Planetary Imaging

[low oar]

Surprisingly good color for a single shot

[quick cairn]

Awesome

[low oar]

My full moons this year

Had to screenshot cuz file was too big

[main flume]

did i cook?

or did i burn

[elder venture]

first proper saturn

[silent mesa]

Moon 97% illumination

[sand umbra]

@low oar try Ina

Blue lake

Got it with my 4.5” once under really good seeing

Really challenging target, it needs to be the right moon phase to get the texture n stuff, good seeing at the same time, and the location is fairly easy

[low oar]

I have before

[sand umbra]

Any luck?

[low oar]

I just need better seeing

[sand umbra]

Not bad

[low oar]

Not good compared to what I can do

[quick cairn]

Really decent, can sharpen a bit more

[low oar]

This was ina in my super moon last month

[teal sandal]

has anybody here tried getting Ceres's disc?

[elder venture]

Nope

It’s sharpened to as much as it can

Seeing was poor and I didn’t get much good frames so the noise which gets sharpened as a result destroys the image

[main flume]

where nina?

do yous think i spaghet it?

[rain mauve]

cold moon

15 panel mosaic

seeing was ok

[main flume]

w h i t e

[rain mauve]

white yea

[sand umbra]

@somber stratus I swear he has some detail or very very close to it

[ruby compass]

I pretty sure someone got it years ago in this server

Oh yeah both @thick heron and @flint siren have

[quick cairn]

No, he got Vesta

[ruby compass]

It was Ethans one that I was thinking of

[digital steppe]

yoships got it

[quick cairn]

Oiooo I wanna see

[ruby compass]

Nope

[quick cairn]

Uhm. Yes dude

He didn’t post on Instagram then hh

But he also got Vesta

[quick cairn]

Both right

[ruby compass]

Ye thats tom

[quick cairn]

Yes I said tom

[ruby compass]

Oh

Thought u said Ethan

[quick cairn]

Haha no no

[ruby compass]

Ye ik tom got vesta

[quick cairn]

Yuhh

Neither of us said anything you said someone I assume tom

[ruby compass]

Real all of this

[quick cairn]

I responded to the first one the exact same time you sent the second haha

[ruby compass]

Oh lmao

Okay

[quick cairn]

No it was 2 mins apart

Idek dawg 😭

[ruby compass]

😭

[rain mauve]

i dont know, is this the ina Region?

oh wow, i did notice i just got the blue lake, i kind of need barlow but its something xD

its veryy small

nevermind i cannot see it

[flint siren]

It is there.

[sand umbra]

It’s upside down aussy style but it’s center of the image

[olive saddle]

this might be a dumb question, but say theoretically you had a massive Newtonian, something enormous like 30" in aperture, and you also had absolutely perfect seeing conditions, with basically no atmospheric disturbances.

How would the Ina crater look through the eyepiece? Would it actually look noticeably blue, or would it mostly just look washed out and grey, blending in with the surrounding rock?

[kind orchid]

Quick shot with canon r5 mkii, 400mm f4 DO mkii, 2x teleconverter. ISO 200, 1/1600, f8

[quick cairn]

Blue lol

Here is the thing

It would look blue with a 6” telescope with no atmosphere

[woven kite]

tonights jupiter, image looks monochrome because registax ruined it with an auto stretch, but i have a solution im going to apply next time

[rain mauve]

I see

Alright time to Barlow xD

[olive saddle]

Oh wow, a 6" can actually resolve something that small?

that's kinda nuts

[summer pebble]

updated my best of the system

[marsh elbow]

what telescope

[summer pebble]

The classic c6

[marsh elbow]

Nice

[summer pebble]

(Lunt 40 for the Sun)

[marsh elbow]

Didnt know you can get that much detail of the planets with only a c6

probably because im a newbie

[summer pebble]

Pretty surprised myself too when I first got those images

[marsh elbow]

im gonna get a 8 inch telescope, and i thought you were using like a 8 inch telescope aswell, but no

pretty good!

[sand umbra]

Holy shit, C6 for all of this? Awesome stuff

[woven kite]

im still losing color by the edges uugggg ;d;';dsf;l;';'';;';'

[digital steppe]

@somber stratus sorry to ping you, but can you shoot the tadpole galaxy when you get the chance

[sand umbra]

still pretty good

btw will image when i get the chance hopefully

[ruby compass]

Is it possible to get other stars while imaging the sun? Like lets say the sun is next too sirius or smt

Is it possible to get sirius with anough data?

[low oar]

Does Sirius light up the whole sky when it’s out?

[flint siren]

No

You can barely get Venus so no way for a star.

[quick cairn]

Is it possible for a planet farther from the sun than earth to go in front of the sun from our perspective?

[flint siren]

No ??

[native plume]

yes
*IF the orbit of the outer planets shifted inwards into the inner solarsystem infront of earth or if the earth's orbit gets thrown further into the outher solar system out by some magical unknown force

[flint siren]

useless comment

[quick cairn]

Thought so

[digital steppe]

https://tenor.com/view/american-dad-wasting-my-time-long-story-gif-8833480245409944009

same vibe

[ruby compass]

What if like 100 hours of data tho?

[digital steppe]

would need crazy dynamic range

[quick cairn]

How would the sun stay the same place that long dawg

[flint siren]

It's not a question of data

[ruby compass]

Yes

[flint siren]

'How do you feel ?' : yes

[elder venture]

https://tenor.com/view/pourquoi-mrbean-what-gif-9716871966585828415

[rain mauve]

really decent saturn today, got an ok seeing

[rain mauve]

jupiter and ganymede

[loud ledge]

No they can only go behind the sun

[white prawn]

It's upside-down.

I have to stand on my head to see it

Joking aside, are you using a 5 or 6" telescope?

[rain mauve]

4.5 inch, homemade diy telescope

[white prawn]

Sweet.

[rain mauve]

Thanks!

[main flume]

woaw

fractor?

or noot

[rain mauve]

Reflector

[fading plume]

While imaging the sun no, the glare is too intense.
If the stars are away from the sun it’s very possible and quite easy.

Here’s some daytime stars. Sirius, Canopus and Rigel.

[ruby compass]

Ye

[craggy wasp]

best i could do untracked w a dob

[rain mauve]

jupiter with phone, could be better, need more vids duration

[quick cairn]

For phone that’s amazing

[buoyant belfry]

wut about me

[buoyant belfry]

also what scope and eyepeice did u use?

[rain mauve]

Thank you

[rain mauve]

I use 4mm eyepiece with DIY hadley telescope

114mm aperture

[buoyant belfry]

ohh its amazing just take longer vids like 1-2 mins

[rain mauve]

Yepp, kinda new to the dob mount, need get used to it xD

[quick cairn]

Hey @somber stratus I was wondering why seeing was so bad 3 nights in a row and I decided to check colomation for myself, they said they colimated it often…. I doubt how often do you?

I’m going to speak with them about it because there are big bolts to adjust it and I don’t wanna mess with it without knowing what I’m doing

[somber stratus]

Is that looking down the focuser?

Or OTA

looks bad either way

[quick cairn]

Yes

Down the focuses, using Hotech laser

Focus as far back as it can go

Do you get yours pretty much perfect?

[quick cairn]

Oh mb no the laser is in the focus or but I’m looking OTA

[rain mauve]

Astrosurface for planetary or registax

[quick cairn]

Both

Personally astrosurface though

[main flume]

laser collimators are kinda meh imo

[quick cairn]

It’s a Hotech

Very trusted brand, was like 170$

Also I use it on my 10” every day and it always gets it near perfect

[main flume]

and?

[quick cairn]

^^

If the laser gets uncolimated they send you a new one free

[main flume]

buh

[quick cairn]

You are free to feel however you like but i know it works well for me 🤷‍♂️

One of those masks would work better but it’s much more difficult with a 15 foot long scope….

That you need a giant ladder to see through

Not to mention purchase a mask that’s over 24” in diameter haha

[main flume]

the only issue is that it only works for noots

[quick cairn]

I mean that’s the point is it not?

You could make an argument that a mask is better because it works on multiple kinds of scopes, but that doesn’t degrade the quality of the item itself

On a particular kind

But on the flipside masks are a lot harder to use on big Newtonians

Because the exit pupil is on top of the scope, not the bottom

[rain mauve]

Alright thanks!

[quick cairn]

Really good dude

[rain mauve]

Thanks!

[quick cairn]

Awesome

[white prawn]

I'm beside myself. On the one hand, I want to reprocess the best Jupiter images I captured. On the other hand it takes time and effort that I don't feel like investing rn.

[silent mesa]

If I get a new telescope should I get an sct or dob

[white prawn]

[silent mesa]

But why

[rugged knoll]

more aperture per dollar

[white prawn]

Best deal as far as aperture for dollar. Simple and elegant design, pretty straightforward. Central obstruction is smaller percentage compared to SCT of similar size, so more light gathering capability for the size. Example, I asked a while back if I should have bought a C8; I already have an 8" Newtonian, and was told that my Newt was actually better than the SCT (at least for my purposes).

The fact that it has fewer components also means less weight, and less things to go wrong.

[silent mesa]

Are there any benefits scts have over dobs or not really

[white prawn]

The extra lenses and stuff they have are present to correct some things that happen in a Newt because of how mirrors work. Personally I haven't run into anything that needs it. However, I use a camera with an IMX585 sensor so it may not be large enough to see the stuff that might be present on the end sides of a larger sensor.

[silent mesa]

Interesting

I always figured scts were better cuz of Damian peach and Christopher go images but from what you guys are saying I guess that’s not really the case

Atleast for the most part

[white prawn]

This was from my 8" Newt. 45 minutes derotated. Processed a few times to get it just right. But basically it demonstrates the capabilities of a Newt. Larger aperture would get more details.

[silent mesa]

Wow

[low oar]

I love my c11

I haven’t even experienced its full potential yet

I’ve had it for a year now

[silent mesa]

Hm

Now I’m pretty conflicted

[sharp ridge]

Dob is just better

C14 is for rich fks

All hail the dob

[silent mesa]

long live the sct boi

[woven kite]

anyone use biggsky as one of their processing softwares?

[white prawn]

I want to see an SCT go through this without having to purchase extra stuff (warmers). That was being outside for abt 2hrs. SCT would likely be fogged/frosty at the front without a warmer or hair dryer handy.

#🔭-astrophotography-chat message

[silent mesa]

i might image tonight if it clears up

guessing by your pictures my conditions look similar to yours

[quick cairn]

The kings second hand man has spoken

[low oar]

I like my c11

[hasty hull]

Yeah they’re great scopes just less efficient price wise

Unless you get a crazy deal with a used one

[buoyant belfry]

using phone and 6" tried raw for the first time

[white prawn]

How the heck does anybody using a phone get an actual image of Jupiter? All I was ever able to get with my Samsung S8 or any iPhone was a blazing bright white dot with huge flares/spikes followed by 4 white dots with their own spikes.

[buoyant belfry]

did u use phone alone?

or a telescope

[white prawn]

Phone on telescope eyepiece.

[buoyant belfry]

ohh did u take vids and process them?

also what telescope do u have?

[white prawn]

Well if Jupiter would have been anything in detail with my phone I definitely would have done so 😅

I have an Orion SkyView Pro 8 - 8" Newt F5.

I was able to get some decent shots once I got a good camera on her; once I got a planetary camera they're coming out really well

But never on my phone.

[buoyant belfry]

dayum i have a 6" and u have an 8"
not to mention u have iphone ($1500) while i have a phone that $200

ig im really good at phone astro

[white prawn]

All I was working with was the native camera app on the phone; I guess there's other camera apps out there, and I think one is geared for AP so there a few more controls to be able to get the image.

[rain mauve]

another jupiter

seeing was good, but the wind tho

makes my telescope very shaky

creates weird artifact on jupiter right side

[low oar]

What phone

[white prawn]

Samsung S8, iPhone 11, 14

[low oar]

Dang idk then

They prob just have the phone mount

Idk if you have that but it would help

[white prawn]

I had the phone mount, just couldn't set the brightness or ISO or exposure down enough because of the phone limits. 🤷

[silent mesa]

I tried this last night for even longer and there was really no frost on the scope

[white prawn]

Was it -7°C / 20°F?

[silent mesa]

16 degrees F

[white prawn]

Color me surprised. I'd think that the front glass would be a frost magnet

[silent mesa]

Yeah it was pretty foggy

[quick cairn]

Going to derotate soon

[quick cairn]

8” refractor

[rain mauve]

Insaneee

[quick cairn]

This was with an 8” F/15 refractor, UV/IR cut filter, Uranus c, and zwo adc

4000mm

[rain mauve]

Looks very good

[sharp ridge]

Poor conditions last night, but IR pulled through nicely

Ganyschemede transit

[rain mauve]

What is IR filter for? Did some research and didn't get it

i got io Transit

[sharp ridge]

IR is generally sharper in poor seeing

[quick cairn]

What is your method for combing data? I use winjupos but don’t know if it actually works or not

[white prawn]

My own $0.05 is that my experience with WinJupos is that it works pretty well.

[quick cairn]

By works I mean combined IR with luminance if I try derotating them together

Also Saturn 12/15

And Titan

[white prawn]

Ohh.

I would imagine that it would; however, I haven't combined filters in WinJUPOS so I don't have that experience.

[quick cairn]

Yeah that’s why I was asking him haha

My nir was very nice

But I only took 1 video for it

[white prawn]

I need another clear night, like really clear not "faint high clouds just enough to screw up a potentially great shot even though the news says it's clear".

[quick cairn]

Yeah 2 nights ago was the first good seeing night in weeks

[white prawn]

Past few times my weather report has said "clear" I've looked up and seen clouds. Granted they're high clouds and thin so for most that would pass as clear but for crying out loud tell us what the weather is, not what it looks like if you glance for less than 2 seconds.

[quick cairn]

Haha it’s hard yeah

[rain mauve]

barlowed up

seeing was bad

cloud were everywhere and wind also

[flint siren]

It's not planetary but lucky imaging so 😅

[silent mesa]

If I were to get a dob which one should I pick

[digital steppe]

largest aperture you can

[silent mesa]

ill get a 25 inch

[sharp ridge]

Lol

Get a load of this guy

[silent mesa]

alright what should i get

[sharp ridge]

Its just that a 24 is huge and very expensive lol

[silent mesa]

Is a 12 inch goto a good choice?

[sharp ridge]

What do you have rn

Should be good

[low oar]

😂

Fina go buy Hubble

[silent mesa]

Hubble is pocket change

[low oar]

Last full moon this year yall

[silent mesa]

Celestron Nexstar 8se

[low oar]

that can do a lot ya know

to an extent

[quick cairn]

True

[rain mauve]

good seeing actually, sv137 barlow lens

[quick cairn]

And this is with a phone…. Insane

[olive saddle]

helps to have a nice planet-killer telescope (and a phone with an actual decent camera too tbh)

[quick cairn]

he hasa a really bad scope all things considered

its like an astromaster 127 or some

8"

example of amazing seeing

[olive saddle]

wait i thought this was the guy with that neat looking Hadley I saw earlier

I'm not paying attention lol

[quick cairn]

maybe? whats a hadley

he has a rly bad scope iir

[olive saddle]

a very bare-bones Newtonian

[quick cairn]

what the haha if he posted that then maybe that is his

maybe i was confused

[thick heron]

Is the captain's wheel there to help you steer the scope?

[olive saddle]

haha yes

[quick cairn]

The 24" is being colimated this saterday, look foward to using it with next decent seeing

[thick heron]

Have fun. Big mirrors are a whole new challenge to use properly.

[quick cairn]

Oh i have discovered already haha

my personal is only 10"

[white prawn]

? Don't juggle, don't drop, don't use it as a cooking, serving, or eating surface. Oh and don't bash with hammer.

[lean island]

How does one judge what % of frames to stack from a video?

[dark cargo]

How does the graph look like in autostakkert(or whatever you are using)?
Will show you what relative quality the frames are compared to each other.

Afaik you can just do different % stacks of the top x% of your frames and after sharpening compare them to see which is a decent balance of detail and noise

[quick cairn]

The general rule is bad seeing 10-15%, decent seeing 30-40%, and perfect seeing you can push 50 but I usually stay around 35% for all. The thing is it depends how many total frames your video has, my 1 min videos have 18,000 frames, I shoot for 4-5,000 frames being stacked total out of all of the frames, I’ve gathered my methods from better planet guys then me over the year

[rain mauve]

I have a Hadley DIY telescope! Has 4.5 inch diameter

[rain mauve]

This is not mine, but the look yes indeed like this

Here's my setup!

[olive saddle]

I knew it was a Hadley, so I did remember correctly!

[rain mauve]

Good starter imaging for planetary or visual

Tbh haha

[olive saddle]

Out of curiosity, what's the huge steering-wheel looking structure on the focuser tube?

is it like some kind of ultra fine focus tool?

[rain mauve]

It's the focuser it self

[olive saddle]

Ohh ok, got it

[rain mauve]

You steer to get in to the focus

It's quite fun lol

[olive saddle]

I imagine it's gotta be super precise then, given how large the bearing must be

[rain mauve]

Not really, it uses plastic to steer the wheel, no need bearing actually

[olive saddle]

Ah ok

[rain mauve]

Collimation is quite easy also

Since it's f8 and using spherical mirror

Quite slow scope, but the quality is no different than parabolic mirror

[olive saddle]

Huh, didn't know Hadleys used spherical mirrors

no noticeable spherical aberration?

[rain mauve]

I didn't notice any

Chromatic abberation also, didn't quite notice any of them

Its the same optic like celestron 114 eq, using spherical mirror also

It's quite fun to build this telescope, and the best thing you can modify it!

[quick cairn]

Can yall give this data a go?

[lean island]

I’m shite at planetary but I’ll try

I got data to upload as well

[lean island]

There’s this if anyone wants to try

[quick cairn]

Not bad

[lean island]

thanks! i tried my best, i think i did the best i could with the low alt jupiter was at

[lean island]

which one would you prefer i try

[quick cairn]

Either, 2nd has NIR data inside, 1st doesn’t

Gn

[lean island]

what was ur result

[lean island]

best i could get

my second monitor doesnt have the dynamic range so it looks ass but my primary does and it looks good

[quick cairn]

Not bad

Pretty good yeah

[lean island]

tried to keep it natural looking

[quick cairn]

I haven’t decided on a final for me yet

I prefer it natural looking too

[lean island]

i dont like the look of waveleted jupiters

undercooked > overcooked

[quick cairn]

Gn

[lean island]

how much difference do you think 25 degrees alt vs 60+ would make

i imaged at 25

[lean island]

https://tenor.com/view/bed-daniel-labelle-jump-in-bed-sleep-sleep-time-gif-16384901082448291556

[quick cairn]

It’s seeing dependent

[lean island]

ya jup was at 25 so ur looking through more atmos yeah

[quick cairn]

Seeing > all other variables

[lean island]

Are there any ways to see predictions/measure seeing conditions for planetary without directly imaging?

[cursive marsh]

Kind of, but it's really hard an inconcistent to predict. Sometimes the sky can go from horrible seeing to great seeing within 15 minutes

[lean island]

@signal holly this yeah

[signal holly]

thats the file i used

[quick cairn]

Some generally true advice is early in the morning like 2-3-4-5-6am seeing is better than before that

Most of the air currents by then have cooled down completely

Also if there is very thin and high clouds moving very slowly that’s a good sign

If that’s the case I would setup and wait for opening in clouds

[somber stratus]

poopiter this morning

finally some reasonable seeing for this apparition

[rain mauve]

Insanely sharpp

[main flume]

itta circle

[rain mauve]

jupiter just now

4.5 inch telescope

collimation could be better

[quick cairn]

Awesome man

[quick cairn]

Jupiter tonight on the 24”, we got it colimated, wish me luck

[somber stratus]

hope for usable seeing

you'll need it

[sand umbra]

Very nice, currently I’m working on the math to figure out the perfect exposure setting to bring out the most detail to the brim from my 10”, 2 years ago I got pretty close, got the caps or shading of Io but as soon as seeing gets better hopefully I’ll be ready

[white prawn]

Invite him to your backyard, the clouds just move away for you.

[sand umbra]

Exactly, the seeing listens to tom, and he sends the disturbances to Hawaii (my location)

We just had our 500th jetstream pass this year

[somber stratus]

Best to just read up on scientific papers. That's what I did. 10msec is the ballpark figure for sufficiently "freezing" the atmosphere.

below that you just sacrifice per-frame SNR and hence stacking accuracy

well, depends on the target of course

Venus and Mars you go definitely go into the single digits

[sand umbra]

Yeah I’ll try look into some but might as well learn something along the way, doin some science

I got back after a 2 year break of astro (I was destroying my sleep schedule) images were fine but not up to par for a 10”

[ruby compass]

@somber stratus i have a weird issue. I had really good seeing yesterday but for some reason my images of jupiter were not sharp at all. (Perfect focus) idk if my colimation was off or smt but it just feelt very weird..

[quick cairn]

Definitely colimation

I spoke to Christopher Go on the phone for a while last night, he was giving me advice getting into the realm of huge mirrors

[silent mesa]

bro what

[flint siren]

soft seeing

show image, that will tell more than a statement

[ruby compass]

video or just image?

[ruby compass]

i mean i did colimate it outside like 2 times during the night but it felt off..

[flint siren]

waveled stack

[ruby compass]

so no process?

[flint siren]

bruh

stack sharpened

[ruby compass]

first of all i stack in astrosurface

[flint siren]

i don't care

[ruby compass]

2nd i sharpen afterwards

[flint siren]

just show sharpened stack

or just send stack if that's too complicated

[ruby compass]

i gotta restack cuz i lost the stack. 1 sec

also do u want both ir or just vis?

[flint siren]

both

[ruby compass]

k. but 1 weird thuing

earlier in the night ir looked kinda sharp but later ir was worse than vis

how is that posible?

[flint siren]

no idea, collimation might be possible

vis looking more contrasted can trick

the stacks will tell anyway

[ruby compass]

ye

sharpend a lil (stacked 10% of 4.5k frames)

@flint siren

[flint siren]

Lol that's shit seeing

[ruby compass]

but seeing was good

[flint siren]

Stacks says otherwise

[ruby compass]

want live view?

[flint siren]

Maybe stable with hella convolution

[flint siren]

Yeah

[ruby compass]

prob

[flint siren]

For vis

[ruby compass]

vis

kinda shakey video

was windy a lil

[flint siren]

that's terrible seeing dude

[ruby compass]

like top 5 seeing i ever had lol

[flint siren]

well if so then i'm sorry for you

[ruby compass]

actually 2 of the ir videos were really sharp

[flint siren]

whatever, what you showed me is terrible seeing

your stacks clearly show it

[ruby compass]

best (i think) ir stacked n processed

fairly sharp

[flint siren]

that's not too bad but for IR that's still not good

if it was vis i would've said average seeing but for IR that's poor

[ruby compass]

its kinda weird tho cuz i had even worse seeing for this

[ruby compass]

this was with worse seeing at a lower altitude

[flint siren]

well apparently not

[ruby compass]

so u dont think my colimation was off at all?

oh yeah i did actually take a picture of my colimation

this is beatlegeuse

[flint siren]

yeah i would say collimation was fine

[ruby compass]

alr

also why is it not sphere?

like the outer ring

its oval

[flint siren]

dunno could be multiple things

[ruby compass]

oh yeah here is the live view of the really sharp timelapse i sent.

[flint siren]

though i would say to use the airy spot to collimate

[ruby compass]

its like sharper but more turbelent

[flint siren]

thermals on your vid

looks sharp but it's trash

[ruby compass]

had my telescope outside for 5h before imagung

[flint siren]

could be from local seeing or even jet stream

[ruby compass]

remeber it was at 28 degrees lol

i dont think thats trash

[flint siren]

i'm gonna quit this server

[ruby compass]

why?

[flint siren]

you don't want me to answer

[quick cairn]

Yeah he invited me to a call with Simon yang as well

[ruby compass]

yeah

[ruby compass]

i d

o

[quick cairn]

@somber stratus he said that Raw video is better than RGB for color cameras like Uranus-c, do you agree? I’ve always used RGB

[flint siren]

helping people here feels more like torture than something else

[ruby compass]

how so? i mean i am gladly listening to what ur saying

[flint siren]

like you mix up things all the time it's a real pain when discussing

[ruby compass]

ah mb

[flint siren]

like low altitude doesn't necessarily mean bad seeing

[ruby compass]

it worsen the general seeing

[flint siren]

you can have perfect seeing at 30 deg

[ruby compass]

than you will have even better at 90

unless a jet stream ofc

[silent mesa]

how did you make it happen

[flint siren]

mostly i meant that whatever the altitude, seeing quality is seeing quality

like i don't care the altitude, for this given moment it's bad

[ruby compass]

ye ofc. however its rarer to have a 9/10 seeing at 30 compared to 70

[ruby compass]

k

[flint siren]

bro just stop, spare my sanity

[ruby compass]

yeah

prob my sharpest ir

[flint siren]

you can raise the exposure time with IR

[ruby compass]

i can?

[flint siren]

that SNR is trash for an IR stack

What's the filter there ?

[ruby compass]

685 so not too bad

[flint siren]

Yeah i use 17 ms for IR720

[ruby compass]

i use 14 for 685

[flint siren]

With a 685nm filter you have much more available SNR than this

[ruby compass]

not a big dif

[flint siren]

Heh that does not look like it

Lemme show you

[ruby compass]

high gain mabey

also i cant use a higher expoture time cuz if i do it will lower myfps

[flint siren]

Not really, just go at 50% of the histogram and gain will be fine, whatever the exposure

[flint siren]

Yeah but with improved seeing from IR, you gain a lot of SNR with higher exposure time.

Fewer frame with better SNR is better than more frames with less SNR

[ruby compass]

i dont want less than 64fps tho

[flint siren]

why ?

If the IR seeing can handle more

[ruby compass]

cuz more frames is better=

?*

[flint siren]

read that again

[ruby compass]

oh

so what should i use instead of 14ms?

[flint siren]

For example, this a raw stack. 2 mins of IR720, 35% stack, 16.91ms.

More SNR than on your derotation.

[ruby compass]

thats not deroatated

its 1 min stacked

[flint siren]

Whatever, the SNR difference is huge.

And you can run 2 mins too

[ruby compass]

crazy. but one question. why is the moon so big?

[ruby compass]

would i get motion blurr?

[flint siren]

Nope

[ruby compass]

oh

[flint siren]

For the 2nd time, airy spot

[ruby compass]

actually im not sure that i can do 2 min

[flint siren]

you can

[ruby compass]

ah

[ruby compass]

not with myt tracking no

[flint siren]

what does this have to do with tracking ?

[ruby compass]

i cant record a 2min video due to tracking

[flint siren]

didn't you had an EQ platform ?

[ruby compass]

i do

but ground is not stable at all during winter

[flint siren]

what is the problem then

[ruby compass]

and its not perfect

[flint siren]

whatever, stack more frames and set a higher exposure time

[ruby compass]

ye

i feel like 30fps is prob the sweet spot if im doing 64 rn

that would be like idk 30ms?

[flint siren]

Not really, 30ms is 33.3 fps

[ruby compass]

close anough

[flint siren]

But 30ms is too high, you lose sharpness

[ruby compass]

so what do i do than?

i do 14 rn

[flint siren]

17 ms is good

[ruby compass]

alr

[flint siren]

i use it while at F/26 so you'll be good

[ruby compass]

isnt 10 optimal for sharpness? or is that just vis?

[ruby compass]

yeah im at f17 usually

with barlow that is

[quick cairn]

Messaged him

[silent mesa]

you know him like that? 😄

[somber stratus]

makes minimal difference to the SNR of the stack.

[rain mauve]

What is the purpose of ir filter for?

Uv/ir cut filter isn't enough yet?

[flint siren]

For when you want to capture NIR wavelength ?

It has a different purpose, mostly to make images when seeing is poor, or when you're interested in seeing the planets in a different way.

[rain mauve]

Even with good seeing, still can get benefit of it?

[flint siren]

Nope, as a longer wavelength leads to a lower resolution, due to the diffraction of light by the telescope's aperture.

Unless you want to observe something that benefits IR.

[rain mauve]

Something likes uranus??

Or Neptune?

[flint siren]

Neptune no unless you've got a very large aperture

Uranus does benefit as the only easily observable detail is the polar hood, better visible with R&IR wavelengths

Jupiter and Saturn have some things too such as methane absorption bands

[rain mauve]

I see..., in my case with 4.5 inch, do I need them? For a better images? Or I stay with integrated uv/ir cut filter, I don't have any plan, or observe such thing like methane or something, but is it something required?

[flint siren]

No you won't really benefit from IR, because your resolution is already low.

For methane yeah you need specific filters.

[quick cairn]

Methane is good for clouds

[rain mauve]

Oh? What is the filter, can I benefit from it?

[flint siren]

For the second time, no.

[rain mauve]

Ah too bad

[flint siren]

We usually image in these wavelength when seeing is too bad to image in vis.

It's not very interesting unless you're do weird comps but that is for very advanced levels.

[rain mauve]

Ahhh I see, alright thanks for the explanation!

[flint siren]

For example these are the two strong methane absorption bands (889nm & ~1010nm).

[rain mauve]

Woah

Is it always monochrome?

[quick cairn]

Do you film methane in mono or in RGB or raw

[flint siren]

And this what you see with every other IR filter basically.

[flint siren]

Yeah it's one wavelength.

You can capture it with color camera because the bayer matrix is transparent at these wavelengths, but there's no point.

[quick cairn]

How do you create the winjupos animations without it messing up really bad on the edges?

[flint siren]

Huh ?

It's complex

It's a question of the sequences you put in and how do you use them.

[rain mauve]

I see....

[quick cairn]

When I image in 850nm it’s a dark red unless I use mono

[flint siren]

Yeah that's because of the display settings probably.

[quick cairn]

Gotcha

[flint siren]

What software are you using ?

[quick cairn]

Sharp pro

[rain mauve]

Sooo with those filters like IR, methane and any other filters that related to planetary, can make a false color of the planetary itself?

[flint siren]

If you use firecapture, you can set your balance to use the three colors at the same time.

[quick cairn]

I see

[rain mauve]

Like for example Tom's false color of Jupiter?

[quick cairn]

My white balance is 50 across the board that usually gives real color but

[rain mauve]

Is it something like that?, I'm sorry, I'm kinda new to these things

[flint siren]

Yeah. If you have at least two images with different wavelengths you can make a false color.

[rain mauve]

I see nowww

[flint siren]

You can do some pretty cool things when playing a lot with filters.

That's NearUV(B)-R(G)-Methane(R)

Jupiter is less pretty though in false color.

[rain mauve]

Woahh

Very cool

[rain mauve]

O_o

Indeed very cool

[flint siren]

Tethys was in transit btw, it's visible as a small red dot on the northern part of Saturn.

In the middle of the northern part.

[rain mauve]

Yeahh I see it

[quick cairn]

Human bias

Agree tho

[quick cairn]

progress since last 24" photo. i feel like i can do much better though, i have to drive home 90 mins but ill process all 20 videos later

My main issue is storage atm

But that won’t be a problem for long

2TB ssd soon

[quick cairn]

Just now got home that’s called a pit stop nap jeez

[ruby compass]

Ir is almost always sharper and its a differant wavelengt so you are capturing differant data

[ruby compass]

Yes. Since you are not imaging in visible Light. Aka the Light with color

[rain mauve]

Thanks!

[rain mauve]

Anyway can you combine into RGB data?

Is there any specific way to combine them?

[ruby compass]

If you want ir?

Well you could use ir as red but ofc it wont look the exact same as normal rgb

Oh yeah also ir is really cool on nebulae. It lets you see thru a bit of nebulae

See the differance in stars? (2nd image is ir) well its more stars in the ir one because you are seeing thru nebulae that obscures the stars

[rain mauve]

Woahh

[rain mauve]

Yeah I can see more stars in there

[ruby compass]

Ye

[compact bough]

Skywatcher 150 750 phone ap
Ngl i could get better results next time but it good enough imo

[rain mauve]

jupiter 30 mins rotation 21/12/2025

[main flume]

IrRBIr imag

[digital steppe]

lower your gain

[digital steppe]

im reserving a spot on my future filter wheel for an ir filter

[main flume]

good.

[digital steppe]

L, R, G, B, Ha, Oiii, Sii, Nir, possibly helium and argon

[quick cairn]

Jupiter and Io

[graceful creek]

hmm

[quick cairn]

bad seeing sadly

[cursive marsh]

I'm having a hard time getting jupiter better than this with how absolutely ass my seeing has been since i got the new 10 inch

Typical i guess

Saturn too

I could do so much better with what i have lol

[rain mauve]

so i tried to use my 80mm refrac to test my jupiter, got a shit seeing so this is i could get, only 10 second also

15 ms and gain around 350

[low oar]

That’s not bad dude lol

[cursive marsh]

Dude that's crazy for an 80mm frac

[rain mauve]

It has very noticeable chromatic abberation also, but yeah sharpcap provide the ca reduction

[rain mauve]

Thanks!

[rain mauve]

Thank you

[glad mason]

what 80mm frac did you use? Looks really good for an 80mm

[quick cairn]

I used an 80mm for a while, refractors for cheaper scopes have high focal length and are decently sharp, chromatic aberration is an issue

[rain mauve]

80eq dx

Cheap refrac telescope

[rain mauve]

Yes my issue is this the CA is high

[glad mason]

oh the deluxe thing? from celestron?

[rain mauve]

But thanks to sharpcap, I can reduce the CA a little bit

[rain mauve]

Yes

[glad mason]

did you get it from a seller in fb? Mr Bambang?

[rain mauve]

Noo... I bought it very long time ago

[glad mason]

ohh

[rain mauve]

I use it to get like jup image w/ my phone

[glad mason]

nice

[rain mauve]

I'm planning to buy eq3 from him

Maybe I can negotiate with him

[quick cairn]

You aren’t actually reducing chromatic aberration at all, you are changing how the photos are read a little bit to account for it

A scope without it would be better than using the sharpcap feature

[rain mauve]

Yes indeed it doesn't reduce it

But atleast it looks 'acceptable image'

According to my eyes,

I forgot to do RGB balance also

I don't use it on my DIY reflector tho

[rain mauve]

The ca reduction

[rain mauve]

shit seeing

80mm fractor

[quick cairn]

So happy

[brisk yacht]

that's a beefy cable

what are you going to use it for

[rain mauve]

some good seeing finally

80mm refractor

Ganymede transit

[quick cairn]

AwI some

Awesome

[rain mauve]

Thanks!

[pine bobcat]

First time with a barlow

Heritage 150p

[brisk yacht]

how would yall rate this seeing

shot with a skywatcher 150p and a 2x barlow so the most suboptimal setup for this seeing

final pics (wavelets vs deconvolution)

[flint siren]

Nice compression

[brisk yacht]

yes but what do you rate it

[flint siren]

Jpged/10

[summer pebble]

wobbly jupiter

[flint siren]

At least you have clear skies lol

It's been cloudy for the last two weeks

[sharp ridge]

jetstream go brr (75kt)

[flint siren]

Ain't so bad

[woven kite]

this guy def ran this through ai (amazon reviews for svbony mk127)

[flint siren]

That ain't AI, but it's a processed screenshot of a simulation, from WJ probably.

[quick cairn]

Good transparency bad seeing

[quick cairn]

You need to colimate

[quick cairn]

Planetary at 10,800mm

F/18

[pine bobcat]

why, how can you tell?

[quick cairn]

This similar shaping blur on one of the sides is due to colimation

[pine bobcat]

oh

thanks

[quick cairn]

Yep

Also how long was your video?

If it’s a 6” don’t take videos longer than 90 seconds

[pine bobcat]

Yeah it was 90seconds

[quick cairn]

That’s a lot of movement for 90 seconds…

I suppose it could be to seeing

[pine bobcat]

i went along an editing tutorial for this one

it's from the same data

[quick cairn]

Gitcha

You see how the moon is stretched?

[pine bobcat]

yeah

[quick cairn]

That’s due to bad colimation

[pine bobcat]

i see

so a star test?

Oh also i suppose i should mention that jupiter was under the 30 deg line when shooting

[quick cairn]

That’s fine

[quick cairn]

Point at one of the biggest stars and unfocus slightly and see where the hole is

[pine bobcat]

If its in the center its fine?

[quick cairn]

You want it to be the very center

[pine bobcat]

Ok ill try it out when the skies are clear(probably like a month)

Damn weather

[compact bough]

How come

I thought 3min was ok is it due to rotation of Jupiter?

[sand umbra]

@somber stratus what scientific papers did you read to figure out exposure settings for planetary?

Should I just use 10ms

[quick cairn]

It’s based on aperture

The more aperture you have higher focal length due to certain rules = faster noticeable rotation

An 11” handles Jupiter best at 45 seconds, 14” at 30

According to Christopher go atleast

I stuck to 60 seconds with my 10”

[compact bough]

Damn I didn't know abt that

[quick cairn]

10ms is the sweet spot for cutting through the air, any less and you are just sacrificing snr

[compact bough]

I always thought it's rotation potentially seeing

Thanks man

[quick cairn]

No, it’s because of Jupiter’s rotation, but the issue is the more light you collect the more noticeable. The rotation is going to be with smaller and smaller details.

Three minutes is fine for a small refractor

[compact bough]

Nah as in main

Its logical for 2 3min but didn't know abt the aperture

[quick cairn]

I will try this

[compact bough]

Alr Gl bro

[quick cairn]

February haha

Uranus

7200mm

[compact bough]

☠️

I couldn't even see it thru my 150

[quick cairn]

You can it just looks like a star

I used to have a 150

[compact bough]

Yh probably didnt notice it 😭

[quick cairn]

Yeah haha

Takes a lot to see it’s not a pony

Point

I’ve never imaged Uranus before

When seeing is very good I’m always focused on Jupiter or Saturn

[sand umbra]

What’s your usual setup?

[quick cairn]

10” skywatcher, ir/uv cut, imx585, 3x powermate, zwo adc

[graceful creek]

i saw this and the text and got confused

[digital steppe]

use a guide camera for the big scope

[elder venture]

to the more experienced noot people, is this mirror still in the boundaries of "acceptable"?

sorry for the horrible quality, idk what the OP did

[graceful creek]

wash it

dry it in microwave

30s

[quick cairn]

i dont have one haha

[quick cairn]

yeah

whoops

Moon last night

ooo...

crop needed

there we go

[quick cairn]

I need an Astro expert to tell me where these artifacts derive from when I sharpen

[graceful creek]

space worms

[flint siren]

Poor snr makes AS!4 go crazy

If the seeing is not too wobly, try using one big AP around the planet.

It reduces the apparitation of these artifacts.

[graceful creek]

https://tenor.com/view/fun-ok-gif-23395164

[brazen moth]

Where is the attach image upload button in discord these days?

I can create a poll, use apps, add a gif, a sticker, and an emoji.

[quick cairn]

Ask a mod

[ruby compass]

@flint siren any tips on improveing the sharpness of planetary images?

Also ir is gonna be ge great with my new camera!

The zwo asi 585mm pro

[flint siren]

What is that question brother

[ruby compass]

Im asking

[flint siren]

That's too vague

Dunno good seeing is a first start

[ruby compass]

Well I know for a fact that more sharpness is possible with even an 6" compared to what im getting with an 8"

Like surface detail on moons is possible with an 6"

But im not even getting near that

[ruby compass]

Well yeah

[flint siren]

Well show me your best image and i will tell you what to improve based on that

[flint siren]

For both, use less wavelets.

[ruby compass]

Ye

[flint siren]

For Jupiter, it clearly lacks integration. More percentage on the stack, and integrate around ~20 mins.

[ruby compass]

Ye

I never have good seeing tho

[flint siren]

That's basically it

[ruby compass]

😭

[flint siren]

I'm sure you have some

[ruby compass]

Seeing could be better

[ruby compass]

Avg like 2-3 arc/s

[flint siren]

Based on your IR stacks, you can at least reach IR diffraction limit.

[ruby compass]

That cant be the limit tho?

Your ir is sharper

[flint siren]

Nope, not sharper, just more SNR.

[ruby compass]

Saturn aswell

[ruby compass]

Looks alot sharper

[flint siren]

Saturn is a tough one with small aperture. Needs a lot of integration.

[ruby compass]

Ye

[flint siren]

I do around 1h30 mins usually for vis.

[ruby compass]

And its never more than like 20° above horizon here

[flint siren]

Ir is more 30-40 mins.

[ruby compass]

Amy images?

[flint siren]

With mono

[ruby compass]

Thats insanely sharp

[flint siren]

Not so much, the angle is tricking your brain there

The diffraction spot has actually the size of the ring + shadow

[ruby compass]

Oh yeah 1 question. When I have my mono cam. How do I shoot jupiter for example? Wouldnt I get cromatic hues from the stacking of differsnt filters?

[flint siren]

Chromatic hues ??

[ruby compass]

Idk how to explain

[flint siren]

Motion you mean

If so, RGB derotation.

[ruby compass]

That works?

[flint siren]

Personnally, i recommend going colors for Jup not mono for vis

RGB is a pain to color calibrate

[ruby compass]

So my 224mc is better for jupiter besides ir?

[flint siren]

224mc is a bit old

uhh

dunno ask Tom i know he has one

[ruby compass]

@somber stratus ?

[flint siren]

(about performance compared to newer color cameras)

[ruby compass]

Ye

[fading plume]

Added it.

[graceful creek]

Heres what you would look like in alternative universe

[silent mesa]

Tuff

[left spindle]

i need help processing this. How do i make it even lightened (it is like this cause i was doing it untracked)

[sharp ridge]

dogshit seeing and shooting through a tree but wanted to see if i could get ina anyway

not too hard

[main flume]

wha, why

[main flume]

actually stop 😭

[quick cairn]

Aperture rule

[main flume]

?

[thin aspen]

dont know what is going on with the artifacts but here it is

[left spindle]

Thx, probably cause of less data. Ill try to get more next time

[thin aspen]

Won’t be that, looks to me like a stacking issue.

[native plume]

Was something blocking the moon?

[quick cairn]

Higher aperture = higher focal length usually, but not only that also more light collected = smaller defraction limit, which also forces more blur during the same length of video, so general rule is there bigger the mirror the shorter than videos

Rotation blur

And field rotation both matter

[flint siren]

Not really. Softwares like AS!4 can deal with that rotation with the AP points.

Unless you've got a 2 meter scope you're fine running the same capture length you use with smaller scopes.

[quick cairn]

I respect your opinion however I was taught this by Christopher go a world of class 20 year planetary veteran

I mean, even Tom uses 60 second recordings instead of two minute, there has to be some sort of underlying reason for that however his camera might have slower frame rate than Christopher’s so he has to account for that

[thin aspen]

You limit your capture time mainly for planet rotation not field rotation.

[thick heron]

It can be either or both.

Field rotation is a big deal near zenith.

I learned the hard way when shooting Mars as it crossed the meridian at 85 degrees high.

[quick cairn]

I said both. And with large apertures, both do matter, especially near zenith

[left spindle]

Nopw

[left spindle]

Ah, the brightest area was my actual fov.

[quick cairn]

Shooting Uranus rn

Not looking good at 3600mm granted I’ve also never tried so

Using 895mm

[loud ledge]

Hello guys

Does anyone know any good filters/filter wheels for a monochrome planetary camera (mine is the Uranus-M)

[elder venture]

Filters would be the usual RGB + IR as a start

the filters player one makes are pretty good

as for a filter wheel, you could get away with just a manual one from e.g. ZWO

[quick cairn]

Jupiter 30x26 December 28th 3:30 UTC

[quick cairn]

What

clouds rolled in sadly

right before transit started

Jupiter 30x50 December 28th 3:50 UTC

all things considered not bad

10" shitty seeing

[loud ledge]

Okay thanks for the help!

[quick cairn]

I should have taken more nir

[main flume]

orang

[main flume]

orang

[teal sandal]

orang

[woven kite]

https://tenor.com/view/fafa-fafa-spin-regretevator-annoying-orange-fafa-3d-gif-2970553886164056603

orang

[olive saddle]

hate that

[graceful creek]

why is shadow on there when moon there

[elder venture]

.... do you not realise how light works 😭

[graceful creek]

no

also how transparent are planets? i feel like edges are bit translucent

atleast gas ones

by edge i mean probably like 100km idk

[quick cairn]

It’s a derotation

It’s just like that sometimes

[sterile marsh]

Ok so i would like to inform yall that someone named benjafish might join this discord server and start spreading stolen content trademarked as his. This personaly happened to me a few days ago and i managed to get him banned from some servers

[ruby compass]

From Cosmic?

[sterile marsh]

And astronomy HQ

[ruby compass]

Ah

[native plume]

fire

[graceful creek]

can we guess the angle of sunshine on Jupiter in terms of our pov

using that

[shy jolt]

do you guys have any tips how to get sharper images with a dob and a dslr?

[candid flare]

get better seeing

[graceful creek]

get high (using whatever means except grass or acid)

less atmo is less air and light pollution

or get in desert idk

[quick cairn]

Okay the trolling is getting annoying, can you stop.

[quick cairn]

Uranus

[woven kite]

been doing a little research for an all round planetary telescope. are there any goto alt/az mounts with reliable daytime solar system alignments? for an example: slewing to the sun/moon to align after setting precise coordinates and leveling, then going to other planets with minimal offset. this would be easier than a 2 or 3 star align before sunrise and having it sit outside all day.

[quick cairn]

I don’t think so

[livid sierra]

SW Dobsonians can do this.

[graceful creek]

whats SW dov

don

sob

fricv

[fading plume]

skywatcher

[graceful creek]

thanks

[woven kite]

one of the scopes i had my eyes on for a bit

[rain mauve]

Composite moon that I've made!

[quick cairn]

Good scope

[flint siren]

holy cook session

[quick cairn]

Yoships your Uranus with rings is with an 8” right? Does it just take good seeing? Also what gain and exposures were you using

[quick cairn]

Pretty good

[quick cairn]

8”?

Oh yes last thing, what F/ratio were you using and what camera?

Because Uranus is so small for me with an ADC and a 3x Powermate at native 1200mm so 4200~ and it’s so damn small

I have another sensor with half the pixel size 1.45 microns I’m wondering if I should try that instead of the Uranus-c

This was bad seeing with 850 nm

30,000 frame stack

10%

If I sharpen any anymore, it just gets grainy. It’s not that many pixels.

[flint siren]

Once you have good seeing and good enough tracking, it's just about how much light you can collect

For my first successful attempt, it was IR850, 600ms 450 gain. The second was IR720, 300ms 300 gain.

[flint siren]

Yeah

[flint siren]

f/10, ASI462MM.

[flint siren]

Nah, Uranus-C is good enough, just make sure to go at around f/20+.

And integrate a lot, i usually do more than an hour for both R+IR and vis.

[quick cairn]

God damn

[quick cairn]

That’ll put my focal length at around 5000

10”

How perfect does focus have to be because I feel like when you’re that over sampled focusing is very hard

[flint siren]

Sounds about right, i run f/26.

[quick cairn]

Damn

How on earth do you sharpen

[flint siren]

Just focus using a the airy disk of a star

[quick cairn]

Okay, so I use an ADC for Uranus?

[flint siren]

yeah as for all the planets

[quick cairn]

Gotcha

[quick cairn]

This long of exposure I did not expect this is very interesting that you were successful

[flint siren]

that's for the ring

and two hours with IR850

[quick cairn]

But not just the rings, the rings and Uranus or did you blend

[flint siren]

IR720 was 15 mins, but it's like barely visible

[flint siren]

it's an HDR composite

[quick cairn]

When you say 15 minutes, do you mean the rotation?

[quick cairn]

What does that mean

[quick cairn]

Sorry derotation?

[flint siren]

nope, for the rings it's just a stack of stacks

[quick cairn]

So you stack stacked photos

I guess they don’t rotate that’s cool