Ritchey–Chrétien enjoyers thread

[tight lodge]

225 or 240

I would go for the 240

[harsh matrix]

where is that?

[tight lodge]

https://a.aliexpress.com/_Ew2m9uC

[harsh matrix]

oh it's a no go if it is coming from china

i am not going to chance any tariffs

[tight lodge]

Ahhhh... 🫠

[tight lodge]

Don't you guys have a limit there?
For example over here, as long as the imported product/products don't exceed the price of 150€ I don't have to pay import tax.

[harsh matrix]

they got rid of de minimus which did set a limit

so not anymore

that WILL get tariffed unless Aliexpress has somehow exempt themselves from tariffs

[tight lodge]

How about mine?😭

[tight lodge]

That really sucks.
Now it makes sense why more and more Americans want to leave that country😂

[harsh matrix]

That's for other reasons

[digital nexus]

mad cause you ain’t us

[tight lodge]

Well... the country I was born in also did wrong to me. Soooo I moved

[frosty shard]

Guess who lost 3 hours of imaging time

Thanks NINA

[harsh matrix]

huge improvement

all hail the RC8

[frosty shard]

Is this ISH palette?

[sinful sapphire]

It’s…. So peak

[frosty shard]

The texture in IC 434 is so well defined

Also I love the gapped diffraction spikes since there's only one broadband channel

[harsh matrix]

yes

[harsh matrix]

yup

it's pretty cool

[harsh matrix]

dont worry

we getting more data until it starts raining

and i just did the final tune to my EQ6R so the next batches of data will be even sharper

[tight lodge]

Alnitak it's actually not that bad

[harsh matrix]

it's wreaking havoc on the image just off to the right of the frame

i cropped that out because nobody wants to see that

[tight lodge]

Why are you making me swap by IR filter again?😭

[harsh matrix]

i aint making you do anything

[tight lodge]

You know what? I won't, just for the moment

I'm not gonna do another IR project until I get my hands on a 10"

[harsh matrix]

there you go

get some more aperture and bring that diffraction limit down

you will get much nicer data that way

RedCat jump scare

[tight lodge]

I mean... my resolution in IR atm is the same to a janky redcat

[harsh matrix]

exxxactly

double the aperture, you will get far more resolution

Alright I think this is my best M20 by far

[tidal hearth]

Get a lifepo4 battery with bms

1240Wh for around 200€

I will Sell my 150p

Has a bu spider and mirror mask

And then get a askar 103

[frosty shard]

Got a link? (I'm in the US so availability/prices will vary)

I currently have a 280 Wh battery so I'll be happy to just go up to 500 Wh or so

[tidal hearth]

It’s a German link

https://amzn.eu/d/cz0Io8R

You Need to get a 12v lifepo4 battery with bms

Also a Charger for it

And Adapter from Ring to idk ur powerbox

[frosty shard]

Do you happen to use yours with NINA?

I'd love to have my rig automatically park and shut down if the battery drains too far

[tidal hearth]

The battery shuts off after some time with no power draw

And you Can Connect the battery to Ur pc via bluetooth and See the Powerdraw and turn it off/on

[bleak solar]

I can finally test my RC6 tonight and I want to shoot the cats eye nebula. Do any of you have any tipps which I should keep in mind?

[tight lodge]

I didn't realize until now that I will actually double the aperture 😂

[frosty shard]

Just stretched

[frosty shard]

honestly if it's your first night I would recommend just having some fun and doing EAA - survey a bunch of different objects

(that also can be a good stress test of your mount/scope combo - you can see if you have any trouble with guiding across different parts of the sky)

[silver ibex]

The serious ones are RCOS

Probably coat a kidney tho

[bleak solar]

might be a good idea too

I have too many targets in mind and the night isnt that long xD

[sinful sapphire]

BLASPHEMOUS

[tight lodge]

I totally agree

[bleak solar]

Quick thing… I cannot balance this with my imaging setup attached… do I need to get a longer dove tail?

Then I probably can’t use the door tonight, right?

[alpine flame]

ur telling me that its that back heavy<

?

attach something heavy on the frontal dovetail part

thats what i would do

[bleak solar]

I have the filter wheel plus camera plus off axis guider and the extension things for the backfocus

[tight lodge]

Well... I would firstly strap the cables to the OTA. Then find a small counterweight to attachbon the dovetail in front of the telescope

[bleak solar]

Yeah I will do that. But not tonight this makes more sense during the daytime 😅

[tight lodge]

Them cables dangling like that make me nervous

[silver ibex]

Considering I'm buying a new OTA soon I could sell you my dovetail counterweight

[digital nexus]

gonna have another Falling scope situation 😭

Didn’t know it was possible to have worse cable management then me

[bleak solar]

That sounds like a great offer! Should I PM you?

[silver ibex]

Yep

[sinful sapphire]

What's the RC Clan's opinion on hyperbolic superfast newtonians

[frosty shard]

EW REFRACTING ELEMENTS
Tbh I'm interested in one...sounds like a solid comet catcher. I wonder how usable they are visually

[tidal hearth]

If you want a cheap and absurdly fast newt get the quattro 150p

f3.45 at 519mm

[harsh matrix]

I had to get a counterweight for the dec

[frosty shard]

At the moment I'm not in the market for a new scope...I'll probably get an Askar F series next

[harsh matrix]

@frosty shard you have any clue what could be causing this light leak?

none of these dust motes calibrated out and the vignetting is the worst ive ever seen

[frosty shard]

Is this at native FL or with a reducer?

[harsh matrix]

reducer

it could still be the focuser

i cant really come up with a better solution without printing some super sophisticated thing to put inside the decoupler to stop all of this

im genuinely about to give up broadband

[high aspen]

@frosty shard only got 40 mins more on c5 😭

[frosty shard]

I am honestly not sure, the only time I've had something similar happen was when I stacked all of my photometric frames. But that wasn't really proper image data (taken on a full moon, undithered)

[harsh matrix]

i did one night where i dithered every 3 lum frames and shot all lum and that's when i noticed the first major issues

now that you say that, i wonder if that night is causing issues

[frosty shard]

was it close to full moon?

[harsh matrix]

that would be infuriating if so because that's basically all of my lum data

[harsh matrix]

no

i think there was no moon the entire duration of the imaging window

again

that's why i dont know what is leaking

how is it this bad?

what the hell is aimed at my scope to cause this massive of a problem WITH A SHROUD AROUND THE FOCUSER DRAWTUBE

I dont understand

[frosty shard]

Actually I have one question for you

Is your flat panel translucent all the way through?

[harsh matrix]

my biggest concern is that the blue channel looks the same as the lum

not quite as bad since it is less data

[harsh matrix]

yes but i put something opaque to cover the whole aperture with the panel between the aperture and the opaque thing (normally the scope cover)

i figured that could be a problem before i ever tried the panel

maybe i could try something to cover the entire panel?

I took these flats after sundown though

[frosty shard]

I actually have been trying this with aluminum foil, but I forgot - when I tried it I saw no difference in correction

[harsh matrix]

there was not much of any light out there beyond the normal sky glow and the light from this panel

[harsh matrix]

ugh

this is on my nerves

[high aspen]

eedle deedle needle

[harsh matrix]

My clear streak ends tonight

Indefinitely

[high aspen]

clar streaks arent real

[frosty shard]

Bro same

And I lost all my imaging time last night

[harsh matrix]

Rip

Well its supposed to be cloudy starting tonight around midnight

Im just going to bring the scope in because theres a decent chance of rain, and it will rain thursday

While I have it in here im going to dissect everything on it and design parts to solve my problems because im tired.

[chrome kite]

most i had was 10 days

this isnt general

https://tenor.com/view/owl-in-rain-cute-awww-gif-13834910

[harsh matrix]

@frosty shard I shoved my head into the aperture and covered every gap so no light could get around my head, and I shined my phone light at the gap between the little shroud I made and my OAG, to see if light was getting in there and going up the focuser

I saw literally no change in illumination

Can't see the sensor at all without light getting into the aperture, should have seen some of the light leak was the focuser.

W T F.

[frosty shard]

Well...uh...

I got nothing honestly

[high aspen]

cat

[harsh matrix]

I stacked without the sussy night and it's just as bad

it only looks less bad because of less integration

im genuinely clueless

[chrome kite]

mrrp

[high aspen]

miau

[harsh matrix]

I think its a reflection or something.

The bad part is it's such a subtle problem that you cant observe changes in it throughout a night.

[high aspen]

any houses and lights near you?

[harsh matrix]

Everyone around me.

But not all night.

This issue persists all night, every night.

@frosty shard I may have just found it

[high aspen]

oh

[harsh matrix]

It is beyond a doubt not the focuser now.

The front of the reducer appears to be very slightly glossy.

[high aspen]

😭

[frosty shard]

You and me, buddy. You and me.

[high aspen]

thats so evil

[frosty shard]

Felt paper will fix the problem though

[high aspen]

fuzzy felt dinosaurs :D

best way to reduce light leak

[harsh matrix]

Nevermind it isnt slightly glossy

Its very glossy

[high aspen]

https://tenor.com/view/flash-cat-flash-flashed-cat-flashed-shocked-gif-13291102507716656194

i wanna cover my room in black felt

would be silly

[crisp flower]

Alternative color Palette since my Filterwheel died on me

Idk why but this Looks VERY different on the Phone compared to the pc

[frosty shard]

What palette?

[crisp flower]

Tbh im Not too Sure
I was a bot frustrated and played with Things until something popped Up that didnt Look too bad

I wanted to Take hargb but the Filterwheel only took ha and r so the disappointment was huge

[harsh matrix]

this wasnt an issue when i threaded the reducer onto the focuser but now that i have to put the reducer in the drawtube, it has become an issue

[high aspen]

those threads are shiny

[harsh matrix]

that's not the only problem

the front of the metal is too

all of that is glossy

[high aspen]

i just kinda counted that as the thread 😭

[frosty shard]

Ah, they may not have considered your particular use case...

[high aspen]

i like the way the coating adds loads of reflections like that

[digital nexus]

I get my RC6 on Friday

[frosty shard]

Man it's great to see that we have more RC enjoyers joining our ranks

[digital nexus]

yea we will see if I’m an enjoyer after I try using it

[stiff mason]

Ive had rain for 6 months straight i am not joking worst year ever

[scenic mist]

we've had worse

remember last year winter

[stiff mason]

Nah thats pretty much as bad as it got

[scenic mist]

not a lick of data

[stiff mason]

Its the one I'm talking about

[scenic mist]

oh bruh

[stiff mason]

Only got 1 usable night in December

Weather here is so bad I'm legit considering making my own remote observatory

[chrome kite]

and i thought 2 weeks was bad

[high aspen]

guys, guess how bad my rotation is

(i wont know until i stack the 2 sets)

[tight lodge]

180°

[high aspen]

hopefully

[tall summit]

Hey RC gang

curious, are you mostly shooting with the reducer, or native?

thinking about embracing 1370mm FL for more details and smaller targets, but F9 vs F6....

[frosty shard]

I'm shooting at native FL with my RC8

And that's with a small sensor (533)

Part of the reason I do that is just so I can avoid chromatic issues when imaging infrared

[tall summit]

Technically its suppossed to tighten up an image circle too (I think) in case of my aps-c. Do you own a reducer?

[frosty shard]

I do...but I have never used it lol

[tall summit]

Your 8" would absolutely murder with a reducer

[frosty shard]

It would save me some time...but I want every last bit of sharpness I can possibly muster out of my scope

[tall summit]

I hear ya

@frosty shard speaking of shapness, I just went through mirror cleaning and collimation. Does this look reasonably alligned to you? Defocused to get donuts

[frosty shard]

You probably want to use an aberration inspector to check. This is on-axis right? It's hard to tell

It looks good on-axis, but off-axis is what matters

[tall summit]

Yes, crop into around center (Capella)

[tall summit]

Thx, at least primary looks to be good then

[sinful sapphire]

id rather take the f2.8 hnt

[tall summit]

I actully have some cluster subs from last night I didnt transfer yet, I'll post in a few

[frosty shard]

There may be some slight coma biased towards the lower left, but I'm not sure if it's enough to make a noticeable impact on your image

[tall summit]

Ughh, upper right corner looks to be a bit flat. The rest seems to be reasonably round

[frosty shard]

Honestly, not terrible, but I get the desire to make some improvements

At least at my sensor size and native FL I'm not sure my collimation would be accurate at that effective distance from the optical axis

Still haven't denoised or deconvolved this data

[tall summit]

Yeah, I don't think I will to be chasing that corner. The pain of f@cking it all up and spending days to get back is too fresh:)

[high aspen]

@frosty shard

[frosty shard]

how much integration?

[high aspen]

i think its about 2.5

maybe less

im imaging directly into city glow so massive gradient :(

i love how starry the area is

0.5s exposures was too long tho

trails :(

heres w no compression

like no diff

[tall summit]

whats your setup?

[high aspen]

6" f5 noot + 0.9* cc

untracked

[tidal hearth]

UNTRACKED?

holy

[high aspen]

i thought i was close enough to the pole

[tall summit]

Pretty rad for untracked

[high aspen]

no, polaris

yk what i means

[high aspen]

some mf keeps trying to get me to denoise my images

how evil of them

(i did denoise with 0.3 modulation)

but with grax they want me to 😰

[frosty shard]

speaking of which, I'm almost done with some of the denoising code I'm writing

I could run you through how to use it

[high aspen]

sure

[frosty shard]

I have one last kink to work out and then I'll join one of the voice channels

[high aspen]

oki

[frosty shard]

@high aspen I'm in

[crisp flower]

Gave that one another go

[high aspen]

:D

wgat scope took this?

[crisp flower]

Rc8

[high aspen]

[crisp flower]

I have a tiny Problem with tilt which i am currently ignoring xD

Getting the Filterwheel working is Main priority rn

[high aspen]

xD

[harsh matrix]

@undone sedge I actually am down to hit you up for that M54 wanderer astro rotator

I am collecting my gear for Starfront

my final pieces

[undone sedge]

niceee

let me check how much i paid and i'll knock down the price a bit for ya

oh. okay agena

[harsh matrix]

WHAT

LOL?

Benny told me about a remote controllable power strip you can buy

so now im going to buy that instead of a power box because i dont really need a power box.

[undone sedge]

guess i'll check my email

[harsh matrix]

since I won't get a power box, i can get away with the 40% off on the 585 too

[undone sedge]

$350? (i'll pay for shipping)

[harsh matrix]

you will include everything it came with, too, right?

[undone sedge]

yes

[harsh matrix]

yeah that sounds good to me

[undone sedge]

cables n' stuff

[harsh matrix]

the catch is

I would like to wait 1 week

or till the end of this week i guess

[undone sedge]

yea that's fine

[harsh matrix]

i would like to cover it with my paycheck this week

i hate digging into savings

[undone sedge]

i will be out of town next week though so it'd have to be end of the week or the first week of december

[harsh matrix]

im going to order a Deep Sky Dad OFP2 rn

[harsh matrix]

yeah as long as we can figure out payment before then, I will be able to pay you by the end of the week.

[undone sedge]

neat

[undone sedge]

it was my vpn lmao

[harsh matrix]

might have a change of plans

looks like you can order the OFP2 through Starfront and they will install it for you

which means I may have the money available, just give me a sec for my insider to respond

[undone sedge]

oh cool

[harsh matrix]

nvm I got confused

Would still like to wait until the later half of the week

[undone sedge]

all good

[harsh matrix]

I'm excited to do this

this poor scope is so handicapped in my backyard

I dont even have a western horizon for any declinations lower than M31

😭

[harsh matrix]

@tight lodge I ordered a Deep Sky Dad OFP2

for one major reason

it opens like this

I can get a smaller pier at cheaper monthly cost if i get this

this flat panel, while expensive up front, saves me money in the long run

[digital nexus]

my ragdoll comes Thursday, RC6 comes Friday. perfection

My guiding resolution is 0.5". My RC6 resolution will be 0.56" . gonna be tough to do DSOs

[tall summit]

You never get theoretical resolution due to atmosphere

[frosty shard]

It appears my denoiser needs work...

[digital nexus]

yea exactly

but theyre so close it wont be good regardless

[harsh matrix]

[tall summit]

I have rc6, and I am guiding it with 120mm f4 scope (asi120mm), its fine

[frosty shard]

@high aspen just a warning not to do too many iterations with the denosier just yet, I gotta figure out why this happened

[digital nexus]

what guide scope

[tall summit]

sv165 mini guide scope

[digital nexus]

oh thats what i use. i thought it was f/5 so i was confused

ok well maybe il be fine

[tall summit]

what mount will it go on?

[digital nexus]

ragdoll 17 pro

[tall summit]

harmonic?

[digital nexus]

yea

i wont need any cws

[tall summit]

yeah, plus some future proffing for when you'll want RC8:)

[digital nexus]

yea il have this mount for a long, long time. its equivalent to an am5

[tall summit]

I am using celestron cg-4

[digital nexus]

i avoided celestron mounts like the plague

i never even heard of that, thats pretty cheap huh. Cheaper than my old GTI

[tall summit]

its all mechanical, I motorized it myself with OsStep kit

[digital nexus]

ah

[tall summit]

I would avoid their AVXs etc too

on a good day I get sub 0.5 with my maxed out payload

[dense quiver]

These flats panels are so nice but $4-500 for them is crazy

[harsh matrix]

Its a large up front cost but if I dont get it, I will have to upsize the pier and no more Starfront we go.

we got an even bigger problem now

they just greenlit the development of more farmland to my south, probably the last of what's in that part of the city.

light pollution in my south is about to get much worse

[frosty shard]

And that's why you surround yourself with some chad lakes that can't be colonized by light fixtures

[stiff mason]

Just put your telescope in a desert you can't build cities without access to water or farm lands

[harsh matrix]

that's where it's going, practically

the RC8

my others will still be handicapped here

[stiff mason]

How much is it at starfront

[harsh matrix]

$200/mo

for the pier I can get

you can pay as little as $150/mo if you have a redcat you want to send there

[stiff mason]

Wouldn't building your own place costs less

[harsh matrix]

where would I build it?

and it wont cost less to build an entire building instead

property tax gets insane here

[stiff mason]

Like buy land in the middle of the desert its not too expensive compared to other places

[harsh matrix]

like well over $1500/mo

[stiff mason]

Where do you live

[harsh matrix]

DFW metroplex in North Texas

[stiff mason]

Then how is property tax so expensive i mean from what i know a 5 acre land in Colorado would set you back about 6k but I'm talking pristine sky high altitude and low precipitation and from what i know the property tax is like 50 bucks a year not too sure on that i could be wrong

[harsh matrix]

Because

and you don't know this by the looks of things

Texas doesn't have income tax

but they have to get their money somehow

they get their money by cranking your property tax really high

the longer you live on/own a particular piece of land, the higher it gets

[stiff mason]

Damn

But like what about Colorado or nevada

[harsh matrix]

The land is cheap to buy up front, but it will be expsensive down the road.

[harsh matrix]

I am not going to build something that far away to where I can't go check on it in person on a semi-regular basis.

[stiff mason]

Fair but why do you need to check up on it on a regular basis

[harsh matrix]

because if for whatever reason a cable comes loose/detaches or a piece of equipment fails, i need it to be relatively accessible

and for two, i would like to see for myself that somebody didnt run off with my stuff

that's another reason why a place like Starfront is nice, you have a contract in the event of something like a break in and you have people there to maintain the gear

[stiff mason]

Yeah fair

[undone sedge]

i cringe whenever i see new development up here in the mountains

the sprawl keeps on sprawling

[harsh matrix]

yuppers

[harsh matrix]

how do you think I felt when our mayor greenlit more development about 6 months ago 💀

makes me want to pull every hair off of my head one by one

[undone sedge]

the atlanta metro is too big as it is

[tight lodge]

interesting design

[harsh matrix]

it is big brain

it saves space so you can get a cheaper pier

that flat panel is the only reason why i can afford Starfront

[tight lodge]

It technically takes just about as much a flip up flat pannel. But... hmmm

[harsh matrix]

yes but instead of folding outward, it just folds into the inside of the swing diameter of the scope

virtually nullifying the space it inhabits within the swing diameter

[tight lodge]

Speaking of that. I've seen someone in this server that got his gemini flat pannel to open fully at 270° instead of 200°. And ever since I've been messing with mine trying to figure out how he did it😂

Wait... hold on. It's not even 200° it's more like 170°

[undone sedge]

i have my wanderers open to 260

[harsh matrix]

wtf

[harsh matrix]

i had no idea you could do that with those

but theyre easily $50 more expensive than the OFP2

at the size that i need

[undone sedge]

yea so i'd imagine they wouldn't take up any more swing diameter - outside of opening/closing but i only do that at home anyway
and they open up too so

[tight lodge]

Ok... the gemini does have 270° of travel but apparently the drivers on their website are wrong🫠

[harsh matrix]

yeah

the drivers for their AF on their website are also wrong

[tight lodge]

Awesome.

[harsh matrix]

you cant configure the limits, direction, temperature control, or position with the drivers there

[undone sedge]

(see:)

[harsh matrix]

okay putting it that way sounds like you have some control

you dont get any control with the drivers on their site

[tight lodge]

Yeah... the drivers on their website are the lite version

[harsh matrix]

stupid

why

💀

[tight lodge]

For obvious reasons, I'm not gonna go for wanderer astro. A 150mm flat pannel is already too expensive, if I get a 10" newt, it will cost me an arm and a leg to get the 270mm one💀

[harsh matrix]

exactly

[tight lodge]

Buuut. Since the Svbony powerbox likes to detonate on people, probably I will go for the wanderer astro one. Although I don't really need a powerbox😅

[harsh matrix]

I was going to get that

however

Benny linked me something that's much cheaper which would achieve the same results

actually he told me about it

i found it

he said a LOT of people use these at SF

[tight lodge]

I was referring to the powerboxes that have the 2155 barrel plugs 😅

[harsh matrix]

I know

[tight lodge]

And for dew heaters. That's why I'm developing one that measures the temperature of the mirrors and compares it to the ambiental temperature and humidity. That way you just power it up and forget about it

[high aspen]

lmaooooo

[high aspen]

i see, ill have to avoid that 😭

i can also say that theres no noise in that image!!!

(exept at the edges)

[tight lodge]

He took your spot when it comes to ugly stars😂

[tight lodge]

Speaking of starfront. Imagine all the rigs at starfront shooting the same target all at once

[frosty shard]

Alright, this is actually kinda interesting because every star is appearing to be approximately the same size after this excessive number of iterations

[tight lodge]

[frosty shard]

Well this kinda implies that I'm able to detect stars with this denoiser, which is not the intended effect, but it's interesting

[tight lodge]

Why not use a denoise tool like everyone else?😅

[frosty shard]

Writing a denoiser is the fun part

Especially when you're not able to collect any new data due to weather

[tight lodge]

Join the radioastronomy gang😂

[harsh matrix]

another reason i forgot about is that my scope needs collimation every so often lol

that means i absolutely cannot leave it unattended for long

[stiff mason]

Autocollimator

[harsh matrix]

lol

I can't exactly just pull one of those out of thin air

like my scope would be compatible in the first place 💀

[stiff mason]

Or better yet get a AO system with deformable mirrors those can fix every aberration and fix atmospheric seeing

[tight lodge]

Autocolimators don't move your mirrors
They use optical interference to tell you if your telescope or lens or whatever is collimated properly

[harsh matrix]

that too

it's deceptive naming

[tight lodge]

It is

[stiff mason]

I mean proper stepper motor auto collimator

[tight lodge]

I'd call them mirror actuators😅

[stiff mason]

Oh right yeah

[harsh matrix]

if such a thing was designed for consumer RC's at a reasonable price, that would be a miracle

I have not heard of somebody making such a thing though

[tight lodge]

For a newtonian, it would be quite easy

[stiff mason]

Indeed i was thinking of making one

But I'm not bothered enough to do it

[tight lodge]

Since you can completely redesign the mirrorcell to accommodate such mechanism and you could actuate the whole secondary spider to adjust the secondary mirror. However, coming up with a system that is precise enough for such fine adjustments would be a pain in the... uuuhm... barlow

[harsh matrix]

well

make a design

create the pieces

I will install it on my quatt

I hate collimating that thing

[tight lodge]

[stiff mason]

Tbh with my quatt i can never tell wether I'm out of collimation or not its a pain

[tight lodge]

The main issue I'm having is always the software. I hate that. I can't figure them out

[harsh matrix]

that's my primary concern tbh

I dont know what software would work and how well it works

[stiff mason]

It could be that I'm out of collimation and thats what's causing the wierd stars it could be the mount it could be the backfocus on the coma corrector or it could just be the stacking software

[tight lodge]

Like, could probably figure ut something kinda manual. But nothing automated

[stiff mason]

Probably something like a custom one step setup with a custom script

[tight lodge]

Yeah... but you still need an algorithm that would intentionally defocus the telescope, identify the shape of the unfocused star, then compare it to a reference aaaand figure out the necessary adjustments

[stiff mason]

Yup

Some guy actually already made that

Its like a youtube video about making an auto collimator

[harsh matrix]

https://agenaastro.com/pegasus-astro-m54x0-75-male-to-m54x0-75-male-with-internal-m48x0-75-female-thread-adapter-peg-adapt-m54m-m54m.html?qty=1

gonna need one of these

https://agenaastro.com/wandererastro-m54-male-to-m54-male-adapter.html

there's this one for M54 rotators specifically for Wanderer Astro rotators but the description says M54x1 threads on both sides when the Wanderer Astro Rotator schematics show M54x0.75 on both sides

[harsh matrix]

I was thinking Starfront is a 5 hour drive

Nope

It's only 3 and a half hours away

[tight lodge]

[digital nexus]

At that distance you better be driving your rig there not shipping lol

[stiff mason]

Lucky

[digital nexus]

Omw to starfront

[harsh matrix]

I am

[frosty shard]

@tight lodge @harsh matrix (really anyone who uses NINA) do you use the Sequencer Powerups extension

[harsh matrix]

nope

[frosty shard]

No specific question or anything, I just discovered it and it looks extremely powerful

Probably useful for automating mosaics

Among many, many other things

[harsh matrix]

@frosty shard somebody is using their Carbonstar RC8 on an AM3 and theyre getting 0.41" RMS

[oblique sun]

Like 30hrs for me

[tight lodge]

I call it a lie. Especially if he gets those values with a piggyback guidescope

[harsh matrix]

omg it is a piggyback

i didnt see that

guess what

it's a 30 mm too

so it's really not going to be accurate

[tight lodge]

I had no clue what rig you was talking about... but I nailed it

[tight lodge]

Most likely diffraction limited

[harsh matrix]

nah i always forget that not everyone uses an OAG

💀

[tight lodge]

Shame

[frosty shard]

With or without a counterweight

[harsh matrix]

with counterweight

lmao

that was the second thing i checked

i was like, wait how is this guy using this tiny thing if he doesnt have a counterweight, and then i saw it

[fringe delta]

my am3 didn't like my carbonstar 150

[quartz meadow]

even with a counterweight?

[fringe delta]

uh, without

i think

i put the counterweight on it and it was fine

i didn't have a bar for it at first

that was like a year ago

[quartz meadow]

gosh that sounds horrendous

[harsh matrix]

i would have not kept doing that to the poor mount

[fringe delta]

had to make sure i got the sound on video

i have an am5 now, but still use the counterweight lol, for better guiding

[harsh matrix]

yeah normally I run the counterweight too just for the better guiding performance.

[high aspen]

slight overstrech

buh

pink deep cyan is not noise friendly

[high aspen]

if you dont zoom in nothing looks wrong

[frosty shard]

did you use my TGVDenoise implementation for this

[high aspen]

no

[high aspen]

3x3 median filter at 10 itterations

• sirils denoise

[harsh matrix]

Once I have all of my stuff together, I am going to have to rig the RC8 up and test it all out.

I think for that test, what I am going to do is I am going to lucky image M42's core.

Then I will most likely get some longer exposure data to fill out the fainter parts.

[tight lodge]

Always use the counter weigth. No matter if you are within the unbalanced payload range😭

[harsh matrix]

NGC 891 turned out great despite the challenges

screw light pollution

[frosty shard]

I paid for counterweight free mount capability and I'm gonna use it

[harsh matrix]

honestly a carbon tube RC8 weighs very little, even when loaded

i wouldnt bother with a counterweight if i was using a 150i or a UMi 20S

[stiff mason]

Same

[stiff mason]

Bro called me poor 😭

[tight lodge]

Can you lift your fully assembled rig?

[frosty shard]

Yes.

[tight lodge]

Then why do you need the cart to carry the rig?

[frosty shard]

Do you know what it's like to slam your optical tube or image train into a door or wall?

I don't

and I intend to never know

[tight lodge]

Sooo... it makes transportation easier. That's what a counterweight does on harmonic mounts

[high aspen]

i do!!!!

[oblique sun]

same!!!!

[tight lodge]

@harsh matrix The difference between flocked and deflocked secondary spider is absolutely insane
I gotta deflock mine asap

@frosty shard @harsh matrix I figured out why we all get this artifact in our flat frames. Apparently if the flatframe is too close to the telescope, it can create this effect because the light rays are not parallel enough

[digital nexus]

I thought flocked was good

[tight lodge]

It is. But the diffraction spikes are not as pretty

[digital nexus]

So my mount arrives today

And the RC6 tomorrow

Looks like it’ll be clear Saturday too. I’m not sure if I want to try my new mount with my Askar 71f first, or the RC6

Probably smarter to do my 71f since I know there’s nothing wrong with it, an itll be easier to setup

[quartz meadow]

oh yeah totally

[digital nexus]

Can someone walk me through the DSI method?

Like the steps

That doc too long

[digital nexus]

Would I be able to collimate inside somehow? So I can get it done before trying to image

[tidal hearth]

Is this a good one?`would get this after my askar 103

@tight lodge

[tight lodge]

You will have to replace the focuser

As for the optics, I'd say is 1:1 with apertura

[crisp flower]

This Looks exactly Like my omegon one, except the color of the tubus

[sinful sapphire]

yeah theyre all the exact same

all just a GSO recolour basically

[crisp flower]

Yea

[sinful sapphire]

whats the problem with the stock focusser

[high aspen]

tilty wilty :(

[digital nexus]

Why is gso so ugly

white tube is soo bad

[quartz meadow]

they love to add some extra flex after the price tag

[tall summit]

Here is the summary of it. For primary Tighten the primary pull screw corresponding to the bright side of the image.
For secondary: Tighten the secondary pull screw corresponding to the flat stars

[digital nexus]

I asked Gemini to summarize it in steps. Did pretty good

[tall summit]

primary is adjusted on-axis, until de-focused star is universally bright/round

secondary is adjusted by looking at corners

[digital nexus]

I’m hoping I won’t need to adjust the primary

[quartz meadow]

think there's no way around that

[high aspen]

silly :3

[tall summit]

I didnt come up with it:)

[tall summit]

@digital nexus just dont try collimating using laser

[digital nexus]

I know

Although you can use SCT lasers

[tall summit]

I built myself this device, pretty much an OCAL clone. Works amazingly for initial/mechanical alligment, gets me within one or two DSI iterations

[high aspen]

not as good

[digital nexus]

What is that

I can use my 533 for the DSI method right?

[tall summit]

Its an alignment tool you would use before going for a star test, gets you pretty close so that DSI turns more into a fine tuning. You mount it instead of your cam, and can get views like this to get things mechanically aligned:

[stiff mason]

What is flocked

[digital nexus]

Basically coated black

Prevents reflection

[tall summit]

@digital nexus When do you expect to receive it?

[high aspen]

just half flock the spoobles!!!!

[stiff mason]

Ah

[digital nexus]

To revive what

I’m receiving 2 things today and tomorrow

Ragdoll today - should be like now
RC6 tomorrow

[tall summit]

Hang on, people flock their secondary spiders?

[high aspen]

its a fluffy black

[stiff mason]

Yeah I'm gonna need to do that to my scope as well

[stiff mason]

Yeah I'm gonna need to do that to my scope as well

[high aspen]

dubble sent

[digital nexus]

Can’t wait to get the RC

[high aspen]

[frosty shard]

I think he's deflocked his spider to make the spikes stronger

[tall summit]

When are you expecting it

[digital nexus]

Tomorrow

[high aspen]

rc hater

[digital nexus]

[frosty shard]

lmao whomst'd've done this

[high aspen]

this data was never meant to be reprocessed

im traumatized

ah yes

much better

@frosty shard look at this snr!!!

[frosty shard]

You can get better SNR if you bin all your pixels

[high aspen]

[high aspen]

i binned it passed 1 pixel and siril crashed 😭

[harsh matrix]

told you

[frosty shard]

If the OTA has the same linear bearing Crayford as the Apertura ones, it's not horrible, but I'd rather use the rack and pinion upgrade for imaging.

[frosty shard]

Do you know how the spider is being deflocked?

[tight lodge]

I peel the flocking from it

[frosty shard]

I would highly recommend not messing with the collimation until you actually evaluate it under the stars. Lots of people screw up collimation that way

[frosty shard]

What does the spider look like without the flocking?

I'd like a reversible deflocking for my scope, so if I can deflock with reflective stickers that would be great

[frosty shard]

Also, I'm slightly skeptical of this, because if this was the case, your flats would have fewer problems than ours since your tube is longer

Well, it might be mitigated in our case by greater baffling that limits the effect of the more divergent rays

[tight lodge]

I'm suspecting that it has something to do with the CO in general

[frosty shard]

Is your OTA baffled?

[tight lodge]

No

[high aspen]

:(

thats baffling

-# (get it?)

[frosty shard]

Makes sense because my data calibrates just fine with the reflection issue fixed

[tall summit]

Looking to upgrade my sv165 30mm F4 guide scope (used with asi120mm cam). Trying to decide whether I should I be going for a bigger scope (like 50-60mm with 200-240mm FL) , or off-axis guider?

will be keeping the same camera

[tight lodge]

The only time I have issues is when I try to take Flats for NB filters

[tight lodge]

OAG. And you will never worry about guiding

[tall summit]

Is the issue of not getting enough stars real?

[tight lodge]

Depends.

[frosty shard]

It might be, depending on your imaging interests

When I image emission nebulae along the Milky Way, guide stars are easy

Galaxies far from the Milky Way are the challenge

[tall summit]

thats what i was wondering about

but your FL is longer

[frosty shard]

And you're using a reducer right

[tall summit]

in am at ~925mm with the reducer

[frosty shard]

That makes it easier

I would still recommend the OAG just in case you have flexure issues since it's just not possible to have them with one

[tall summit]

I was thinking from more of a imaging scale perspective, primary vs guide scope FL ratio. It should be up to 5:1, right? There are 60mm F4 scopes out there

I think my current guide scope fl is to small at 120mm

[high aspen]

you can put the guidescope lens before the guidecam to act as a reducer

[frosty shard]

It would be better to have a longer focal length if you want to stick with a guide scope, yeah (though I have only ever used an OAG)

[tall summit]

it's silly, but it also acts as a counterweight for my back-heavy setup

[frosty shard]

I got the same problem lol

What kind of mount do you have

[tall summit]

Celestron CG-4 with Onstep

very much maxed out:)

[frosty shard]

Ah with a strain wave mount the imbalance does reduce performance a bit but it does not pose a risk

[tall summit]

I am still amazed that its able to handle the load

[high aspen]

same tbh

[frosty shard]

So...I think I might oneshot that 16 panel mosaic of Andromeda tomorrow night

[silver ibex]

@frosty shard 10" RC closed tube for 1500€, what do you think?

I already messaged the guy but he has yet to answer

GSO of course

[frosty shard]

GET THAT

[harsh matrix]

Steal

Royal steal

Grab it

[silver ibex]

If he answers

And ofc I'm going to lowball that shit

[digital nexus]

Who uses a guide scope on their RC?

[frosty shard]

Only @tall summit does AFAIK

[digital nexus]

if i do, do i only need to worry about flexture or whatever?

cause im not sure about an OAG

[frosty shard]

Not sure about what

[frosty shard]

Flexure is the main consideration

[digital nexus]

the weight

and using it. seems complicated. guide scope is easy and simple

[frosty shard]

I'm pretty sure an OAG is going to be lighter than any guide scope

[digital nexus]

im considered about the weight on the focuser

my mount can handle the extra weight

[frosty shard]

With the upgraded focuser it really will not be a big deal

I've had no issues with the stock Crayford or the upgraded rack and pinion focuser

[frosty shard]

I cannot say myself just because I've only ever used an OAG, but I hear a lot of people describe OAGs as easier/simpler than guide scopes, since they're integrated into the imaging train

[digital nexus]

well i thought it was cause its coupled

[frosty shard]

You're using an OSC camera right? I've been using a full mono imaging train (OAG, filter wheel with 8 1.25" filters, cooled IMX533) and have not seen any issues that arise from coupling (miscollimation when the azimuth changes, for instance)

Now I do have a later RC so perhaps there have been undocumented changes to the mirror cell

But you'll have a relatively light imaging train

I was actually worried about the same thing when I got mine

[digital nexus]

thats funny cause i hear the opposite lol

[harsh matrix]

OAG is gonna weigh less than a guide scope of sufficient size lol

[harsh matrix]

That upgraded focuser will have no issue

[harsh matrix]

If anything, the fact that it's coupled means you want an OAG even more than if it wasn't.

The thing is, flexture arises from a desync between the imaging camera and the guide camera.

[digital nexus]

There’s a NINA plugin that can correct that apparently

And can’t you adjust the guide scope for flexture?

[harsh matrix]

That's made worse if/when the imaging camera experiences any degree of "mirror flop"

[harsh matrix]

You can try to attach it more rigidly but ultimately you will be limited by the size of the guide scope.

Your RMS will likely look good but your images will be pretty blurry

Because there is a guarantee that your small guide scope will not perceive subtle movements by the mount that your imaging camera will see.

[digital nexus]

I bought a new guide scope

I’m not that insane to put a 30mm guide scope on the rc6 lol

I’ve been warned by Proxisky mount owners and the man himself to not use a 30mm guide scope with the Ragdoll. So I figured I’d buy a 60mm guide scope

I’m going to test the 30mm and 60mm see how it’ll affect guiding

[harsh matrix]

How much focal length does it have

Thats a lot more promising.

You want to find some way to get the guide scope attached that doesn't involve a single attachment point.

Say a finder shoe with a single thumb screw

[digital nexus]

240mm

[harsh matrix]

That might work.

You may want to bolt the guide scope directly to the top dovetail if possible.

Oh BTW, does that guide scope use a set of rings?

[digital nexus]

Yea

[harsh matrix]

Or is it rigidly attached

[harsh matrix]

That's another potential point of flexture.

[harsh matrix]

That's not a great type to use.

[digital nexus]

why not

[harsh matrix]

Like I said above, those rings will cause flexture

Theyre a failure point in the rigidity of the guide set up

[digital nexus]

There’s a plugin on NINA that might help

Flexure Correction

Oh it was abandoned. Now it’s Flexure Compensator

https://github.com/michelegz/nina.plugin.flexurecompensator

[harsh matrix]

You are completely on your own if you give that a shot

I can't entirely recommend it.

Worst case, you learn the hard way.

[digital nexus]

Experimentation is good

[digital nexus]

Do you think I could use those rings and screw them into a vixen bar?

[harsh matrix]

Probably

[oblique sun]

I have it

They are rigid

[harsh matrix]

Something I wish I did with my RC6 was get a losmandy dovetail to attach it to my mount more securely.

[oblique sun]

The issue is the camera end tube

This thing is super wobbly

[harsh matrix]

Whooptie told me multiple times that they are not.

[harsh matrix]

Ah well

That would do it too

[digital nexus]

so what should I do

don’t have the money for a good OAG

[harsh matrix]

What if you jam it with electrical tape

[oblique sun]

Just went to feel mine again

Zero wobble at the rings, actually not a lot of wobble at the camera side tube but still easily noticeable

Was remembering it as worse than it is

[digital nexus]

tape it

[oblique sun]

also the helical focuser it has is very weird to use

[digital nexus]

huh

Why

Helicopters

[oblique sun]

autocorrect

[oblique sun]

sometimes when i turn it the whole tube twists, other times it works fine

but either way it is much better than my skywatcher heritage focuser was

Anything is though

[digital nexus]

don’t have to tell me twice lmao

[oblique sun]

I have some images with it if you want

It used to be my imaging scope

[digital nexus]

Il be using the rc6 for planetary instead of the heritage

[oblique sun]

Ik i mean the sv106

[digital nexus]

what

You imaged with it??

[oblique sun]

painfully yes

[digital nexus]

Send now

There’s no way that was any good

[oblique sun]

abberations are worse than an sv48p

[oblique sun]

oh i never said it was good, very much the opposite

lemme find some

all of them are like 2 minute processes btw i never spent much time processing or put much int time into any of these

heres one

[harsh matrix]

Also you guys dont seem to be aware of how much flex needs to happen before a desync in guiding and the imaging camera occurs.

It's on the order of 1 or 2 microns

Something that feels solid and looks solid by eye can easily move that much without you being able to tell.

That's why something like a finder shoe to attach a guide scope on a high focal length imaging system is inadvisable.

Doesn't matter how tight you make the tbumbscrew or screws, it will still move.

That small of a movement is only noticable because of the focal length of the main scope.

[oblique sun]

in the full moon, incase you wanted more painful images callo

[harsh matrix]

To make matters worse, the effects of this desync are made even worse when you can't align the guide scope to the same position in the sky as the main scope/camera, which is not unlikely in this scenario.

[oblique sun]

you can

its pretty easy with the rings

[harsh matrix]

maybe

[oblique sun]

didnt know it was that precise but i did know the sv106 wobble was way too much anyways

[harsh matrix]

Well, it is.

To have a guide scope suspended in rings like that, makes it really easy to hit that margin.

[oblique sun]

i havent seen what whooptie said about his but for me the rings have never been the issue

[harsh matrix]

Cause he mostly talks in broken biscuits

That's where he has yelled at me several times before for using a guide scope at all.

[oblique sun]

he would drop dead if he saw that i used to image with it

[oblique sun]

mine has a single attetchment point lmao

[oblique sun]

exactly this

but i dont have any other option

[harsh matrix]

[digital nexus]

so what should I do

cancel the guide scope order?

Use my 30mm?

I can’t afford an OAG

[harsh matrix]

If i were to guide with a guide scope mainly, id get one that doesnt use rings, and bolt it straight to the dovetail on the top of my scope

[oblique sun]

wdym bolt it to the dovetail on top of the scope

[harsh matrix]

I got a dovetail on the top of my RC

Just about all closed tube RC's do

[oblique sun]

Oh right

[harsh matrix]

I was going to say ask Nokk what he is using but he has an OAG as well.

See if you can get any body to recommend a better made guide scope

50 to 60 mm

Preferably 200 mm or more in focal length.

240 mm is about 5.77x worse than the RC

It would be best if you can get more but this is a place that a tight budget is unforgiving in.

[oblique sun]

maybe just use the 71f until you do have the money for an oag

[digital nexus]

I’m being told the ragdoll needs a larger guide scope than 30 to get decent guiding

What’s the best cheap oag

[harsh matrix]

I used the ZWO OAG

The small one

For a while

I think that's the cheapest possible one

You can try to secure one used though

They go for super cheap, second hand

[digital nexus]

https://agenaastro.com/zwo-oag-off-axis-guider.html

This one?

someone in my Astro club said he’d give me one with an upgraded focuser

[harsh matrix]

Yes

[harsh matrix]

Hit em up

[digital nexus]

Yea someone in my Astro club upgraded his OAG since it wouldn’t fit his CAA I guess.

Due to my schedule it’s hard to meet unfortunately

Our club has a star party Saturday where he said he could give it to me. Of course I work

[harsh matrix]

He's not going to try to make you buy it off him?

Also yeah that OAG wont work with a rotator lol

Makes sense that he cant use it

[digital nexus]

no free

he’s nice

He’s the one who sold me the 533mc pro, filter drawer, and l-enhance for $450

[harsh matrix]

Clutch

It's definitely not the best OAG just because the prism is small but it is robust and gets the job done

The nice thing is

You can expose for as long as you want with an OAG

So long as your guide settings are good for your mount.

[undone sedge]

i loathed this oag when i had it

tilt central

[digital nexus]

well free is free

I have a tilt plate

idk how to use it

but i got one

@harsh matrix will messing with the tilt plate make me need to redo collimation

[harsh matrix]

Yes unfortunately

Honestly if that focuser uses set screws or a compression ring to secure the camera, that will induce some level of tilt and collimation error on its own.

So unless you see a consistent amount of tilt in a consistent direction, I wouldnt touch it.

Its way too much of a headache because you cant set it once and forget about it.

[tall summit]

Wow, I missed a lot:)

@digital nexus thats funny, I actually placed an order for 60mm f4 guide scope on ebay today

Currently using 30mm f4, but running my rc6 with a reducer

[tight lodge]

Have you considered the diffraction limit of that guidescope?

[tidal hearth]

Sounds Like touptek 533 Set to me 😉

[tidal hearth]

Get a guidescope from touptek 🤣 200+mm

https://www.touptekastro.com/de-eu/products/gs-papo-guide-scope?variant=51309823066424

[high aspen]

this is the best guidescope

[high aspen]

what the helly

[frosty shard]

Day ω of asking GSO to make a 4.5" RC

I would buy one instantly if it dropped, financial consequences be damned

@harsh matrix maybe we were wrong about "CO" modulation...is it caused by the baffles?

[tight lodge]

I don't have baffles.

[harsh matrix]

no

I get it on my quattro to

that doesnt have baffles

also keyword at the very top there

"Fast"

RC's aren't fast

[tight lodge]

Add the CO plus the circular aperture, and you get rings

[frosty shard]

hmm it's 3 AM maybe I should either read or sleep

[tight lodge]

Why his stars are so elongated? 💀

[harsh matrix]

coma

[tight lodge]

Then I consider the results null

[high aspen]

ÒωÓ

[tight lodge]

https://www.astroshop.de/teleskope/omegon-cassegrain-teleskop-pro-cc-114-1368-ota/p,80953?p_id=80953&utm_medium=cpc&utm_term=80953&utm_campaign=2511&ia-pkpmtrack=31-9353835313236323131303-106-103-39271&utm_source=froogle&ptype=de&gad_source=1&gad_campaignid=21127088820&gbraid=0AAAAAqwBKDrdbD0_zS1rKbNjFuJGhpasY&gclid=CjwKCAiAuIDJBhBoEiwAxhgyFjg_sxe3HtAUTqJV0rLR80SRjdyAyItuBoh3MuqIUncV4ertEqAawhoC6CUQAvD_BwE&utm_content=
I'm quite sure this is a GSO😂

[tight lodge]

GSO

[crisp flower]

I got them on my sct as Well and it also didnt have baffles

[oblique sun]

that is why you do not image with an $80 guidescope

[high aspen]

my guidescope chipper and takes better images >:3

[high aspen]

that a classy cassy

[tight lodge]

And the RCT isn't a cassegrain?

[high aspen]

looks airydisk

[high aspen]

theres a humungus diff between a cc and an rct :/

[tight lodge]

Yeah... but their similarities are that both of them are cassegrain designs

[silver ibex]

Telescopi Italiani is apparently extremely peak

And also extremely pricy

[tight lodge]

A higher price does no necessarily mean higher quality.
-ZWO

[sinful sapphire]

soo

you are saying

that

anyone who wants an RC8

might aswell get a C8

because theyre both cassegrains?

🗿

[tight lodge]

Well... the C8 is a Schmidt Cassegrain. Big hunk of glass in front. But the difference between Classical cassegrain and RCT is quite small. Different mirror designs if I recall correctly

The C8 uses spherical mirrors which is the yackiest thing ever.
Classical cassegrain uses a combination of parabolic and hyperbolic
And the RCT uses Hyperbolic mirrors. So the difference between the Classical cassegrain and RCT is the secondary mirror.

[sinful sapphire]

classic cassegrains have a parabolic primary

[tight lodge]

Yes

[sinful sapphire]

and a hyperbolic secondary

[tight lodge]

That's why I said Parabolic and Hyperbolic in that sequence

[sinful sapphire]

... yeah so the difference is the primary

you said its the secondary lol

[tight lodge]

Ah... my bad

Got confused for a sec. 🤣

We all make mistakes

[sinful sapphire]

RC Hater?

callo...

https://tenor.com/view/gus-explain-gif-26611114

[digital nexus]

@harsh matrix @frosty shard

the rc I bought comes with a tri bahtinov mask with a partial mask for Collimation. Does that work with the DSI method? What’s it do

[digital nexus]

https://tenor.com/view/trump-trolling-gif-6814738114905592679

[digital nexus]

It has arrived

[high aspen]

jee ess oo

[digital nexus]

Got a cobweb inside

Little dirty; gonna have to clean it up

[fringe delta]

free diffraction spikes

[bleak solar]

Gonna look sick on images

[high aspen]

@frosty shard geem ir onion

[tight lodge]

Finally able to image after so much time 😭

[high aspen]

oopd

[oblique sun]

smaller and slower probably

[high aspen]

its 4f

but its only 40mm

[oblique sun]

mines f4 y0mm

60mm

[frosty shard]

It's a lanthanide?

[oblique sun]

What

[high aspen]

landslide????

[frosty shard]

Lanthanides have unfilled 4f orbitals

[high aspen]

ahh

[tall summit]

how is the weather outlook in your parts?:)

[digital nexus]

semi clear tomorrow

And Sunday

[tall summit]

thats nice, there is nothing worse than not being able to use your new gear

I had to wait over a week when I got my 2600MC to take it out

[digital nexus]

I’m not using the rc6 tomorrow

Not smart

[frosty shard]

Smart move. Then it'll only cloud up the night you actually plan to take it out

[digital nexus]

Well I have no idea how guiding will be on the ragdoll

And il be using a 30mm guide scope.

[tall summit]

It works for me on my inferior mount

[digital nexus]

I’ve been told it’s not enough with the ragdoll

[tall summit]

that I dont know

I ordered 60mm F4 guide scope. So technically I should be expecting worse guiding numbers now, with doubling the FL to 240mm?

[digital nexus]

What? Why

With an RC? More FL will help

[tight lodge]

@harsh matrix The 130PDS is back in business

[tall summit]

I might be wrong, but I thought that as you increase FL you also increase a demand on a mount precision

[digital nexus]

Not for guiding

Guiding needs more FL if your main scope has a lot

[high aspen]

@frosty shard f4 class cass

its a 6" as well

xD

[frosty shard]

spell "coma"

an f/4 RC might not be terrible tbh

[high aspen]

its only terrible

[tall summit]

good to know, I thought it applies to guiding as well

[high aspen]

i made a "coma corrector" but now its got some suspicious shaped aberation

heres with it focused better

[frosty shard]

That suspicious shaped aberration appears to be...more coma

[high aspen]

massive barlow

[high aspen]

heres an f2 rct

i cba to figure out how to use the fixer tool with mirrors lol

amazing

[stiff mason]

I love when that happens

[high aspen]

its so kind

[digital nexus]

How do I find backfocus

[tight lodge]

You read the instructions for your coma corrector of field flattener, and you combine adapters to reach that length. In most cases is just 55mm backfocus for most coma correctors and field flatteners

[digital nexus]

ok that doesn’t help

I don’t have either of those

[tight lodge]

Then what do you need backfocus for?

[digital nexus]

To reach focus?

I don’t know how backfocus works: I bought a petzval to avoid it. And now I have this rc6

[tall summit]

If you dont use reducer, you dont worry about backfocus length

[digital nexus]

Don’t I need to reach 149.5mm or something

Is this normal for a tilt plate?

[tall summit]

This is all you got? Didnt come with these?