80h (yes, eighty) hours on the Triangulum Galaxy

[ebon snow]

RedCat 51 (250mm f/4.9), ASI294MM Pro, LRGB, Ha and OIII from Bortle 4, just under 80h total integration.
All 6 channels are 1x (0.6/gaussian) drizzle integrated and cropped to about 1/4 of the original framing. Have fun!

https://drive.google.com/drive/folders/1b1Cm_SwBL0QKO0LV46xjFPFiiaXJNxNC?usp=drive_link

The thumbnail/preview is just a quick process and pretty flawed (e.g. background is red). Still working on my process, it’s slow going as I find galaxies very hard to process generally.

[pulsar star]

@ebon snow cant download

[ebon snow]

Just texted when not signed in to Google drive and it works for me. ¯_(ツ)_/¯

[pulsar star]

now itt works lmao

[pulsar star]

ineresing

[broken robin]

how did you had the Ha and Oiii? still working on the LRGB part, the data is just insane

[cerulean lava]

@ebon snow this took alot of back and fourth work, i usually find galaxies the easiest to process, but ive alway struggled with M33, however im very very pleased with this outcome, and hope you like it too! thanks alot for sharing, this was the best M33 data ive ever processed

(second look stars outside the galaxy are a little bright...)

[fast zealot]

Thomas you have way too many clear skies

Share some with the rest of us

[ebon snow]

Nice nebulas!

[quartz socket]

I agree where are ours??????

[sudden narwhal]

Always jealous of people taking 80 hours worth of data when I couldn't even get like 10 hours this month due to the clouds🥲

[misty leaf]

you got ten?? I got 0 dude

[livid axle]

I only got 1/5th of an hour in data

[loud hazel]

this is crazy

ive never processed narrowband I might try and learn with this

[loud hazel]

first time working with narrowband insane data

[cobalt glen]

0 since september

[neon blade]

@ebon snow when i saw 80h i knew i had to give this a try. maybe pushed it a bit far... this is LRGBHaOIII (super L made from integrating LRGB together), Charles Hagen narrowband combination technique. pixinsight 1.8.9-2

[cedar shuttle]

Nice af

[cerulean lava]

Thank you! its got its imperfections though, first time processing 80 hours of M33

[blazing night]

I got 40 minutes of data 🤓

this month

(Well last month since it's now december)

[quartz socket]

Every version is insane

[ebon snow]

Yeah one of the reasons I’m upgrading mount

[ebon snow]

Yeah

First test run with AM5 today. It barely ever needs guiding pulses.

No idea, I just work here

[signal atlas]

My DBE wasn't as good as I wanted, and I gave up trying. 😅 GraXpert was no help either. This is my first time trying something like this, what a challenge! Nice data as always 🙂

[old cape]

RGBHO. First time trying the continuum subtraction stuff and integrated both Ha and Oiii with it. Details came out fairly soft since I used my own denoiser but I like it. Good data too!

[ebon snow]

Very nice!!

[timber widget]

how do you combine channels in siril? or not possible

[ebon snow]

No idea about SIRIL, sorry

[timber widget]

okay

[cerulean lava]

Use "RGB composite" in Siril

[pure kindle]

here is my try. its my first galaxy process

[minor cairn]

Amazing data. This is a LRGBHaOIII, with the Ha and OIII continuum subtracted.

[ebon snow]

Very nice!!!!

[fast heron]

One of the best Triangulum data ever. Excellent job, Thomas! Can I share it with my little astronomy community? We select the best datas on the internet and make a process competition. If you give permission, we want to use it so much! Of course we are going to write your Astrobin or Insta etc. that what do you want.

[ebon snow]

sure go ahead, you can link https://www.astrobin.com/users/madrobby/

[fast heron]

Thank you very much!

[dense flame]

My try

[exotic arrow]

so that's what i did but only with RGB chanels couse i couldnt figure out how to put all that together. used only gimp

[cedar shuttle]

You can set the luminance stack as "luminance" in the layers panel.

[fast heron]

You can combine all of them on Siril, it's free and very powerful. And it's easy to learn.

[exotic arrow]

I'll try when I get home

[twilit orchid]

My try.

[mortal cape]

@ebon snow Nice data! Thanks for sharing

or with slightly more saturation...

[river thorn]

Thanks for the data!

[gleaming ledge]

@ebon snow Is this THE Thomas Fuchs? From Zepto? 😄

[ebon snow]

It me

[gleaming ledge]

Ha! Nice how people can span multiple different communities. I'm actually trying out making stacking and post processing stuff with web workers and wasm, in case you're still into these kind of things

[ebon snow]

Oh neat! Please keep us posted how it’s going with that. 🙂 Astro is quite resource hungry, wonder how that will go in a browser.

[high crypt]

what an incredible dataset

super fun process

[gleaming ledge]

I'll focus on planets only for now, ffmpeg.js is helping me out with converting any video or image list to PNGs. Then I do frame ranking in the browser, send only the top-ranked frames to a server, which is stacked there, then some realtime image processing on the stack can again be done in the browser with a wasm web worker.

Your 80h of data won't work ever I think 🙂

[balmy pivot]

Amazing mate!

[exotic arrow]

How to bring those dark clouds out, I really like how they stand out in galaxies especially in milky way but they are dark, and I want them to be dark
But when stretching Im loosing contrast between the cloud and the rest of the galaxy

[ebon snow]

in pixinsight, usually masking and LocalHistogramEqualization and wavelet processes (e.g. HDRMultiscaleTransform)

[exotic arrow]

Ok, there is a lot of words I have to Google but I guess that a start
Thank you

[ebon snow]

these processes basically increase contrast but in a localized fashion. masking is important so it doesn't influence other parts of the image.

[gleaming ledge]

Hi Thomas! I have some cloud stacking to test. Not sure if you also do planetary, but in case you do and are interested in testing (and debuggin :P), let me know!

[river thorn]

This time I focused on Ha/Oiii extraction, I discovered a new technique that works really well

[carmine hearth]

here is my try at the data

I did it in Siril btw. Any tips/criticism is greatly appreciated as I am still very much a noob

I just learned how to assign narrowband wavelengths to the color channels and this is my first process where I used that

[fleet citrus]

ig i have made it a lil worse but yeah this is my final

[fleet citrus]

second attempt

[ebon snow]

Great! Keep working on it but I’d recommend to take a few days off and try again. It takes a while to hone processing skills but if you keep doing it you’ll get good at it in no time!

[fleet citrus]

thank you :)) ill try to process it better at the next attempt

[cerulean lava]

6 months later... gotta say ive always hated processing M33, but reprocessing this and getting this result kinda makes me wanna image it ngl. Stunning data as always!

M33 in HaOIIILRGB

[ebon snow]

Wow!!

[cerulean lava]

Glad u like it!

[gusty fable]

didnt notice my bad DBE on the Oiii data so the corners are greenish but this was good practice, thanks for the data!
[image]

[gusty fable]

bit less purply, I should’ve adjusted the galaxy colors and then added the subtracted Ha back but I didn’t save the project so the Ha regions are much more subtle now

[high crypt]

@ebon snow a bit late, but looks like im the first here to make out some IFN

obviously the process is pretty so-so, i probably couldve worked on the background a bit better 😅

however theres actually not super many images which have nice ifn like this, so im glad the 80h shows it well

[high crypt]

better than my first process at least

slightly less tragic background

[sudden narwhal]

that deepsnr running strong

[high crypt]

actual gamechanger tbh

absolutely juiced that signal

[sudden narwhal]

I always have problem using it on mono data without creating these noisy star likes artifcats

[high crypt]

yeah u have to create a lot of RGB noise until it masks the original noise profile fully

after i did that, the RGB's signal was basically equally as good

so i combined them using imageintegration for Lum

so the lum i used is actually the L filter plus the artificial lum from the RGB

i could clearly the IFN in each colour channel even before star removal

super good signal

[sudden narwhal]

so you extract lum from RGB to conduct deepsnr, and combine with the actual L later on to create a "super L"?

ohhh, or did you just replicate and made a fake RGB by adding noise to each and combvine?

[high crypt]

actually thats what i probably shoulve done (run dsnr separately then combine according to SNR). i actually combined it before deepsnr, cuz i thought it would otherwise screw up the SNR calculation, then i did the monochrome deepsnr on the new "superL" image

[sudden narwhal]

dude you are cooking some crazy processing

[high crypt]

in future, ill probably run dsnr naturally on the RGB, extract L, then run dsnr with the trick on the original L, THEN combine them either by integration or by pixelmath

[high crypt]

always changing haha

im already hugely better than a few months ago

[sudden narwhal]

are all these done in linear?

[high crypt]

as you can see by my original process of this featuring absolutely 0 IFN

[high crypt]

yeah

i always do stuff in linear if possible

[sudden narwhal]

this dataset is kinda lacking resolution tho, I am thinking of doing m33 soon, with a 8inch newt, and the 2600mm fov, should juts fit perfectly

[high crypt]

yeah your setup is crazy, it was really fun processing the veil last time

[sudden narwhal]

thanks for the processing, I learnt a lot from you, and I still need to digest more lol

[high crypt]

yeah im always changing my workflow too, i think the most important thing is to try think of strategies to achieve your processing goal every time then u will improve

[cerulean lava]

Haha well a 2" refractor can only get so much detail lol, i thought it was incredibly sharp data tbh. Youd get a really nice image of M33 though with a 8" newt