Ritchey–Chrétien enjoyers thread

[stiff mason]

Nah i hate it

It's trash

Jk

It's probably one of the best designs considering it can correct for a large FOV

Without requiring several mirrors

[slate falcon]

the 2 surfaces of a lens lets you make a corrections like how 2 mirrors would

[stiff mason]

Ohhh

I get it now

[frosty shard]

can you design an aplanatic single lens for a single wavelength?

[slate falcon]

i think so yes

do you want me to try tomorow

[frosty shard]

Oh sure

[stiff mason]

Wait a minute you were being sarcastic man get out of here

[slate falcon]

no :(

why would i be sarcastic :(

is the unid annoyed at me :(

[slate falcon]

buh

[stiff mason]

What no

Man i cant be everywhere at once

[slate falcon]

:(

[frosty shard]

I would guess you could do it with hyperbolic surfaces like a Ritchey–Chrétien

[slate falcon]

twas tha plan

[frosty shard]

Or you could do it with ellipsoidal surfaces like an aplanatic Gregorian

[slate falcon]

hamd grinding a lens

[slate falcon]

ill try both

[slate falcon]

i killed an svbonr uv ir cut for this

[frosty shard]

For all I know it may require a more complicated choice of curvatures

[slate falcon]

ill try watever i can throw at it tbh

[frosty shard]

Oh but there are several papers about this problem so I guess it's doable

[slate falcon]

silly

[frosty shard]

https://www.researchgate.net/profile/Rafael-G-Gonzalez-Acuna/publication/341410718_Analytic_aplanatic_singlet_lens_setting_and_design_for_three-point_objects_and_images_in_the_meridional_plane/links/5ef3a92d92851c35353f981e/Analytic-aplanatic-singlet-lens-setting-and-design-for-three-point-objects-and-images-in-the-meridional-plane.pdf?__cf_chl_tk=iEpfbtt2T8CD95WT0hl2zgGK9Z8EV.GKTqQqwEqrp5o-1779409323-1.0.1.1-n7V5YEIcYcJwnX2Nn_A4OcZXHCyI_dAB.F.qJSeGslU

[stiff mason]

Why f30 btw

[worldly bolt]

Holy yapp thread

[stiff mason]

My fault G

We should rename the threat to including just nerdy discussion

[frosty flicker]

[slate falcon]

singlet

[harsh matrix]

oh god

[stiff mason]

Oh what would happen if you did like f4 would it just be a rainbow or something

[stiff mason]

I hope it's not a virus

[frosty flicker]

its not

its litterally a pdf file

whats a pdf gonna do

[stiff mason]

I was joking

[frosty shard]

So, would anyone like to talk about the glorious Ritchey–Chrétien?

[tight lodge]

Yes absolutely, I want one and I don't want one at the same time

[frosty flicker]

cdk

[sinful sapphire]

rc btw

[frosty flicker]

cdk

[tight lodge]

Newtonian

[sinful sapphire]

Ritchey-Crouton

[frosty flicker]

Refractors

[harsh matrix]

vile

blasphemy

[frosty flicker]

this meme defines this channel

[tight lodge]

Yummy

[sinful sapphire]

Ritchey-Croissant

[tight lodge]

[frosty shard]

Sorry dude it's this one

[tight lodge]

By what standards?

[sinful sapphire]

Ah yes we love refractors with spherochromatism

[tight lodge]

Fracs are great

||as long as you are under heavy copium pills||

[sinful sapphire]

Who are you

[tight lodge]

I'm me

[tight lodge]

@sinful sapphire

[tight lodge]

Sthaaap you making me nauseous

[harsh matrix]

@tight lodge now can you resolve the star clusters being ejected from M51?

[tight lodge]

Some of them

[harsh matrix]

I see a grand total of about 2 there.

[tight lodge]

2 is more than 0

Also, I think I got in total the same amount of integration that you got for one color filter. So it's not apples to apples😂

[harsh matrix]

My M51 project is on another level ngl.

This one has blown my mind.

[tight lodge]

Yeah, I really wish I could do a big project
I know the OTA has potential, you know it... everyone knows it. Damn weather is horrible 😭

[crisp flower]

last night was fine here, wasnt it for u?

[harsh matrix]

Time to move

[tight lodge]

Where

[harsh matrix]

Italy

[crisp flower]

la palma

[harsh matrix]

[tight lodge]

Cloudy. But even then... I still can't image during work days

[crisp flower]

tonight looks promising as well i think

or do saturdays count as work days for u

[tight lodge]

Depends how beat up I am after gym

[crisp flower]

priorities

i think ill do an all nighter to make sure my scope stays on target this time

[sinful sapphire]

then build a roll-off roof maybe

so you can automate more easily making imaging on work days possible

[tight lodge]

I rent, I don't own.

[sinful sapphire]

[tight lodge]

I do have something planned that might actually work. And that's to buy a patch of land from my parents and build a remote observatory there

[quartz meadow]

is that like in the middle of nowhere?

[tight lodge]

Yes'nt

[sinful sapphire]

Smart

[tight lodge]

It's a rural area. B4/b5 maybe

[quartz meadow]

would've guessed suburban

[tight lodge]

Rural area

[crisp flower]

might be a fairly good idea ngl, depending on much far u would have to travel in order to do maintainance things around the area/scope

[tight lodge]

About... 2200km

So yeah... a million things have to go right😭

[oblique sun]

a what total?

[tight lodge]

Star clusters

[slate falcon]

no :(

gregs on the other hand 😏

[frosty shard]

#1506685819241631754

[slate falcon]

greggy eggy

https://tenor.com/view/cat-cat-shaking-head-fisheye-lens-gif-25374523

[tight lodge]

I thought we agreed on CHAD😭

[slate falcon]

they are just regular greggssss

not the silly 3 mirror greg

[tight lodge]

@slate falcon I had a giant brain idea

[slate falcon]

whatistitit?

[tight lodge]

CNC machined mirror then polished

[slate falcon]

D:

[tight lodge]

What?

[slate falcon]

evil

[tight lodge]

Nuh huh. You pay someone to use a machine to make the hardest part

[slate falcon]

rough shaping is the easiest part

it just takes time

[tight lodge]

Ans its gonna most likely cost less than a mirror

[slate falcon]

you do figuring after you finish polishing

which is the hardest part

[tight lodge]

I'm talking about making a TMA like that

[slate falcon]

isee

[slate falcon]

best fov

[worldly bolt]

Gang

Forget plate solving successfully lmaoo

Or not having stars 100px in di

[slate falcon]

i will be using the 6" for guiding and platesolving

[worldly bolt]

Ah hell nah

[slate falcon]

an oag wont cut it

[worldly bolt]

Nah yea with that cursed fov it's def not

And f14 or whatever this is

This is for planetary in the f14 config tho right?

...right?

[slate falcon]

mainly

depending on the dso performance

if its actually okay im not changing the config

[worldly bolt]

Hope you got some 1" seeing

[slate falcon]

like sometimes

probably will never get it once i get the thing built

ill be like 90 by the time the skies become steady knowing my luck

[worldly bolt]

Rip

[slate falcon]

its been decent when i have issues and have to throw away the whole set

[stiff mason]

Just move to space

[stiff mason]

The atacama desert

[stiff mason]

You do know that always ends up more expensive then if you made one yourself

[crisp flower]

Or the Aoraki Mackenzie International Dark Sky Reserve

[stiff mason]

Not good enough seeing

Only good for fracs

1.8-3.5 arcsecond that's atrocious

At that point even a 3 inch frac is limited by the atmosphere

[slate falcon]

yk thats the global average

[stiff mason]

Yeah and it's not a good average

[slate falcon]

how

at 656nm the limit is 2.1 arcsecs

eh ig sometimes it will be

[stiff mason]

Compare that to atacama desert with 0.5-1.5 arcsecond or the sub arcsecond to 1.5 of the southern deserts in America

[slate falcon]

thos are like the exact same values sub arcsec to 1.5 arcsec and 0.5-1.5 😭

coulda just said 0.5-1.5 for both deserts

[stiff mason]

Sub arcsecond could be 0.9 or 0.7 or 0.2 and anywhere in-between

[slate falcon]

i know

both reach sub arcsecond

[stiff mason]

And i specifically meant the higher end

[slate falcon]

buh

[crisp flower]

Hmmmm

[stiff mason]

It varies man rare occasions 0.5 other time 0.8 most times 1 and other times 1.5

Here let me be even more vague it has a median seeing of 1 arcsecond

Same as atacama

[slate falcon]

https://youtu.be/RIBIqNz1GQc

(sorry i had to share this)

[stiff mason]

But the nice part is land in US doesn't costs an arm and a leg per acre you can find land for around 2,000 usd per acre compare that to most places where land even in remote regions costs hundreds of thousands of usd per acre

[stiff mason]

I kid you not land in namibia in the literal middle of nowhere will costs you 15k for 0.15 acres like bro

[slate falcon]

sounds like a good place to live

[stiff mason]

It's chill but those land prices are atrocious considering that 90% of the country doesn't even have electricity

[tight lodge]

Supposed to be depressing?

[slate falcon]

idk maan

[wicked lantern]

Depends on where you live

Where I live your lucky with getting land cheap

Most people are using the excuse of sentimental value that jacks prices

Its really stupid

There where people asking over 800 grand for a dump of land in WV with a real shitty house

My friend backed out of that one

[slate falcon]

i shoud live near u and build an obs

[candid flame]

i know :(

[stiff mason]

Damn

[gloomy hawk]

https://tenor.com/view/youknow-you-gif-19056787

[tall summit]

1min Sharpstar sub vs 2min RC6 sub. Makes one think..

[frosty shard]

Which sensor are you using with which scope?

Or wait I see, the 585 with the Sharpstar and the 2600MC with the RC

Is the Sharpstar image calibrated with flats? Or is it actually just not vignetted before calibration

[tall summit]

not calibrated

I have about 9h of last years RC data, and 3.5h of Sharpstar. Trying to stack it all together

on its own, this was my best effort with RC at the time, and Sharpstar now

[quartz meadow]

happy with the sharpie?

[tall summit]

Generally speaking, yeah, very much. It has it's own little annoyances, some one of it has to do with how small it is actually

[quartz meadow]

do you still have the RC?

[tall summit]

yes

but honestly, its becoming a corner case use tool

[quartz meadow]

you know what's better than 1 complete rig? 2

[tall summit]

Sharpie absolutely destroys it on nebulas, plus I can get pretty wide with it on 2600. With 585 it gives me pretty much the same view as RC with 2600. For mid to big galaxies, with my seeing, I can pretty much match the sharpness with 2x drizzle (even with snr loss to drizzle, its still so much faster). So it's really just smaller objects where RC makes more sense at this point

[tall summit]

I am eyeing that Juwei 17 mount

[frosty shard]

There's always the 8" RC

[tall summit]

now we're talking

[frosty shard]

if I were in your position I'd probably also find the 6" RC a little outclassed since the Sharpstar is pretty similar in size

A little smaller, but the speed makes up for it

But a 130 mm/200 mm aperture pair would give you a bit more differentiation

[tall summit]

I just need a mount and a guide cam, everything else i have enough for two rigs

[slate falcon]

you have to remember these 2 scopes have completely different sampling

[frosty shard]

Do you think you'll switch to mono anytime soon?

[slate falcon]

did you bin the rc?

[slate falcon]

theres always the 10" greg

[frosty shard]

Who's making one?

[slate falcon]

no one yet

[slate falcon]

idk if i should redesign the greg, if i make it any faster i will have to move the tertiary further up

maybe i could make it f10

[quartz meadow]

that would help

[frosty shard]

What's the current speed (also what's the primary speed)?

[tall summit]

No yet, I am content for now and don't feel like I topped out with OSC yet. There is room to get better with what I have

[frosty shard]

VATT went crazy with an f/1 primary (f/9 overall)

[frosty shard]

What Bortle or SQM are you in?

[slate falcon]

f13

[slate falcon]

im going f4 primary to play it safe

[frosty shard]

if I was building a Gregorian I'd do f/2 primary and f/8 overall but perhaps I'm too ambitious for my own good

[tall summit]

True, but which NGC6888 from above pops out as sharper to you. If you didnt know the scopes

[tall summit]

B7, "feels like" B6.5 on a great night

[frosty shard]

ah okay I'm in a similar sky

at least when I don't travel to dark sites

[slate falcon]

f2 250mm would make me want to harm meself more than i already do

[tall summit]

I have yet to do that

[slate falcon]

f2 is not easy to figure at all

[frosty shard]

This is only 1 hour of luminance data in low Bortle 5. I didn't even attempt to remove gradients

[tall summit]

daaamn

[frosty shard]

also this data was partially clouded out

[tall summit]

I think I missed out on Leos Triplet this yer

[frosty shard]

if you ever go mono put it on the RC first to keep things fair with the Sharpstar

Being able to get luminance, IR, and narrowband without a Bayer filter in the way makes an enormous difference in data quality

[slate falcon]

wide field rig got no ca

this is full spectrum

[frosty shard]

No IR cut?

nice

[slate falcon]

nope

[slate falcon]

its about f3

too

idk how the stars will perform

[tall summit]

I WAS contemplating minicam8 setup for Sharpstar

But it was too much money at the time

[slate falcon]

mimi shmimi

[frosty shard]

the Sharpstar will have more than enough étendue to overcome OSC inefficiency, but actually the bigger question is whether the filters are designed to handle f/2.8

[tall summit]

right now I am still using sv220 7nm

[frosty shard]

I assume you'd want to use the Minicam filters with it though?

[tall summit]

that was the thought

[frosty shard]

I would love a Minicam specifically for photometry with the Sloan ugriz' filters (and SHO to fill the slots)

Or perhaps Johnson-Cousins UBVRI if that comes out

I very likely wouldn't do proper astrophotography with it, just measurements

[candid flame]

How big is the sharpstar?

[frosty shard]

I believe he's got the 130 mm model

[candid flame]

Then the 6" will get more signal when cropped to the same fov

[tall summit]

with 585 I dont even have to crop to get to the same fov

[slate falcon]

the 6" rc is the equivalent of a 140mm lifht colection wise

[quartz meadow]

How about a Ar III filter replaced instead?

I would take something like SHO, Ar III, Sloan i filter and L

[slate falcon]

i love how like once every 6 months i go out to mutilate my bonsi

[frosty shard]

If you get the Minicam, it might be wise to pick up the 7 nm filters instead of the 3 nm for two reasons:

• the 7 nm filters are probably better suited to cope with an f/2.8 system (this isn't mentioned anywhere on the QHY pages though; you might have to ask around for more input)
• while it's a bit of a mismatch to use the Minicam with the RC, 7 nm filters are better suited to pick up narrowband emissions from distant galaxies (due to redshift) if you're aiming to capture that.
  The jump from OSC dual narrowband to mono narrowband will be large enough that I doubt you'll be dissatisfied going for 7 nm instead of 3 nm

[slate falcon]

this is the best hobby ever

[frosty shard]

I wouldn't be opposed, but since this would be a photometry setup instead of an imaging setup I'd be more inclined to get filters that would be useful for observing transients

I'm not sure whether [Ar III] would be useful in comparison to [S II] or [O III]

[quartz meadow]

I mean this is all just a area of interest thing with all the filters so there's no wrong choice

[frosty shard]

The He II filter may actually be more useful in that regard

[slate falcon]

[slate falcon]

the HeII in question

almost an hour of data btw

[frosty shard]

Well again this is for a photometry setup, so I wouldn't use it to get images

[slate falcon]

ah oki

[tall summit]

appreciate the info

[slate falcon]

i thibj this is my fov

ignore the raileigh limit i didnt change the aperature value

would be f0.36 with a 250mm

[quartz meadow]

Yeah the difference is really marginal between 3nm and 7nm

[slate falcon]

what about a 3nm ir filter in bortle jesus

[prisma summit]

Esprit 100 is only 1500€

[slate falcon]

[slate falcon]

my 10" will cost me £200

[frosty shard]

Honestly the question I'd have is what the best lines are for supernova monitoring. Probably [Fe II], Ca II, and Si II

[prisma summit]

no rc will beat that price performance

[slate falcon]

im getting an FeII

[slate falcon]

no commercial scope will beat my price to performance

only cost is time

[frosty shard]

Which emission line?

[slate falcon]

550-600nm

theres around 90 FeII lines

all extreme high intensity

[frosty shard]

in what kinds of environments?

[slate falcon]

hopefully SNr's

but im not fully sure

ik at lest one of the lines corresponds to PNe

[prisma summit]

time is the most expensive resource that exists

[sinful sapphire]

12" RC framing

[prisma summit]

so ur math aint mathin

[frosty shard]

The table I reference lists 29 Fe II lines (7 forbidden)

[slate falcon]

ive got at least 2 years left in me

i honestly dont care about time that much

[slate falcon]

hey, thats similar to me 10"!!!

[sinful sapphire]

yay free spherochromatism

we love spherochromatism in a 1500 euro scope right guys

[slate falcon]

hell yeah

fire do i do a hubble and end up with spherical ab

[frosty shard]

Well, if you're in it for the journey, it's time well spent

[sinful sapphire]

[slate falcon]

nice

[slate falcon]

le chonk le secondarie

[prisma summit]

clearly ur not an esprit user

[sinful sapphire]

https://tenor.com/view/homelander-glow-glowing-angel-hallucinating-gif-489344050525737667

[frosty shard]

Imagine building an apochromat and having the same aberrations as a Schmidt–Cassegrain

[slate falcon]

rc with its blankie 🥺 #

so cuute

[sinful sapphire]

for good reason

[frosty shard]

sleep tight pupper

[sinful sapphire]

the esprit 120 and 150 are the ones with the least amount of cases of spherochromatism ive seen

but the amount of people with 100/80 that complain about that issue is more than i care to count

[sinful sapphire]

notice anything?

[slate falcon]

my apo has spherochromatism a little

[sinful sapphire]

spherochromatism or CA and SA

[slate falcon]

it has only got ca at the edges

[slate falcon]

spherochromatism from one of the elements being the wrong way

[frosty shard]

How are you determining "performance" here btw

[sinful sapphire]

i mean spherochromatism forms when the correction of SA fails at a wavelength due to dispersion

[slate falcon]

yeah

[frosty shard]

Since when did you have an apo btw

or is this something you're raytracing

[slate falcon]

something i build for £60

[slate falcon]

@sinful sapphire idk if you can see it here really

but look at the window mesh

its crazy how the mesh is almost in focus

its super minimal

so its not like its an issue

@prisma summit how does it feel to have ur apo contended by £60 of lenses

[prisma summit]

i think ur opinion is dumb

[slate falcon]

[tall summit]

how do i pick my reference image?

[slate falcon]

in sequence

[prisma summit]

how does this have to do with RCs

[tall summit]

Rc data is involved

[slate falcon]

does this help?

[tall summit]

perfect, ty

[slate falcon]

u should stack the rc and 130 together

[frosty shard]

I believe that was the plan

[slate falcon]

@tall summit its gunna look hawt

[slate falcon]

LOOK WHAT BOB JUST SeNT ME 😭

[ripe crystal]

Nuhuh

Good seeing is

[slate falcon]

i would sell 10 years of my life for sub arcsec seeing

every other day

[tight lodge]

Based on his diagram... there are no mirrors

[slate falcon]

i occasionally do when the wind is going in the right direction

[slate falcon]

no, the "good" is a mirror

look, same green

guys, im currently trying to do a bray falls

but without any ai

[tight lodge]

"Same green"🤣

[slate falcon]

@frosty shard ive figured out how to double ur snr no ai denoise

regular stretch levels dont show the noise

[slate falcon]

i kinda like how it only effects the bg

[tall summit]

First RC and Sharpstar combo try. I wanted to use drizzled Sharpstar data, but it was refusing to register with RC, probably was doing something wrong. So it brought the whole thing down to 585 resolution

[quartz meadow]

which data did you set as reference?

[tall summit]

I dont remember:(((

[tall summit]

@quartz meadow stacking again, this time picking rc/2600 as a reference

[quartz meadow]

I would've set the 585 as reference but I assume you already did so that would be the next logical step

[tall summit]

I dont remember what was picked in a first stack

I need to understand why it works with calibrated "PP", but not with the 1.6x drizzle-registered "R" sequence. For Sharpstar dataset

[quartz meadow]

1.6x drizzle is odd

[tall summit]

Ok, I think I did it!

[slate falcon]

[tall summit]

using RC as a reference worked

check this out

that blue is strong!

[slate falcon]

holy canoli

[slate falcon]

you need to get both rigs running at the same time for double int

[tall summit]

seriously

Not to pat myself on the back or anything, but I love how this came out

So its 11h20m total in here

[tall summit]

I need to do this for m101

[stiff mason]

Uhh which one is the RC6

Jk btw

[slate falcon]

@frosty shard the answer is yes

aplanatic lens

[bleak solar]

What a beautiful night

[harsh matrix]

what a beautiful telescope

[bleak solar]

Thank you so much ☺️
I have it since October and to be honest this is the first real imaging night 😅
I used it two times before. Once for the bubble nebula which was just a 20 minute test and once last week for collimation. And now I am ready to go! Collimation is not perfect… but way better than before 😅
The Tipps and Tricks from this Chanel helped a lot

[slate falcon]

what a beautiful light sky!

[bleak solar]

I am listening to the titanic soundtrack in the mean time 😅

[slate falcon]

i feel like a bortle 10 user

[bleak solar]

Is it that bad where you live? 😬

[slate falcon]

with the no darkness yeah

im b4-5 usually

and whats worse

MY TRANSPARENCY ISNT REAL

its just that bad of a sky

why i hate summer:

[stiff mason]

Wait till wildfire season starts

Not even mountains can save you from that unless you are well above 4km

[gloomy hawk]

the answer is blowing in the wind

[quartz meadow]

sounds like you love Sahara Dust as much as I do

[slate falcon]

[bleak solar]

Well… for 1 hour of total exposure… not too bad

[bleak solar]

Comparison POV from my ZS61
… I start to believe in reflector supremacy

[slate falcon]

only supreme part of refractors is the supreme ca

[tall summit]

I would say it would be not having to tune them:)

[stiff mason]

Ew green

Disgusting

[crisp flower]

Most beautiful Part of sho-images

[stiff mason]

Nuh uh

https://tenor.com/view/nuh-uh-no-patrick-star-patrick-nope-gif-9473600452124631034

[crisp flower]

Yuh uh

[stiff mason]

That aint green that's yellow with a green background

[crisp flower]

And yet its the Green i Like Most in Terms of color

[slate falcon]

that green is hydrogen

[stiff mason]

No it's actually chlorophyll

[slate falcon]

[stiff mason]

https://tenor.com/view/rage-gif-15936507315900549043

[worldly bolt]

Most people end up not getting enough SII or OIII so Ha ends up dominating lol

[worldly bolt]

If you're image is mostly green you probably don't have enough SNR on other channels so really you're not even getting the most out of sho palettes. It's good to at least balance the channels.

[crisp flower]

Fair point
I mean Sii structures are pretty dope, i Just really enjoy the Green of ha
May be a Bit of a Stretch as Well but HAlpha is also much Stronger in Most nebulae (i think, or at least is the most popular to Image)so that also plays a Part in this

[tight lodge]

That's both correct and wrong at the same time.
SII and OIII are target dependant.
While M16 might look great in SHO, with a ratio of 1:1:1, Horsehead nebula won't. That's simply because each target has different emmisions. So imbalance is unavoidable no matter the integration time😅

In the case of the crescent nebula, you might get the crescent itself to look right in SHO, but the background will always be green since is an Hα dominant area

[worldly bolt]

Of course, my statement still stands.

[tight lodge]

Yeah, people really skimp on the 2nd most important emmision 🤣
SII is what adds depth to the image ngl

[worldly bolt]

How you balance the channels depends on the target. I was mostly referring to the image way above that was almost all green. That of course could be balanced better if other channels were cleaner.

[tight lodge]

Naah, the image above is a bit of ragebait. People around here do it on purpose

[worldly bolt]

That's uhh... Generous.

[tight lodge]

Well, they got you🤣

[worldly bolt]

You overestimate people's taste

(no offense to anyone )

[tight lodge]

The best images are these.
Prove me wrong

[worldly bolt]

Better than green

[tight lodge]

Better than RGB. You can't say mu BG is green

[candid flame]

mono images ❤️

[frosty shard]

SHO Crescent supremacy.

[frosty shard]

that image is perfectly balanced. no further changes are required.

[slate falcon]

geen is the been

[worldly bolt]

Cope

[slate falcon]

do you like your images not having a single speck of green

[worldly bolt]

Why have green dominant images when you can have fire orange

[sinful sapphire]

https://tenor.com/view/silly-idiot-emoji-idiot-emoji-gif-5038697630482117366

[worldly bolt]

Bottom left is a case where I do have green

It's a mint green tho

So not as ugly

Then again thats not traditional sho

Green is there to give cool cyan and yellow tones

For traditional sho

[sinful sapphire]

jellyfish in SHO looks horrible

SNRs benifit a lot from O-I

[worldly bolt]

Yea it's ehh, I compared like 4 diff palettes.

OSH was decent

[sinful sapphire]

very low SNR but OHO jellyfish

[worldly bolt]

Similar to sho ngl

[sinful sapphire]

yup

[worldly bolt]

If you boost Sii

[sinful sapphire]

well, similar to how SHO usually looks

but S-II traces almost all the same details as Ha so its pretty much redundant for jellyfish

[slate falcon]

im getting an O-I filter

[sinful sapphire]

https://tenor.com/view/ishowspeed-ishowspeed-angry-ishowspeed-overwhelmed-i-show-speed-ishowspeed-early-stream-gif-10270539420371864887

at least be original and get an O-II one smh

[slate falcon]

[slate falcon]

unlinked stretch ftw

[slate falcon]

im getting a few also may i add in a few months, telescope building > filters

[frosty shard]

yes I did run the fan through SCNR, gotta commit to the bit

[worldly bolt]

Swap the pics but the left caption is "people who actually balance channels properly"

[slate falcon]

love to see it

[frosty shard]

Same thing.

[slate falcon]

balancing and making the image bland are the same thing

[worldly bolt]

Pardon?

Balancing channels and deleting data are not the same

[slate falcon]

look at my collymation

[frosty shard]

Is that the focuser drawtube on top

[slate falcon]

yes

[slate falcon]

im afraid to process the 11 mins of data

[worldly bolt]

Shorten that bi

[slate falcon]

i just know nothing showed up

[worldly bolt]

11 min is basically a sub

[slate falcon]

i did 2 10 min subs

and 11 1 min subs on a diff target

[worldly bolt]

Uhh

Oh

[slate falcon]

guess what the wind did

it was windy only while i could image

as soon as the sun started coming up

calmest weather all year

I need to build a wooden palette fort for my scope

[worldly bolt]

There's an ODK10 with esatto 3" for 2500

I am a little too tempted

But I need to hold out

[sinful sapphire]

got a link for me sir?

[worldly bolt]

https://www.astromart.com/classifieds/astromart-classifieds/telescope-dall-kirkham/show/odk10-with-3esatto

On Astromart

[slate falcon]

buh

20 mins 8x bin

[tight lodge]

When the target is too bright for longer subs

[tight lodge]

What am I looking at tho?

[slate falcon]

m16

[harsh matrix]

interesting

I learned that the reason why people claim that diffraction from a central obstruction and/or a secondary spider reduces resolution is because they say that the resolution loss manifests in that local contrast reduction

which makes sense to a decent degree

it means your smaller details will be harder to resolve from what I can tell

the thing is

the theoretical resolution remains the same

the theta = 1.22*lambda/d

but absolute resolution gets distorted due to the CO

from the wavefront generated by that diffraction

[sinful sapphire]

yup

thats why say a really good 7" apo outperforms a decent 12" newt

[harsh matrix]

i havent heard that

[tight lodge]

What?

You on something

[sinful sapphire]

its true

ive seen it for myself

of course an excellent 12" noot outperforms the frac

[tight lodge]

Both telescopes imaging at the same time, under the same skies, same sampling?

[sinful sapphire]

...details.

not light gathering

not SNR

just pure details

on say, planetary viewing

am i saying you should blow 20k on a frac cuz its better than a consumer 12"? no.

[tight lodge]

Yeah, that's what I'm talking about. We're both telescopes under the same conditions.

[sinful sapphire]

it will outperform as ive personally seen

i however am sure a 12" OOUK for instance will blow the 7" frac out the roof

[tight lodge]

Ok, do the math.
Plus, I want you to explain how a telescope with a whole planet as central obstruction can achieve 20μas resolution

[sinful sapphire]

ah yes cuz that will definitely make the result any less true 🗿

in reality, as ive tested myself, the view through the 7" frac with the same magnification was better than the 12" consumer dob.

[harsh matrix]

what kind of newt are you saying is decent btw?

[sinful sapphire]

decent may have given a bit too much credit, gso/synta level

[harsh matrix]

planetary is a different beast from DSO imaging lol

[sinful sapphire]

for sure

planets show the optical quality the most though when viewing

[harsh matrix]

i think my 4" frac outperformed my RC8 on visual planetary simply because of the CO

[sinful sapphire]

quite possibly

also why MN are so goated

[harsh matrix]

the dude that made me ask about this is a DSO imager

[sinful sapphire]

shaaaarrrrrrpppppp and low central obstruction

[harsh matrix]

so what he was talking about was purely in the context of DSO imaging

local contrast deficiencies can manifest in DSO imaging and I've seen it plenty of times first hand

that's why I rely on decon to reconstruct the loss

[sinful sapphire]

buh

[tight lodge]

Ok, picture it like this. 2 points on your aperture, the distance between those 2 points determines the high spatial frequency (fine details) how many points can you fit in your aperture determines the low spatial frequency. so yeah, blocking 50% of your aperture does impact the low to mid spatial frecuency. Contrast and broad large structures. But the high spatial frequency stays mostly intact. Yes it gets affected by the CO and that's because the airy core gets redistributed to diffraction rings. that's why Vel, Me, Brandon... we get those fat strong diffraction rings around the stars. that's the only impact on the resolution by the CO

[slate falcon]

it makes smaller details harder to see due to distortion yeah, but the only like "actual" from the actual obstruction itself and not any side products is reduced low frequency info

not the higher frequencies that get done in by the extra diffraction on the side

it still is no ehere near as bad as people act tho

[frosty shard]

Okay I'm gonna have to ask: when you say the image looked better, are you thinking of on-axis spot sizes or the full field? Because the 7" frac should absolutely destroy any Newtonian when it comes to wide fields.

Unless you're using a coma corrector

All modern refractors are aplanatic designs, even achromats (the Fraunhofer doublet), so there is no coma (at least at a single wavelength), which severely limits the field quality of a Newtonian

On a related note: we really should be talking about kurtosis more often when we discuss star profiles.

This is really important when it comes to the apparent size of stars, because FWHM is just not a sufficient measure for characterizing star profiles in a final image.

[crisp flower]

current WIP is slowly coming together

[worldly bolt]

That's got a cool look to it

[crisp flower]

Took quite a few Tries and really ugly Versions to get it to this one

[slate falcon]

i nedd ir on thiss

[plush raptor]

so if you make the secondary smaller its better?

[stiff mason]

I didnt even know cameras could do 8x bin

[plush raptor]

you could make it a single pixel if you wanted lol

[stiff mason]

Sort of you max resolution is determined by the width of your aperture so take a 12 inch for example theoretical is 0.4 arc if you cover 99% of the aperture but leave the outer ring exposed you will still retain that 0.4 arcsecond resolution but that central obstruction will move a lot of the light from the center to the outer diffraction ring which does reduce your contrast but you can make up the contrast lost with more integration time you can also recover some snr using deconvolution

Also you can have two mirrors 50 meters apart reflecting perfectly onto a single secondary your resolution wont be the diameter of either primary it will be the distance between them in this case the resolution would be 0.0025 arcsecond or 2.5 miliarcsecond

Now you can either use a 5cm mirror or a 10 meter mirror it doesn't matter the final resolution will always be 2.5 milliarcseconds as long as the basline remains the same

And collimating two mirrors is far far easier than using glass to combine the reflected light

[plush raptor]

if your using a small sensor, what about reducing an f/5-6 or changing the secondary mirror for a smaller obstrction

[crisp flower]

More than there already is?

[sinful sapphire]

That works

[sinful sapphire]

Full field correction was excellent

Didn’t use a very wide degree eyepiece though

[plush raptor]

do you happen to know about etaloning

[sinful sapphire]

A teensy bit

[plush raptor]

how bad will it be with a 2.5nm oiii and a 585 (mono)

[sinful sapphire]

Etaloning? Pfff barely any

Silicon is highly opaque at that wavelength

[plush raptor]

what about ha

[sinful sapphire]

That will be more problematic

[plush raptor]

it corrects with flats right

[sinful sapphire]

Yes, but

If the angle is just right

It won’t go away fully

You’ll need to very slightly tilt the camera if that is the case which I doubt it’ll ever be

[plush raptor]

gulp

[gloomy hawk]

crop?

[bleak solar]

No, just didn’t care about framing

[gloomy hawk]

no if it isnt a crop what use do you have for such a small fob

[versed roost]

this is the RC thread

and that looks like a 585 if i had to guess

[gloomy hawk]

wdym

small rcs exist

[versed roost]

smallest is 6 inch, and RCs are usually f/9 or so. thats a 1350mm focal length

most people have 8"+

[bleak solar]

I mean all RCs have at least that small of a FOV with their native focal length. I will mainly use it for galaxies but for shooting small nebulae or looking at details in certain regions of nebulae (like here) it is the best option

[gloomy hawk]

that’s nothing, my mak is f12 and 1500 fl

[versed roost]

thats nearly identical 💀

and less than an RC8

[gloomy hawk]

can you shoot the spaghetti nebula thingy in m33?

[versed roost]

and im sorry you have to use that for DSO

[versed roost]

veloren has a good shot of that

[bleak solar]

Yes… and that is exactly why I got this telescope btw 😂😂

[gloomy hawk]

showwww!

ngc 604?

[bleak solar]

I didn’t shoot it yet

But I will soon

And I will give it my all!!

[gloomy hawk]

jane juliet type shi

when will m33 rise?

[bleak solar]

Couple of weeks I guess… I am not sure

[gloomy hawk]

ah, good luck then!

[tight lodge]

I think the 130PDS did good for a single sub

[bleak solar]

tasty

[gloomy hawk]

you think?😥

[tight lodge]

Imagine what it could have done in two subs

[gloomy hawk]

what about 500

[tight lodge]

That would be nearly 200h

All my projects together don't sum up to that😭

[gloomy hawk]

god i wish i had such a good mount

and temu intervelometer

intervalometer

[bleak solar]

when pointing the RC at the zenith are you never affraid something it gonna slip? I mean it weights quite a lot

[harsh matrix]

Not unless you dont clamp the saddle clamps down all the way

[tight lodge]

Add end stop screws to your dovetail
These specifically. They saved my OTA from eating dirt once

[prisma summit]

where did you get the gold folia ?

[tight lodge]

Aliexpress 😅

[slate falcon]

myself needs it

[frosty shard]

Technical nitpick: deconvolution doesn't recover SNR, it reshapes the MTF by amplifying high spatial frequency components of the image. That's why deconvolution taken to extremes just adds more noise to your image: there isn't enough data at high spatial frequencies to allow for that component to be amplifying without also amplifying uncorrelated noise contributions

[tight lodge]

Finally... we use spatial frequencies instead of arbitrary eyecrometer measured sharpness

[frosty shard]

Bruh. I've been all about the MTF ever since I started seriously imaging

[tight lodge]

Yeah, but how many times you have seen spatial frequencies being mentioned?

[crisp flower]

Me needs more

[frosty shard]

If we're talking about in general, literally for my entire PhD

I studied crystallography

[slate falcon]

nuhh uhh me needs most

[crisp flower]

No, living for it, i do

[slate falcon]

:(

[frosty shard]

You know what this reminds me of?

https://upload.wikimedia.org/wikipedia/commons/7/73/Orion_Nebula_in_NIRCam_long-wavelength_channel.png

[crisp flower]

Oh lol yea Kind of

I think i can pull Off to Match the colors more closely xD

[slate falcon]

my entire filter wheel will be ir so its okay

[slate falcon]

goood

[bleak solar]

okay that is a great idea!!

[crisp flower]

Oh then you are more dedicated
But its Always nice to See a Nir-enjoyer

[slate falcon]

it is!

im glad someones getting ir

when i cant (thermal noise)

[crisp flower]

Ive got more from last night to add

[slate falcon]

:D

[slate falcon]

dont skull react me, im dying here

[frosty shard]

you can't stop me

[crisp flower]

@frosty shard ive also noticed Just how much of Data i am losing due to abe, so gatting Flats done is Nr1 priority once i get home-which is in about 45 minutes

[slate falcon]

do i buy the stuff to grind mirrors or do i get 7 narrowband ir filters

[sinful sapphire]

Mirror grind stuff

[frosty shard]

if you want to replicate that, you might need to stretch the hydrogen channel with minimal local stretch intensity if you're using GHS. I think hydrogen line absorption is what's making all the stars really orange, so there's way less point in protecting stars if you want them to have more variation

[sinful sapphire]

I want to see the Greg

[crisp flower]

I think its more of an Sii-thing tbh

I did try to do an SSH and added the Nir after that Like i would hydrogen to galaxies

But i'll keep that in mind

[slate falcon]

i do too

[stiff mason]

Yes but the scattering caused by your central obstruction is very clean and predictable you could just bring the data and not the noise right

[harsh matrix]

https://www.cloudynights.com/forums/topic/997481-ring-pattern-in-images/#comments

@frosty shard ring artifact analysis possibly

looking into it here in 15 or 20 minutes

[harsh matrix]

the findings corroborate my own

[tight lodge]

You know what I familiar about this?

It literally looks like a shadowgram of the primary mirror

[frosty shard]

But if you look further, different reducers seem to give different artifact sizes

[slate falcon]

@frosty shard HOI palette without any subtraction

continuum ballances the image

iho becomes ourple

[slate falcon]

did a direct comparrison of infrared hydrogen and oxygen

wait no

thats just hydrogen and oxygen

this is all 3

infrared to hydrogen

infrared to oxygen

these are 2d histograms btw

[versed roost]

LABEL YOUR AXES

[slate falcon]

but then i would be able to read my own data!

[slate falcon]

this is oxygen to hydrogen sorry

[slate falcon]

hydrogen infrared

[slate falcon]

hydrogen oxygen

[slate falcon]

oxygen infrared

[digital nexus]

Hey chat

Il need help soon

with Collimation tomorrow night

it’s so close

[distant field]

Oh damn i gotta try that to diagnose flat issues

I rarely have them nowadays that i know what im doing, but good diagnostic

[harsh matrix]

they do

this is true

[harsh matrix]

it's more like a shadowgram of the lenses in the reducer

[tight lodge]

Yeah... shadowgram... something that shadows the mirror... i know, but you got my idea😅

[frosty shard]

What's the current state of collimation for your scope? Last I recall you just needed to make minor tweaks right

[digital nexus]

I dunno tbh

My backfocus might be off slightly, too close

Or off-axis coma. Or both

@frosty shard what do you think

[digital nexus]

Pls help

[slate falcon]

ur scope needs collimating btw

[digital nexus]

Which way

R you sure it’s not back focus

[slate falcon]

this image does sorta look like it just lacks int

[digital nexus]

I think it was like an hour

[slate falcon]

do you have a reducer?

[digital nexus]

Yes

[slate falcon]

ah

idk i know nothing about the reducer

if you are using it with the 6" you may just be at the edge of the usable field tbh

[digital nexus]

With a 533….?

[slate falcon]

yeah

[digital nexus]

The imaging circle is larger than that

[slate falcon]

how much is it reducing by?

[digital nexus]

It’s small but still larger

[digital nexus]

0.67x

[slate falcon]

is it a flattener?

or just a reducer

[digital nexus]

Just a reducer

[slate falcon]

probably field curvature idk

[digital nexus]

RCs don’t need flatteners though?

[slate falcon]

they have field curvature

the 2 main abs rcts have is astigmatism and field curvature

[digital nexus]

Well wouldn’t the curvature be equal all around then?

[sinful sapphire]

they do

[slate falcon]

it would be

idk i cant look properly at the images the compression is just horrible

[digital nexus]

The stars aren’t elongated evenly.

[slate falcon]

ovc if ur collimation is off it wont be dead centre

[digital nexus]

Yea discord compression kills it

[slate falcon]

also if theres tilt it wont be even

backspacing would also cause even elongation

[digital nexus]

And how do I determine what’s causing it then

[slate falcon]

idk maan theres a reason the rct is known as a pain to use

trial and error

you can see if its collimation just by unfocusing i thinke

but that requires no tilt

also tilt readings get affected by collimation

[digital nexus]

It’s impossible to get rid of the tilt

Just not happening

[slate falcon]

ah well

atp make ur own tilt plate

[digital nexus]

No tilt plates are useless on the RC6

It’ll mess up Collimation

[slate falcon]

decouple it

[digital nexus]

No lol

I don’t have the money or equipment to do that

I’d rather sell the rc6

[slate falcon]

i see why you are a fr*c supremacist tbh

[digital nexus]

Why would I want to bother myself decoupling scope cheaper than my frac

I’d rather sell it and buy a huge frac

[slate falcon]

just get zambuto mirrors

they only cost like 10k

[bleak solar]

I hear an owl nearby

[slate falcon]

put an owl on the rig

[bleak solar]

honestly that is a great idea!

An owl sticker

... now this telescopes nickname is "The Owl"

[slate falcon]

twit twoo

[slate falcon]

do you not have tilt with that chonk of a canera?

[bleak solar]

I do that is why I have a tilt adapter right in front of it 😁

the small plate between camera and OAG

[slate falcon]

ohh is that ehat that is

[bleak solar]

I mean filter wheel

I google the scream and it seems to be a Long eared owl

A beautiful animal

[slate falcon]

your scope has one very very big ear

the efw

[bleak solar]

the one eared telescope

[slate falcon]

@frosty shard im gonna make a 6" aplanatic greg to go with the 10" greg

it needs a friend

[slate falcon]

icl i dislike white tubes

they dont feel right tbh

[digital nexus]

I wish it was black

[slate falcon]

they should be dark like the sky at night

[plush raptor]

mines is white

[digital nexus]

It would match so well with my ragdoll if it was black

And my camera

[slate falcon]

yeah and its ugly as shit

[plush raptor]

bad for solar idk

[digital nexus]

uh what

[slate falcon]

??

no??

[slate falcon]

btw the gso rcts can be used for Ha solar

[plush raptor]

tube gets hot and introduces air currents idk

[digital nexus]

how

I thought you needed special solar scopes for Ha

[slate falcon]

you will always be seeing limited to the point it doesnt matter

[slate falcon]

nah

class casses are used commonly

[digital nexus]

I’m too scared to try solar

[slate falcon]

but the construction of the rct is similar enough you can use them to

[digital nexus]

I know I’d fry my gear

[slate falcon]

yeah

ha is also stupid expensive

too

[digital nexus]

Special filter?

[slate falcon]

yup

you need those tunable 0.1nm ha filters

and you may need an erf filter

buh

erf is

got the word filter in it

you need an erf for bigger than 6"

[digital nexus]

I bought cheap solar film and tried to make a solar filter but I was too scared to use it. Maybe il 3d print a case once my new 3d printer arrives

[slate falcon]

its like a white light filter but lets through 20nm of Ha and 20nm of calcium

[digital nexus]

The sun has bones

[slate falcon]

white light works fine too

[plush raptor]

do those like use bandpass shift or idk

[slate falcon]

D:

[slate falcon]

?

[plush raptor]

how would you tune it?

[slate falcon]

they use 2 similar filters and by shifting their closeness depends on how much light gets through

[slate falcon]

i think its sorta like that

i thibk it also has something to do eith temperature

https://www.firstlightoptics.com/solar-filters/daystar-quark-h-alpha-eyepiece-chromosphere-prominence.html

[plush raptor]

sure

[digital nexus]

Sure what bro

[plush raptor]

looks ok to a person who does not own an rc

[haughty steppe]

Hahahah, very insightful and useful info

[harsh matrix]

Can I have your ragodoll

[harsh matrix]

Needs to go up to the right some.

[digital nexus]

why

[harsh matrix]

Not a whole lot.

[harsh matrix]

[digital nexus]

I got this. its constantly changing from seeing

im gonna leave it be

it is perfect in a few shots

then not perfect

[harsh matrix]

This and the screenshot from above both have a brighter left side than right

[digital nexus]

yes but sometimes its perfectr

[harsh matrix]

Yeah that's what the seeing does

[digital nexus]

heres a star test

its pretty good

[harsh matrix]

But even in the worst seeing it should be perfect most of the time and bad only sometimes

Can you center a star rq

[digital nexus]

its close enough. im gonna image and if its bad then il adjust it

[digital nexus]

no im in the middle of calculating offsets

like halfway done

[harsh matrix]

🙃

[digital nexus]

theres another screenshot

[harsh matrix]

This is why I want it

[digital nexus]

buy one then

[harsh matrix]

+/-35" periodic error and regular 25" spikes

[digital nexus]

Im going to image Crescent Nebula i think. depending on the stars and outcome, il check collimation again if needed

[harsh matrix]

That's not on axis so it doesnt count.

[harsh matrix]

Im working on it

[harsh matrix]

That may be good enough I guess

I dont see major differences in the thickness of the spikes.

[digital nexus]

Ive had this thing for 8 months.... i think its time i just image with it 💀

this has been my only image so far

and as you cna see it has that ring around it. Which I THINK i fixed. pretty sure it was from a loose focuser, which i tightened

[slate falcon]

yea its a little hot on the left there

[tight lodge]

They are etalon filters. They have two similar filters. And adjusting the distance between them allows you to tune to a specific filter while any light that is out of phase will interfere destructively

[digital nexus]

is this an RC thing? the ringing?

[crisp flower]

Its caused by the Central obstruction, so its more of a reflector-thing than an RC exclusive

[digital nexus]

Somebody else said it’s internal reflections

[crisp flower]

https://www.cloudynights.com/forums/topic/731780-obstructed-optics-and-rings-around-stars/

That explains it better than i ever could i think

[digital nexus]

thanks

Refreshing to know that Hubble has this issue too

[crisp flower]

I think its rather cool instead of an issue tbh

[digital nexus]

My starless image disagrees

S was cooked

[tight lodge]

Bwahahahaha

[tight lodge]

It's normal. That's the redistribution of energy from the airy core into diffraction rings created by the central obstruction

[digital nexus]

I should’ve gotten a frac

[crisp flower]

Ive Not found it distracting in color Images

[tight lodge]

Ok, what you on?

[digital nexus]

Unhappiness

[tight lodge]

Bro... that looks so damn cool!

[crisp flower]

Ty man
Mistakes were Made that night, this is Red and ha only xD

[crisp flower]

Anyway, i dont mind These at all.
Have you tried Processing it either way and looking at the final?
Maybe theyre Not too obvious then

[waxen mountain]

Damn These colours

Very nice

[tight lodge]

The starless looks absolutely amazing

[crisp flower]

Yeaaa, tho this one was looking so ominous

[waxen mountain]

Cool

[bleak solar]

Yeah the full moon made the stars incredibly dim... and the white house did not help either

[prisma summit]

paint the house black 🙂

[tight lodge]

Flock the house😂

[slate falcon]

surround the house with one big baffle

[stiff mason]

Dude how many people have this problem

[tight lodge]

Heaps

[stiff mason]

What even is it caused by

[slate falcon]

you

[stiff mason]

It sort of looks like a turned down edge if it only affected the background and nothing else

[stiff mason]

Haha funny

[frosty shard]

Wait this is sicc

[bleak solar]

Thanks 😁

[bleak solar]

Hey guys, I wanna try it here too. I have installed the driver for my Gemini motorized flat panel. Now when I connect it in NINA I get the error:

"unable to connect to gemini automatic flat panel. Reason: Auto select com port is null"

I have also installed this CH340 driver
Can anyone help me?

[frosty shard]

Have you configured the device using the gear icon by the equipment list drop down

[frosty shard]

Finally got to pull the RC out...just to show my friends and family the moon in crappy conditions lol

[slate falcon]

[prisma summit]

contrast left the chat

[frosty shard]

We enjoyed it

[slate falcon]

i use arch now btw

i beat uupo photostacking

[bleak solar]

Yes. Now I have a different issue 😂
It now says that it cannot connect because of too old version number… but I have the newest installed… I already wrote to the customer service

[slate falcon]

he got a head start bc i failed to remember to configure a network

[keen agate]

Some people here also have a quattro 150p right? How did you guys get the primary mirror cell off? I can't get mine to move even a tiny bit but I want to install an aperture ring on the primary.

[tight lodge]

You remove the 4 screws that are on the outer cell and you have to tug on it, at the same time being careful

[bleak solar]

Now it is almost working, I can control it via the panel app but not via Nina… but hey… it almost works 😂

[harsh matrix]

Did you remove the 4 screws at the back of the tube that hold the primary on?

[frosty shard]

@harsh matrix my friends are going nuts for your M51 image in my story

[harsh matrix]

Helllll yes

I legit got so many comments and messages that im unable to keep up now

😭

Almost at 150 likes

Thats my most popular post ever

[frosty shard]

Protip: if you use Touptek or SVBONY equipment, add them as collaborators. They'll always accept and your posts get way more attention

My best is at 80 likes but I'm not intending on getting famous or anything

that was with Touptek as a collaborator

and it was just my rig

My best without them has always been outreach photos

Posts get way more likes with a face present

[harsh matrix]

hmmmmm

my M 51 rig/Quattro rig doesnt use anything other than some Touptek SHO filters

my RC8 rig is what uses all the touptek and svbony stuff

[harsh matrix]

im not either nor is that my goal

[pine path]

big rc time

[harsh matrix]

if i get too big, ill be too worried about trying to provide content for people who want to follow my journey in this hobby

[frosty shard]

BASED

[harsh matrix]

i just want to shoot stars and post whatever it is i find

while i worry about me and the next steps in my life

i dont want to make the hobby a chore

[harsh matrix]

oh blessed creation

grace the mirrors with more starlight

[pine path]

it’s a very cursed scope lol, very little of it is still original and we just replaced the secondary mount so even less is left

[harsh matrix]

@frosty shard if I am unable to resolve the excessive astigmatism, it is likely because i have overightened the primary mirror

I still have some suspicion that the primary mirror may be shifting. When I disassembled the scope some time ago, I secured the primary retaining ring only to the point where the mirror could still rotate freely, in order to avoid astigmatism from excessive pressure (don't really know if it's myth or fact). However, I now wonder whether that was the correct approach. I am even considering the possibility that the carbon tube itself may be flexing. I have an 86 mm refractor piggybacked on the RC, but removing it made no difference. Still, when rotating the telescope, I can hear tiny cracking noises, which could indicate some small amount of mechanical stress or deformation along the tube.

this is from that CN thread

but this dude also suspects the tube could be flexing subtly as well

[versed roost]

also zwo lol

i get hundreds of like when i add them as collab

[harsh matrix]

I think im going to disassemble it one more time briefly to loosen the primary mirror retaining ring a little, and then put it all back together, and reassemble the RC8 rig.

[versed roost]

and then i get like 10 likes normally lmao like on my rocket shit

[harsh matrix]

i dont even know how to add collaborators in instagram

i honestly thought the brands were doing that when i first noticed people doing it

[versed roost]

meanwhile apertura ghosts me on every post

[harsh matrix]

that's a bit of a surprise to me ngl

i feel like they'd be pretty supportive

[versed roost]

zwo social media manager loves me

apertura has collabed once out of like 15 times lol

wasnt even a collab they just made their own post with my image and tagged me

[harsh matrix]

lmao wtf

[harsh matrix]

I am sorry for your loss

[versed roost]

divorce incoming

when i upgrade

[harsh matrix]

get umi

no Z

garbage

[versed roost]

yep

17s is the plan

[harsh matrix]

@crisp flower so it was as I thought, about the ring of death

It is caused by flexture, mostly

there might be another cause, but it is primarily due to flexture, and a high sky background

it doesnt show up much if at all from dark skies due to the nonexistent sky background, but it will be very obvious with bright skies

light leaks certainly arent helping the problem so always make sure you have none of those