of focus
shell wasp
no i would say it’s a pretty significant amount
winter herald
yk how u lock focus , i think coz ur locking it u go into focus then the locking point is a bit out, so i recommend u do test exposures and adjust focus each time
@velvet lark
velvet lark
yk how u lock focus , i think coz ur locking it u go into focus then the locking...
So I’ll have to do a surgery on my lens
winter herald
no , you’re probs going past ur focus point , remember focus doesn’t stay the same all the time coz of temperature btw
chilly ingot
stopping down slightly will make focusing easyer tbh
f2.0 focusing is pain
generally 2.8 is nice 👌
velvet lark
Yeah it’s the sweet spot
uneven compass
@mystic loom do you know of any way to mess with backfocus/tilt without buying any crazy expensive accessories?
Mine really isn't that bad, but certainly could be better
mystic loom
Tilt? Just either the Astrodymium plastic shims (they’re meany to deal with severe tilt) or the Zwo thing which is 100
Back focus I found a great set of aluminum shims that include a 0.15mm shim so you can’t get more precise than that
Waiting on them from aliexpress
Will send link
chilly ingot
Waiting on them from aliexpress
same actually. i want to try "perfect" backfocus
still on its way
uneven compass
Also @shell wasp did you use any accessories in particular for cable management?
mystic loom
Mines a little am5 specific (blessed passthrough electricity) but like my cable setup
Lots of short right angle usb b
chilly ingot
Mines a little am5 specific (blessed passthrough electricity) but like my cable ...
got some of these 
shell wasp
Also <@527548478377689100> did you use any accessories in particular for cable m...
just cable loom
like so
smoky salmon
Mines a little am5 specific (blessed passthrough electricity) but like my cable ...
Your rig is a bit too powerful
mystic loom
Tbh though that tilt thing for the asi cameras has been a lifesaver
It’s awesome to know that once you have it dialed in the tilt is just done
mystic loom
Your rig is a bit too powerful
Lol I also own a 72mm f4.8 refractor and a Celestron c6
One mount to drive them all
Haven’t really done much with the c6 yet but will get around to it in the spring
Need a better guiding situation for it
civic mirage
Haven’t really done much with the c6 yet but will get around to it in the spring
QuivTheLazyGeek used a C6 with the Hyper Star mod quite a lot. Turns it into an absolute light bucket.
mystic loom
Maybe at some point I’ll get around to trying a hyperstar on it
chilly ingot
taming it would be fun to read up on
chilly ingot
hyperstar on a roki
Roki array directed to a hyperstar with mirrors 
Light speed broken
uneven compass
hyperstar on a roki
...it doesn't work like that
hazy copper
kek i know
uneven compass
Also that obstruction would be...
civic mirage
...it doesn't work like that
Anything is possible if you put your mind to it 
patent dove
imagine making this with Rokis
chilly ingot
imagine making this with Rokis
@mystic loom imagine tilt adjust a roki array like that with a stack of backfocus shims you just dropped on the floor.... then the baby alarm goes off
civic mirage
Those are pretty much just as fast. They also have bigger objectives.
mystic loom
god, dying a thousand deaths looking at that and thinking of the fussing involved
civic mirage
Believe those are Canon 400mm f2.8s if I'm not mistaken?
chilly ingot
yeah
i wonder if the 2.8 canon is sharp. the 400mm f4 supposedly is
the expensive giga fast lenses usually dissapoint
like the 300mm f2.8 is expensive and way too old for modern pixel size. needs to be stopped down to f4 
bokeh bro photographers dont care less for corners
civic mirage
i wonder if the 2.8 canon is sharp. the 400mm f4 supposedly is
I was thinking they were using the latest 400mm f2.8, but I may be wrong.
chilly ingot
I was thinking they were using the latest 400mm f2.8, but I may be wrong.
Mmm yeah think ur right, canon was involved in the project
patent dove
Those are pretty much just as fast. They also have bigger objectives.
$500 vs $12,000 a piece tho lmao
mystic loom
so I did the math on this:
https://www.aliexpress.us/item/3256804519318882.html?gatewayAdapt=glo2usa4itemAdapt
if you use the bayonet adapter from First Light Optics, and get the agena blue fireball filter drawer, you can fit the following on an imaging train:
- filter drawer = 16.4mm
- automated rotator = 10mm
- zwo tilt adapter = 11mm
- internal back indent = 6.5mm
- 0.6mm back focus shim to compensate for a 2.0mm filter = 0.6mm
44.5mm ✅
you could automate FOV rotation for multi target plans every night
I like my ASIAIR setup too much to introduce a rotator (and it's $400) but this was a fun thought experiment
solid raptor
If anyone is inclined to do so, a fresh Roki dataset is awaiting you here https://discordapp.com/channels/794642864218439681/1150887654276210768
solid raptor
so I did the math on this:
https://www.aliexpress.us/item/3256804519318882.htm...
Interesting calculation. Would sure solve my tilt
tired cypress
I was thinking they were using the latest 400mm f2.8, but I may be wrong.
300mm f/1.8s also popular for astronomy
chilly ingot
300mm f/1.8s also popular for astronomy
That horserace finish photo lens? Yeeeah so many of those kicking around
solid raptor
stainless steel backfocus shims arrived from CN
How thin is the thinnest?
mystic loom
oh for the love of god with theis heics
that 0.14 one is nominally 0.15 but i'll call that close enough
they're also labeled so don't need a caliper
solid raptor
Quite thicc
mystic loom
thinn
velvet lark
Guys btw my Roki is a good copy thankfully
The problem was that I was going slightly past focus
solid raptor
Noice
Quick and dirty edit of my data in https://discordapp.com/channels/794642864218439681/1150887654276210768
Im gonna try HOO tomorrow or sometime else because I couldnt reinsert stars today
Yeah, I didnt remove stars on that one...
patent dove
anyone know if the new highspeed L extreme has bad haloes like the standard one?
civic mirage
Lukamatico did review on it
I believe its improved pretty decently
Not as good as other filters but I believe Luke said for the price it may be compelling
brittle merlin
imagine making this with Rokis
Jwst looking ahh
mystic loom
https://telescopes.net/idas-nbz-nebula-booster-filter-48mm.html re filters, just saying — NBZ (the more versatile one f/2 and slower) only $240, why not go with that?
mystic loom
what do we think about these stars wide open?
this is 300s with NBZ at f2.2 in the vicinity of heart nebula
worth trying a session shot completely wide open or does it look like I'm running any risks?
(I always reshoot my stars in RGB at 4 or 5.6, just about risks to nonstellar)
this is with back focus dialed in to some 0.02mm variance from what it theoretically should be
worthy grove
what do we think about these stars wide open?
They look bang on to me. You've got your backfocus dialed in there
mystic loom
Decided to gamble and shooting wide open tonight - clouds kept me from starting until 1130 so with how little time I decided why not just keep adding data to sadr for tonight at least
3 will be same as 5 prior when I was shooting at f2.8
Will see what I get tomorrow!
mystic loom
WBPPing just last nights captures to see what they look like by themselves
chilly ingot
Im just gonna do the f/2.7 with stepdown ring
might get away with f2.4 and some extra prosessing when i use 533
mystic loom
hot damn guys
chilly ingot
But im not gonna fool around when its new moon
mystic loom
I think I may be in business at f2.2
they have coma you'd expect but they lift off
chilly ingot
Do a quick dbe on that gradient
chilly ingot
Simple gradient from top to bottom
chilly ingot
Ye
mystic loom
I'm totally doing another night of it tonight at f2
I think no clouds are supposed to be out tonight
this'll wrap the project for sure
18 hours at f2.8, 8 more at f 2.2
f 2.2 is 1.67x the light of 2.8, so figure those 8 hours are like 13
31 hour integration in B7
mystic loom
can't wait to go to a dark site with no gradient
and just boom out a project wide open
hell even b5 will be amazing
chilly ingot
with a narrower filter you get little to no gradient in heavy light pollution. but fast optics are a problem with em
my 4nm for slower optics is absolutely insane
mystic loom
chilly ingot
nice
mystic loom
(2 * 0.9 * ((G - 0.1*R) / 0.917) + 0.5 * ((B - 0.08*R) / 0.498)) / 2.3
civic mirage
This very nice
mystic loom
from somewhere on cloudynights
chilly ingot
`(2 * 0.9 * ((G - 0.1*R) / 0.917) + 0.5 * ((B - 0.08*R) / 0.498)) / 2.3`
have you tryed the new plugin
chilly ingot
mystic loom
does this work with the version of Pixinsight right before the latest?
chilly ingot
for me it does
mystic loom
I am holding off upgrading because apparently there's some bug with NAS drives in the latest
chilly ingot
watch the nebula photos video about it
mystic loom
I keep all my stuff on a 16tb network drive for sanity
chilly ingot
i didnt download the latest pix when the emails started dropping
mystic loom
going to give them a couple months to iron that all out
mystic loom
awesome
chilly ingot
with this instead of pixelmath, you have live preview
mystic loom
this rig just really has me wanting to go out to the phoenix club's B4 site and go shoot a bunch of IFN
chilly ingot
im trying to go out and do just that
but the forecast is so weird i dont know if its clear or not
mystic loom
not in the cards this month with travel and stuff
chilly ingot
i really need to just get everything ready and watch the satellite photos
mystic loom
but i think I'm going to try and block out new moon weekend in october
could probably shoot pleiades too then
the dark site we use is to the east of phoenix, just desert to the east
so could start when m45 is still low-ish
light dome to the west
if anything would encourage me to go home at a reasonable hour, lol
chilly ingot
i saw a 6.5hour stack of some dust from B5
with f5.6 scope.
a f2.8 roki is 4 times faster and B5 to 4 is like 3times more signal
mystic loom
man 6.5 times faster, f2.2 than 5.6
that's nuts
yeah this system is 4.76 times the speed of my telescope
mystic loom
so do you run this script on your debayered image?
like is this before or after channel extraction
chilly ingot
are you opening it from the script menu or something?
its under process -> color calibration -> Narrowband normalization
after you install it
mystic loom
i mis spoke
i mean process
got a very weird color palette when run on my image as it is now
chilly ingot
got a very weird color palette when run on my image as it is now
use mode2
and try lightness options
mystic loom
need to screw around with gradient a bit but this process is a life saver
splitting and recombining is so messy
can't wait to entirely redo my stack with the 8 hrs of f2 i'm about to get
i'm really worried I'm about to keep my other samyang I bought and wait until next year and buy a second mc pro and just binocular my setup
chilly ingot
haha
you know
a imx571 has so much more fov its gonna image more than two 533 rokis side by side
mystic loom
get 24 hour integrations after two nights of shooting
ha good point
but then I have to entirely re assess my lenses for quality at those farther corners
chilly ingot
unless you image at the same point
mystic loom
yeah but farther reach out into the illumination circle
chilly ingot
yeah that
tryed mine with one. its allright. i might get actually good results with this 533 i have on now
mystic loom
it's a thought, is all
the lens I'm NOT using was the cheaper one, I could sit on it and tune it and see if it can match this one's performance
if not I can definitely sell it still, plenty of folks want them
mystic loom
that tool is great
this is a little overworked for just 3 hrs of data but just enjoying playing with it
needless to say I'm not wanting for any detail shooting wide open
my f.28 step down ring had a short life on this camera, lol
chilly ingot
send a quick png ill try what lightroom color denoise would do to that
would it smooth this out
probably the o3 signal is worked abit hard
chilly ingot
yeah its bit too heavy hand on the sliders
what about noisex the blue and green channel some more and then recombine -> play with the tool
but yeah. easy fun colours with the plugin
this was a rough test for me
it felt so easy
mystic loom
Nice that’s amazing
Yeah I’ll be able to be gentler with it when I combine all my data
By then it’ll be a 26 hour, (effectively 31 hour at 2.8 if normalizing for aperture differences) project
Should have enough oiii
mystic loom
ended up collecting another four hours last night of F2 dual narrowband for sadr, to make a total of an additional 7 hours to that project all at F2 instead of 2.8, to call it done -- when I went out before bed i saw pleiades was rising enough and couldn't help myself during a clear new moon 🙂 so shot the rest of the night at 30 second exposures of it, 400 of them 🙃
so all in I will have 25 hours of integration on sadr, the equivalent in at f2.8 of just shy of 30 hours, plus 4 hours on a broadband target, a good new moon all in all
next month looking forward to going out to a B4 site for sure
uneven compass
fallow stirrup
That looks sick you got the extended spiral and ifn
uneven compass
Alright, so have we definitively concluded what the best duo narrowband filter for the roki is?
chilly ingot
Atm its maybe idas nbz but when preshifted altair astro 4nm comes out it takes the throne
Any antlia garbage cant touch it even with a long stick
mystic loom
An Altair preshifted is coming?
I must say I really really love my nbz
Would I enjoy just killing all gradient forever with that 4nm? Yes
But the nbz is spectacular
And again telescopes.net has it cheap (just checked and they’re out of stock, hopefully just temporarily)
https://telescopes.net/idas-nbz-nebula-booster-filter-48mm.html
chilly ingot
An Altair preshifted is coming?
there is no ETA but it is in the works
chilly ingot
Would I enjoy just killing all gradient forever with that 4nm? Yes
there is no gradients what so ever at bortle8 + half moon. its insane
chilly ingot
i can send the stack if you want 😄
mystic loom
Yes do so
Do you use a regular with a regular scope or are you using one with your roki and accepting the band shift?
I suppose my only complaint with idas is their nonstandard thickness which may literally only annoy me in the entire world
chilly ingot
Do you use a regular with a regular scope or are you using one with your roki an...
i use it with my newt and refractor
and my 200mm lens needs to be stopped down to like f4
for fast stuff its the nbz. or maybe for a darksite since it has slightly more transmission i guess
@mystic loom this is unlinked autostretch
uploading stack
mystic loom
Good lord
chilly ingot
also
1hour integration and some wings on m27
bortle8 + half moon
what the hell man
got my camera back today from repair
its 3.76 pixels + 518mm focal lenght
drizzled so divide the pixel size in half
summer apex
2.7h Iris from B4 with gibbous moon last night @f2
chilly ingot
Nice
civic mirage
Dayum
chilly ingot
Stars are giga nice too
Think you need a armed guard for that roki
@mystic loom will come and steal it
for his hoard
mystic loom
lol
this is gorgeous for flat out f2
I'm still getting to know the real limits of my copy
mystic loom
I'm settling in at a very very light tightening -- using a 58mm step up / down ring set with inner diameter at 56mm
chilly ingot
Bortle8
mystic loom
so f/2.4
took this last night, still collecting on it
finally found a corner of my yard that can shoot north
summer apex
Stars are giga nice too
These stars were horribly abused by BlurX, pixel math, and multiple other interventions 😂
shell wasp
took this last night, still collecting on it
nice
mystic loom
Nbz still requires a lot of DBE
shell wasp
what bortle are you in again
summer apex
Yeah the moon really gives a bad Oii gradient with my NBZ
I use sample size 128 pixels with 10 per row and a high tolerance, then subtract. Usually gets most of it.
summer apex
3min sub at m31
That’ll look nice when you stack ‘em!
mystic loom
Will try that much aggression next time for sure
fallow stirrup
Smc @f2
summer apex
Tweaked above Iris pic
civic mirage
Be cause it's f2 instead of f4.5
shell wasp
i don’t understand why something being widefield means it’s bad
civic mirage
Also the sensor you choose determines how wide your field is.
FF would be true 135mm
Aps-c is more so closer to 180-200mm
Sensors like the 585 and 533 bring the fov similar to around 300-350mm
shell wasp
so?
civic mirage
your missing my point
chilly ingot
yeah. thats how focal lenght works
but its about the f stop
imaging at f2.8 instead of f4.5 is quite big difference
its 1 and 1/3 stops of light
it starts ramping up ALOT when you compare integration times
if you image 2hours at f2.8 is the same as like 5hours at 4.5 or something silly
civic mirage
180mm has a smaller fov
smoky salmon
are they talking about aperture or focal length
I guess focal length
Bassicly the bigger the focal length the more zoomed in you are 😑
civic mirage
Wtf that's literally what I was just pointing out
Tbh I don't know what your point was to start with, you were asking why do people like the 135 f2 over the fma 180, but then proceed to disagree with half the things people are saying.
patent dove
roki…
civic mirage
that most definitely was not clarified on the original question.
but yea Roki will be better tbh
"Why the roki would be good
Its so wide
than askar fma180 pro"
This sounded more like an interrogative question, like you were asking why people like the Roki over the 180 pro.
civic mirage
more focal length = smaller fov if your comparing with the same sensor.
chilly ingot
yeah and you didnt understand it
civic mirage
smaller fov means its more zoomed in, which the 180 is.
FOV is usually measured in degrees, the smaller the measurement in degrees is, the more "zoomed" in it is.
chilly ingot
roki
fma180
with canon apsc
this is roki with a imx585
sensor and pixel size matters alot too when choosing optics
if for example someone new to the hobby would slap a 585 to a 60mm f6 refractor
it would sample under 2 arcseconds per pixel and the untuned mounts probably wobble more
also i think the ACL200 F4 is better for the 24mpix canon asp-c camera. slightly faster and forgiving sampling rate. mounts will track with it worry free
ok details for images
shell wasp
cam?
light seal
Stock Canon Rebel T7
light seal
Yeah 12nm clip in filters
Highly recommend as a starting point if anyone has the SWSA 2i
Upgraded now with the RC51 II and the SWSA GTi but that old rig was amazing and perfect for travel
light seal
Great man I love it
Wish I could guide tbh
But it handles the weight of the RC a lot better than the old star tracker did
Its perfect if I were to add a small guide cam+scope and a dedicated cam
shell wasp
it has a lot of backlash for me when guiding
light seal
Fr?
shell wasp
yeah
light seal
Odd
shell wasp
other people have similar complaints but idk
light seal
Only reason I bought it was cuz my old mount fell ontop of itself and broke
Its got a little bit of trail unguided niw
At first it didnt
Might just be the batteries dying inside tho im not too sure
shell wasp
yeah i run it off of external power but idk
light seal
I couldnt even tell you why
mystic loom
i don’t understand why something being widefield means it’s bad
i specifically got it because i felt constrained with my 72ed, I love being this wide without having to throw out my 533 for a $2k OSC, and the speed is a definite plus
I disagree with folks recommending rokis as a beginner lens because they're too annoyingly finicky for beginners and god knows I'd have quit if I started on a roki but when you know how to address tilt and assess the quality of one, it's worth the effort
this is not done yet - still battling a gradient and the background is visibly too red, but starting to take shape
shell wasp
yeah roki was/still is my first scope, I agree with what you’re saying about the quality control but I feel like about 90% of the time they’re at least decent; I rarely see any “bad” ones. But yeah I definitely love being widefield since it’s cheaper, easier, and widefield is honestly just pretty cool sometimes
shell wasp
this is not done yet - still battling a gradient and the background is visibly t...
mmm looks nice
mystic loom
i mean I know I'm horrifically ocd so that's on me probably
shell wasp
is this drizzled?
mystic loom
yeah 2x back down 0.9, then this was saved out at 50%
need to work on the stars a bit, i think with how I had the histogram starx picked up some green noise as stars
shell wasp
yeah, i feel like with our sampling it still feels very soft even when drizzled which is unfortunate
mystic loom
I think a fair amount of the softness is overagressive noise control because I really pushed it trying to fight a gradient
this is before noisex, definitely crisper
mystic loom
7, but with how low heart is in the sky I'd guess I'm shooting through an 8 light dome
really need to take my rig out to b4 or even 5 and just be blown away
i'm only a 35 min drive to B5 but that park at least officially kicks people out at 11pm
so kind of waiting until winter when I can get enough hours in on something to make it worth it
shell wasp
right
idk how i’m going to have ap work during school lol, i get home and i’m just so tired and then i have 4 hours of homework to do usually
mystic loom
as a parent, without the walled garden of zwo 'just works' i literally don't know how I'd do it
NINA drives me insane, i lose like an hour every time fighting with drivers
sometimes it feels like a cheat code using all their stuff but it's the only way
all I need is for zwo to make some kind of flat panel that asiairs support and I'd never have to walk outside again, lol
shell wasp
yeah i need to get one of those scope covers
but i’m worried about spiders and other animals/wind knocking it down
and honestly kind of want to spend money on other things besides astro lol
reMarkable Bundle 2 Notetaking Tablet | Marker Plus |12 Months Connect | 9 Spare Marker Tips | USB-A to C Cable | RM113 https://a.co/d/g28DZAQ
i’ve been thinking about getting this since i take a lot of notes
it’s like a screen but with the pen it has a feeling like you’re writing on paper since the glass is textured
500 bucks basically though
uneven compass
yeah roki was/still is my first scope, I agree with what you’re saying about the...
I first assumed mine wasn't fantastic, but it turns out my narrowband filter is just screwing with backfocus a little but
When using my uvir, I get round stars and pretty insignificant tilt
I really love the roki, it's been such a killer lens
uneven compass
i specifically got it because i felt constrained with my 72ed, I love being this...
Tbf, you put a lot more work into perfecting yours then a beginner would need to
mystic loom
Yeah that’s real
uneven compass
Assuming you get a half decent copy, I still think it is probably one of the best lenses/scopes to start off with
mystic loom
And especially if you’re not as light polluted as I am, you can afford to stop down
uneven compass
Excuse my typos, it's late lol
Oh absolutely
I never stop down unless I do stars. I just only do broadband from dark sites
mystic loom
yeah I'm starting to think that's my strategy too, not even bothering with BB from Phx proper
mystic loom
reMarkable Bundle 2 Notetaking Tablet | Marker Plus |12 Months Connect | 9 Spare...
was at a conference last week and saw someone toting one of these around, looked decent
shell wasp
was at a conference last week and saw someone toting one of these around, looked...
i need to write on one and see how it feels
many of the reviews say the texture is indescribable
mystic loom
can also just get an ipad and one of the textured protectors for it
shell wasp
but i’d love something like that so that i can take good notes and save them easily since college classes are note heavy
mystic loom
despite working in IT/data science still prefer paper because i'm old lol
shell wasp
can also just get an ipad and one of the textured protectors for it
hmm maybe, i’ve heard people say it’s just not the same
mystic loom
but the remarkable is nice in being devoid of extra distractions
shell wasp
despite working in IT/data science still prefer paper because i'm old lol
I really like the feel of pen/pencil on paper, i own multiple fountain pens
shell wasp
but the remarkable is nice in being devoid of extra distractions
yeah
mystic loom
the distractions were what got me
shell wasp
and i want to be like easily able to access my notes
mystic loom
a moleskine doesn't have web search to drag you away from what you meant to get done
shell wasp
yeah exactly
i don’t really get distracted in class but that’s just another plus
500 for it is definitely overpriced but
mystic loom
~premium~
shell wasp
i mean it is and it feels really nice, but there’s no way it’s 150 bucks
civic mirage
Look some more, you'll find some fantastic images... el em si, Dadillo, Caphe, stench, ryderdavid all have gotten great performance out of the 135.
The 180 pro is not bad by any means, but it doesn't collect light as fast. The difference in fov is not huge at all, and tbh you'd have a better time with that fast light collection than a much slower lens with a tiny bit more reach.
mystic loom
Look some more, you'll find some fantastic images... el em si, Dadillo, Caphe, s...
Shucks
chilly ingot
Look some more, you'll find some fantastic images... el em si, Dadillo, Caphe, s...
My pics sucks. Havent had a good chance to image 
Now that my lens is fixed
did that one polaris dust pic untracked to test it out
radiant sentinel
It’s complete luck buying a new one, but if you buy second hand from an astro person you can ask for example images
Order it when clear skies are forecast. This is one of the few times I’d suggest ordering from Amazon lol, next day delivery so the forecast probably won’t change and hassle free returns too
It really isn’t as bad as it seems
Just send it back, easy
I know ordering from an astro store is better, but if you can order through Amazon you’ll get quick and easy delivery and returns if necessary. So you’ll be unlikely to be waiting long to rest it, and won’t be waiting long to get a new copy if you get a bad one
Ah fair enough, that’s quick tbf
I’d just order it when the forecast is looking good tbh. You don’t need perfectly clear skies to test it either, just a quick shot of the stars at various focal ratios
Indeed, but there’s nothing else like the roki really. There’s things which will perform well, but nothing that has good performance and F2. It’s worth getting a good copy on one
chilly ingot
If you get a bad roki, you need to send it to sweden to the warranty repair place. Needs to have a clear and reproducable problem with it
Also its only cleared as ”warranty” when they try it. So you need to pay for shipping
if its not, there is a fee
Sucks
radiant sentinel
Also its only cleared as ”warranty” when they try it. So you need to pay for shi...
That is a pain
It’s quality control, or rather a lack of it
chilly ingot
Its the same lens. Just quality control
Not really
The depth of field is so narrow to test corners
radiant sentinel
Samyang don’t do much quality control on the lenses (this is probably why they sell cheaper than other ones) so the focus hard stop can be in a slightly different place between lenses and the optical performance will vary between lens copies
chilly ingot
photographers never notice bad corners, they just foam over bokeh
you can aim at polaris and do like 10 - 15sec exposure
15 might be pushing it with field rotation. 10s should be better
radiant sentinel
Generally though, it’s cheap for what it is. It’s much more expensive to buy another brand’s lens with similar specs
The 135mm definitely also has quality control issues, I had to send back my first copy so I can confirm it from experience
I wouldn’t overthink them though, it’s just important to know what you’re buying. You could very well end up with a good copy the first time, many people do
chilly ingot
Check photonordic
My 135 had internal tilt. Warranty repair center replaced the front element
radiant sentinel
Surely in that case the front element would be defective so it would be free to repair under warranty?
All you can do is order one and see. As I said earlier, I wouldn’t stress about it as you might just get a good copy straight away
chilly ingot
I think a fast camera lens is not a great first AP optic for everyone
Needs a special kind of nerd
Ok lets say. A fast telephoto
A simple 60mm doublet refractor is more straight forward to use
its a telescope 
Higher chance of getting some CA with camera lenses though
depends how good glass they use.
I know a great solution
Get the fma180pro
And dont forget the canon t-ring
good bye 
solid raptor
@gusty rock What mount do you want?
Camera mount on tje samyang
We're talking about the samyang here aren't we?
civic mirage
He's using Canon EF
solid raptor
Alright
civic mirage
I'd take the ACL200 tbh, 200mm is I bit more versatile.
A little faster than the 180 as well
But with more reach than the 135
Yea, should work just as well as the 135.
It's chunkier, but believe me it's wayyy lighter than a 60mm frac.
It's def not the heaviest lens either
There are lenses much heavier than it.
It's no problem for your GTI
Yii it's designed specifically for astro but should work fine for daytime photography.
Yea astro will cause anyone to realize their poor at some point lol.
patent dove
see if you can get a raw image from the seller if buying used to check star quality
ah okay
light seal
Yeah I'm gonna either mod or upgrade soon
mystic loom
making some progress -- noisier because I had to pull an entire night of shots that for some reason ended up with an internal gradient, rather than fight it forever I'm going to just collect more with how many clear nights I seem to be having right now
this is just 18h integration, yanked out 7.3 hrs and the gradient was easier to clean up
civic mirage
making some progress -- noisier because I had to pull an entire night of shots t...
It looks like you denoised luminance but not color? You may be able to balance the two out and gain back some detail.
mystic loom
i just ran deepsnr on it
I assume it's noisy on the blue channel because I used narrowband normalization which I believe ends up boosting the derived blue channel up to match the red (though I'm a little unclear of how it works) and OIII is obviously weaker
so all that boosted blue ends up looking noisy
(this is my guess)
in practice I've found that with my LP I can't really call a project done until I'm nearing 24 hrs on it, maybe even 30
how do you denoise color though?
patent dove
making some progress -- noisier because I had to pull an entire night of shots t...
"just 18h" 😳
uneven compass
I've got 16 hours on h and s I need to process lol
mystic loom
"just 18h" 😳
B7, B8 light dome 😦
I’m going to be blown away the first time I can escape this light
And or if that Altair pre-shifted 4nm filter ever comes out I’ve heard tell about
shell wasp
I've got 16 hours on h and s I need to process lol
i need to start shooting again lol
brisk yoke
How long would I need to image the heart nebula in bortle 2-3 using Sony a6000 stock and rokinon at 2.8f
civic mirage
Get as much as you can
Minimum of 2hrs for those conditions
Maybe 1hr since your not stopped down a lot.
uneven compass
You have the bortle to your advantage, but it still will be quite hard
I'd honestly go for at least 5 to get a good image. The dark nebulae should pop out nicely
brisk yoke
Ok
mystic loom
found the offending shoot session - sep 25 must have had a bad flat and is why my images were looking bad in a weird way with MORE data after that date:
really need to remember to take flats 2x
i don't have any dust motes so seeing if the prior day's flat works on it
if it works I'm going to re run this set with this day back in (it's a lot of data, 6h 40 min) and I would consider myself done with some 30 hrs
might turn back to running split sessions on sadr and california, 3 hrs on sadr, rest of night on california each night
mystic loom
no dice, this is so weird
what do you all think would have caused this on a single night?
scope literally in same place for a week
so weird
shell wasp
dew?
mystic loom
i severely doubt it
dew point has been solidly 40 degrees below ambient
and it is in every capture from the start of the night to the end equally
and only that night
shell wasp
hmm i agree, only thing i could think of is something going on with flats
patent dove
stray light?
civic mirage
Yea stray light can cause such a concentric ring I'm fairly certain.
mystic loom
Thinking like the moon or a nearby window that wasn’t covered or a floodlight that was on? (I don’t know of any, just grabbing at straws)
This is a new spot in my yard I have been experimenting with
So not super used to the lighting
Makes me think that it was probably a man made light, maybe I forgot to pull the blinds to my office that night
Since I’ve shot basically entirely around the moon and no other nights show it
mystic loom
I think this buster might finally be done
mystic loom
24.5 hours after reshooting one night and throwing out that night of 7 hours of that stray light
Ready for another shoot. I’m trying to squeeze in NA nebula before it’s gone for the year
Going to chip away at it four hours at a time each night for a while
I have a plan that does it and then swings over to California nebula for the remainder of the night to just keep@at that one as a freebie
shell wasp
I think this buster might finally be done
coming along nicely
gleaming flare
I think this buster might finally be done
nice process
the colors make it feel like a dream
gives that feeling
mystic loom
Thanks gang
Just need to figure out how to reduce the color noise in the bg when I go HOO
Lots of blue flecks
shell wasp
chrominance acdnr usually works well for that
chilly ingot
Taking the roki out for a change
Can confirm the backfocus is bad
Within 0.03mm and its flaring towards middle
2min sub
chilly ingot
that moon is killing you
Yep should have gone with the 200mm and 4nm filter
shell wasp
yeah
chilly ingot
Or newt. Seeing is exellent
shell wasp
yeah backfocus sucks for me too idk why
chilly ingot
Next time ill go with the 4nm and z61 or newr
Rly cba with bad stars again
My stars looked amazing with the 1mm thick baader filter in
shell wasp
how are you attaching your filter
chilly ingot
Drawer
Keeping a extra slider with me to PA, slew and frame with some uv/ir cut or broadband filter
Muchos faster
light seal
2min sub
Keep shooting man trust
That framing is perfect for the 135 this is what I got in two panos
Dont look at the stitching
gusty rock
Is there a cheap way to attach Sammy to a ZWO camera? (Nikon F mount)
hazy copper
well, its AP accessory taxed but i use the ZWO nikon F to M42 filter drawer. its great.
i recommend getting the filter draw one
patent dove
I think that may be the only option for the Nikon version too
since the M48 bayonet that some of us use is for canon mounts
chilly ingot
Yep and the drawer is great
worthy grove
Got a nice halo or reflection to deal with
This is execellent (if you can fix the reflection). What camera was used with the Roki to get this?
chilly ingot
This is execellent (if you can fix the reflection). What camera was used with th...
2600
Really big pics
worthy grove
Some strange artefacts with the stars too?
hazy copper
2600 <:awkward:1151872712290086943>
How hard is getting good enough stars on that?
chilly ingot
Yeah its backfocus and something else idk
chilly ingot
How hard is getting good enough stars on that?
With long subs they flare more and more.
hazy copper
I know for a fact my Roki can get good enough stars on full frame with 6 micron pixels. Now with the 533 I seem to get similar stars because backfocus is off.
chilly ingot
Gonna click it down with the blades next
hazy copper
I want a canon mount Roki ngl.
chilly ingot
Or flock the aperture mask
worthy grove
I actually like the effect of the blades on the bright stars with the roki tbh
hazy copper
So I can do the screw mod
@fallow stirrup I might wish to purchase your Roki. Seeing as you hate it so much.
fallow stirrup
<@708641320763260929> I might wish to purchase your Roki. Seeing as you hate it ...
What
Why would I hate it if it’s the only lens I use for dso
Stench said he hates his roki
hazy copper
You’ve said a lot of times you hate the wideness of it
fallow stirrup
You’ve said a lot of times you hate the wideness of it
Yes and I stopped
For the greater good
hazy copper
Stench said he hates his roki
He doesn’t hate his Roki. He hates his F2 Roki.
hazy copper
No backfocus with any F2 system is an absolute nightmare
fallow stirrup
I stopped saying I hated my roki a while ago
Once I finally got images I could accept as decent I stopped
worthy grove
No backfocus with any F2 system is an absolute nightmare
Hmmm and does bigger pixels make it even harder?
hazy copper
It makes it easier
Hides imperfections
Can’t decide what I want to buy next. 571 mono or a big mount, at or above EQ8 tier for my dob.
In the future I want something like a 120mm esprit
fallow stirrup
<@708641320763260929> I might wish to purchase your Roki. Seeing as you hate it ...
For now prob not but if your willing to wait some time if I get something better I could prob sell it for a fair price
Rn my roki is like my only decent lens i can use for ap
fallow stirrup
Oh
hazy copper
But you have a very nice copy. So I am tempted
fallow stirrup
I thought you were kinda serious as I haven’t mentioned my hating ever since I learnt to spent more then 1 night on a target
hazy copper
I just want mono at F2 
chilly ingot
Can’t decide what I want to buy next. 571 mono or a big mount, at or above EQ8 t...
571 is a insane sensor goddamn
it has zero imperfections
chilly ingot
Not hard at all with a real scope
But at f2 - 2.8 idk. Atleast tilt adjust. The aliexpress shim kit is god tier though
Etched the sizing on em
patent dove
Can’t decide what I want to buy next. 571 mono or a big mount, at or above EQ8 t...
I think I might get the 571 color from the meow discord since I could probably sell it for close to what I bought it for in a year or two since it’s so much cheaper there
and then go mono
chilly ingot
Tempted to sell some lenses and get a acl200
ill image with the canon stopped to 3.6 - 4 and see if i can shim, blurx and massage the data
as a bonus i can use a tighter bandpass with it
The 12nm was kinda meh with giga moon + light pollution
patent dove
yeah use your altair 
chilly ingot
its so good for my bortle. Ill just use the roki for darksite broadband
Cam is uv/ir cut stock so no shimming for that
chilly ingot
sure as shit better designed to focus at infinity
and more emphasis on getting fully corrected flat field
chilly ingot
its small
its just not as fast collecting data
but for my light pollution i can use a really narrow filter with it
that might help alot compared to extra speed
idk. you will end up spending more money on the roki than acl
for the acl you only really need a t-ring and for the roki you need mounting rings
you want to be able to rotate the lens for framing the target
the acl has a rotator
also a rail for a guider
just polar align really really well and you can do allright unguided
looking at it now. should i grab it 
kek
gonna ask from nokk how much from china
what you really should do is decide what kind of pictures you want to take
and what sort of scope it needs
download stellarium and add a bunch of scopes in
i got bunch of camera lenses, scopes like z61, 80mm f6 triplet, 400mm lens, 6" newt, sct's
and such
added theyr redurcers too and a bunch of cameras
it can be good, but you are screwed if its not. best roki is second hand with sample pics
sample variation. some are made better than others
i had to send mine to sweden to the official repair place for warranty. its still not amazing
if you buy something for actual astro use and it gives bad stars or has CA
you can return it
for a photography lens they probably dont care
ye well. usually its so minor its not visible even when saturated
its not that simple
i have a APO scope. its a doublet with FPL53 glass
has some CA but its super minor
one pixel wide at the top and one pixel wide at the bottom of stars. top can be blue and bottom something else
basicly no ca for me.
a 2nd hand redcat would suit the sw gti u got too
petzval, super sharp, rotator, dovetail, finder backet
actually pretty damn light
thats why a 2nd hand. im not gonna pay the RRP for one of those
WO stuff is too expensive in the EU
chilly ingot
@worthy grove looking better with a bunch of better calibration data and restacked
civic mirage
<@835584278074490921> looking better with a bunch of better calibration data and...
thats nice
chilly ingot
thats nice
gonna leave it like this if i dont image more
light seal
Think 2 minutes
mystic loom
25 hours, finally got rid of the gradient
love the OIII showing up, but not sure I love how magenta NarrowbandNormalization makes the red
summer apex
Added f/5.6 stars to my f/2 m31 (45 mins) and Iris
Roki is nice and sharp stopped down
chilly ingot
My idiocy knows no bounds
Bought a Nikon 180mm f2.8 ED for cheap
probably amazing or a total waste of money
Its the autofocus version before they swapped to plastics
So good optics and metal housing
🙏please be decent
civic mirage
Bought a Nikon 180mm f2.8 ED for cheap
Gotta be pretty good at f3.5 at least.
chilly ingot
Gotta be pretty good at f3.5 at least.
ye well it was half price what they were listed elsewhere. and those were plastic body ones
it has a dented filter thread but i got a tool to fix it
chilly ingot
Gotta be pretty good at f3.5 at least.
mm in theory it should be a lens to shoot stars stopped down and wide open the rest
it has some CA but stopping down reduces star sizes and easy defringe click in lightroom
highly regarded lens what i read about it
civic mirage
Mostly purple fringe?
chilly ingot
purple yea
i could just do the whole deal wide open and process the star layer separate
civic mirage
Do "invert" - "SCNR" - "invert" again
chilly ingot
yeah i know that trick
civic mirage
Better results than Lightrooms dodgy CA remover
chilly ingot
there is slightly more involved sncr combo to process dual narrowband stars too to look more pleasant colour
cant remember it. but it made the red fringing stars orange and the green ones more blue i think
civic mirage
there is slightly more involved sncr combo to process dual narrowband stars too ...
You know calibration in Lightroom?
Or Camera RAW
chilly ingot
i only have lightroom
civic mirage
Either one
Ahh
Yea Lightroom will work I think
Using red primary and shifting it to the right will correct duoband stars.
chilly ingot
the lightroom defringe is allright. i just do the unscreened stars there and open it back up in pix to screen back
civic mirage
May take two passes, and a bit of magenta added.
chilly ingot
Using red primary and shifting it to the right will correct duoband stars.
ill try that sometime
gonna try shoot some broadband since its new moon
hope i get some clear
its gonna be a absolute mess at my bortle though
civic mirage
Supposed to be clear tn
Gotta get darks for like two nights ago
And more soul data for my heart and soul mosaic
chilly ingot
cant you fit that in one go
chilly ingot
i kinda want to zoom in the middle of heart neb with my newt
civic mirage
Melotte 15 is sick
chilly ingot
yea
dual nb that one
need to go grab some distilled water
i had some organic debree drop in my primary and i had to wash it
something from a tree or plant
civic mirage
Best I could get at 360mm
chilly ingot
just soap, alcohol and tap water treatment now. need to get the water stains off with distilled water
lemme check my newt framing
chilly ingot
all this at 1.5"/px sampling
IMX533 is tragic sometimes
but it would do the job
civic mirage
Yii, especially coming from my DSLR along with it's 5.2 um pixels
mystic loom
this is on a roki/533 pair? what is your camera, and what was your orientation angle?
summer apex
this is on a roki/533 pair? what is your camera, and what was your orientation a...
Roki/183mc color - angle was like 180 degrees in Nina (camera was horizontal at zero position on my mount)
Just got an imx571 secondhand so 183 may not be used much anymore 😉
summer apex
Do you focus manually? Or do you use an EAF?
EAF
chilly ingot
Just got an imx571 secondhand so 183 may not be used much anymore 😉
imx571 so good. might need to do some fiddling with the z61 if you have the reducer
desert python
EAF
I figured, manual focus would be difficult to get that good. What EAF you suggest?
chilly ingot
i found that mine started to show some weirdness in the corners. might be my cam too, suspecting its not 17.5mm backfocus in the cam
more like 16.5 or 17
summer apex
I figured, manual focus would be difficult to get that good. What EAF you sugges...
I have the standard ZWO one - I use a BlackCAT adapter with my redcat ring
summer apex
imx571 so good. might need to do some fiddling with the z61 if you have the redu...
I have a redcat - no reducer for me 🙂 - I do expect some wonky stars in the corners though.
Redcat and Roki
And an AT6RC
chilly ingot
i think the fullframe corrected stuff is better with aps-c
the redcat probably decent
the fast lens might need massaging in full moon nights to get it sorted
summer apex
Yup
summer apex
Could definitely use some more integration
I have the unfortunate habit of getting tired of targets before I get enough integration time on them
May try again with Shinpah’s IMX571 😉
Tired of the 183mc mottling
chilly ingot
I have the unfortunate habit of getting tired of targets before I get enough int...
same
chilly ingot
@hazy copper supporting the camera with its own ring seems goated
Start printing son
hazy copper
I’ve definitely thought about this
The bayonet has a bit of wobble
However I don’t have much noticeable tilt, just coma. Need to try shimming.
chilly ingot
I have a mild side to side tilt that only affects like 2pixels in the CA
The tilt also visible in the vignetting
hazy copper
I wonder how effective looking at the vignette is for analysing tilt.
It should give a rough idea
chilly ingot
Ye well ill show a example when im home
cosmic marlin
What’s this thing ?
chilly ingot
What’s this thing ?
ASTAP and using image inspection
its okay for big problems in backfocus or tilt
Small ones not really
cosmic marlin
Hm might give it a go
pine beacon
helo
short charm
Oh yeah it is
summer apex
The roki is an absolute broadband machine
You getting these from Rock Thrill or driving out?
summer apex
Just ~50 minutes away
Excellent… what Bortle is that? My usual astronomy field 1h away is B4 but the “good” one is B3
uneven compass
B4 as well!
pine beacon
Current WIPs
How long is the exposure time of both?
uneven compass
Just to stop this from dying
civic mirage
Lol I would love to pair the 1600mm with a Roki, highspeed mono setups go crazy.
chilly ingot
Found a Roki on CN for like 380
Is it @mystic loom
civic mirage
Could lmao
winter herald
guys are rokis worth it ? i wanna get one to use with my guiding , L enhance and uranus c pro , but i’m getting told i could get a bad copy
solid raptor
guys are rokis worth it ? i wanna get one to use with my guiding , L enhance and...
Either you get it used by someone that has a good copy or you do it the @mystic loom way and try until you get a good copy amd return the rest
winter herald
Either you get it used by someone that has a good copy or you do it the <@104002...
yeah i ordered one when i was getting my fjrst rig , couldn’t test it tracked but got told it was a bad copy and returned my roki for a zs61 lol
radiant sentinel
guys are rokis worth it ? i wanna get one to use with my guiding , L enhance and...
100% worth it IMO, but if you're not okay returning a copy or two then it's probably not for you
winter herald
100% worth it IMO, but if you're not okay returning a copy or two then it's prob...
yeah i’d like to get one
radiant sentinel
yeah i’d like to get one
tbh maybe just wait for a second hand one to come up and ask for test shots at f2.8 or faster
winter herald
tbh maybe just wait for a second hand one to come up and ask for test shots at f...
yeah
hazy copper
2.5H
solid raptor
This target seems to have been in all of our minds this season it seems xD
I'm gonna try a little mosaic around meissa this year, if the weather permits it
worthy grove
2.5H
Wow this is superb! I still remember your orion shot from last year.. it was epic. You using the 533 for this?
uneven heart
winter herald
if i were to get a roki and use it with a uranus c pro , could i get any lense ? eg a canon or nikon one ?
i really wanna get one , the images you guys produce are amazing , but i already have a zs61 but my camera has too big of a crop to do widefield nebulae
radiant sentinel
if i were to get a roki and use it with a uranus c pro , could i get any lense ?...
as long as you buy the correct adapter you can
one for the correct lens mounting
winter herald
oh okay thankyou , i can email flo
hazy copper
Wow this is superb! I still remember your orion shot from last year.. it was ep...
Correct. I’ll be reshooting most of this stuff this year.
velvet sand
I am the recent owner of the samyang 135 and had first light a couple of nights ago! The night itself wasnt meant to be clear and im pretty sure there might have been high clouds when imaging.
The andromeda and pleiades are both 30 minute stacks made of 30" exposures with an asi224mc. The other is a 1 hour stack on the heart nebula. To me it looks like its not at critical focus but I was really trying to get the star as small as possible when focusing. Is backfocus still an issue if you can go past the focus point? My other thoughts is that dew might have formed on the lens but the stars seem the same from the first exposure to the last, or the high clouds caused the bloat. The last thing I can think of is to use a uv/ir cut filter to reduce star bloat?
Normally I would troubleshoot these things myself but as the weather here in Ireland is so cloudy all the time I figured I may as well ask some people who may be able to solve this before my next imaging session.
radiant sentinel
I am the recent owner of the samyang 135 and had first light a couple of nights ...
you need a uv/ir cut filter
that should sort out your star bloating 😄
velvet sand
Yeah, was hoping that wasnt going to be the solution 😦
hazy copper
They are $10
velvet sand
wait, like the svbony ones? When I was researching all I saw people recommend were the Astronomk L1,2,3 which are like $150
radiant sentinel
the SV bony one works absolutely fine yeah
i have one, it doesn't produce halos or anything
velvet sand
Nice, thats a relief 😄
solid raptor
I think that depends on where you insert it in your image train
hazy copper
Nice, thats a relief 😄
The zwo one is slightly better, I’ve had both. The SVbony is specced better, however is clearly worse when doing a comparison. The SVbony advertises a higher transmission percentage but the zwo is visibly clearer. Yet to compare both to my optolong uvir.
vapid grove
Ok, stupid question. But how do you know if you got a bad one? The optics aren't right?
radiant sentinel
Ok, stupid question. But how do you know if you got a bad one? The optics aren't...
There are various issues that can come up. Some won’t reach infinity focus because there’s a hard lock on the focuser, some have coma/bad stars in the corners (particularly at fast f-ratios) and some have chromatic aberration. You can’t really know about those without testing it in the field, and sometimes the issues can occur with different severity between copies
Any optical issues should be apparent in your images, or can be seen using something like the aberration inspector in Pix
vapid grove
Is this a good one then? Sorry, I'm new to all of this. And didn't see anything noticeable. It's two 3minute subs and 1 dark frame.
hazy copper
Is this a good one then? Sorry, I'm new to all of this. And didn't see anything ...
Bit of tilt top left, very slight purple CA but hard to tell with this weird compressed image.
7/10 copy.
vapid grove
Well crap. I got it from B & H too. Damnit.
hazy copper
whats wrong with it? i can barely tell from your image......
its a good one
velvet lark
Does anyone here who uses digicam control know what causes the temp error
That’s what it looks like
summer kernel
Is this the right thing?
uneven compass
Yep!
winter herald
Is this the right thing?
yes , this sounds stupid but make sure you get it for your camera , i got one before and nearly ordered it for the wrong camera
i sent it back tho as i wanted a scope
summer kernel
I trust B&H for quality, but I'll test it still
How do I know if the stars are good though? I currently have absolutely horrid star comas so I have no reference as either way this lens will be much better (my star comas can be 3x as big as the star)
chilly ingot
I trust B&H for quality, but I'll test it still
B&H has nothing to do with korean lens quality assurance methods
What you can do is check the return policy for b&h
A fast f2 lens can have a bunch of camera tilt and backfocus stuff to sort out though to get really good performance
Modern sensors and pinpoint light sources take no prisoners
summer kernel
B&H has nothing to do with korean lens quality assurance methods
Oh yeah my bad
Will do
chilly ingot
Oh yeah my bad
Atleast in europe if you buy online there is minium 14days and the seller can offer more return time. If you walk into a shop and buy something over the counter, zero returns
civic mirage
Is this the right thing?
Do consider finding one used on cloudy nights as you could likely get a couple subs from the seller showing the real world star performance.
I saw one on CN for 380 USD.
chilly ingot
Thats is indeed the best solution
summer kernel
Testing time
shell wasp
summer kernel
What cam you using with that?
Rebel T7
I'm testing with Heart and Soul + dual narrowband + double Perseus cluster
civic mirage
I feel like I see a ton of people using the T7 with Rokis
Must be a fairly popular DSLR
uneven compass
Is the T7 modded?
summer kernel
I want to get it HAlpha modded, it is not currently
uneven compass
Let me know when you get it modded/buy an astrocam...
...for no particular reason
summer kernel
Here's the F/2 top right corner, is this good? (For Roki)
I don't know if focus is perfect
No batinov
uneven compass
Bad compression... doesn't look awful for f2
shell wasp
hard to tell but it looks ok
uneven compass
Focus may be a tad off
shell wasp
split the channels and see if all channels are sharp
shell wasp
that's coma but is normal at f2
summer kernel
There is coma
Yeah
Do you want to see my old corners?
They're uhh
I'll just show them
shell wasp
my field in a corner of a 20m sub
uneven compass
Compression is very bad yeah
shell wasp
this is juicy tho
uneven compass
this is juicy tho
Are you imaging rn?
summer kernel
Is this a normal sub?
This was my other lens
Not Roki
That's what I had to deal with
uneven compass
Oh lmao, good
summer kernel
The tails are 5x as big as the stars lol
Also the Roki middle has perfect circles for me
uneven compass
It's hard to see anything star shape wise with that compression
summer kernel
iso -1
shell wasp
20m at f2?
yes
hazy copper
Jpeg moment
Please don’t actually shoot in jpg
grave marten
Some of my fave Rock'n On 135 captures of 2023. 🦾 🦾 🦾
fallow stirrup
Some of my fave Rock'n On 135 captures of 2023. 🦾 🦾 🦾
Polaris ifn looks sick
open swift
very nice
summer kernel
Is there a bahtinov mask template for the Roki? Like a paper cutout or is there a 3d print file?
uneven compass
There are some on thingiverse, I printed mine
winter herald
Some of my fave Rock'n On 135 captures of 2023. 🦾 🦾 🦾
outstanding
beautiful
mind blowing
mesmerising
sexy
astonishing
winter herald
Some of my fave Rock'n On 135 captures of 2023. 🦾 🦾 🦾
these photos will get 10 likes on tiktok or any social media platforms
but these get 50k
but all jokes aside , beautiful images
shell wasp
I expect nothing more from TikTok lol