Sharing great M63-Sunflower Galaxy - RGB data. about 6 hr

[vale sparrow]

TS ONTC808 (8 inch newtonian telescope)
Angeleyes 2 in barlow (resulting in 1600 mm focal length)
HEQ5 Pro guiding (about 0.6 total RMS)

Image is stacked but unstretched. Also applied Photometric color calibration and BlurXterminator (since many do not have that option).

Data is ready for you to do your magic!

[old horizon]

This is great data, but do you have any idea why one side of the galaxy is blurry and the other crisp?

[rich ridge]

interesting idea to use a barlow for dso, did you get many trailed subs or was tracking stable enough? or did you bin?

[vale sparrow]

THis is a feature of the galaxy, not bad data. I believe it is because there is a starhalo around the entire galaxy and the "blurry" part is seen through the star halo while the sharper part is closer and because of that seen more direct.

https://cdn.discordapp.com/attachments/1098242688404435075/1098319232191709224/image.png

[vale sparrow]

Not a single one. Pixel scale is just below 0.5 arc seconds per pixel. Guiding was around 0.6-0.7 arc seconds.

I did not use a coma corrector though, so the image is pretty much cropped into the.

[rich ridge]

uh interesting, shouldn't having guiding above the pixel scale ruin stuff?

[vale sparrow]

It will not ruin anything, just make things a little blurry.

But since guiding and pixel scale is very close in this case, I dont think it mattered at all.

[uneven tartan]

do you mind posting the fit without the blurx?

[old horizon]

Interesting

[vale sparrow]

No worries.

OTW, but slow internet tonight,

[uneven tartan]

Also, only thing I can add to this image is, maybe take some bias frames as you have quite a bit of banding

otherwise, amazing data

[vale sparrow]

https://drive.google.com/file/d/17DcsvxjqHhQqa67phFttM5_KlX19j1P6/view?usp=sharing

[vale sparrow]

Right, banding is in there, I did use Bias but I have some issue with the drivers

[uneven tartan]

Quick edit on the BlurX one, Ill check the other tomorrow, great data! Thanks for sharing

slight variation in colour cuz i changed my mind

[vale sparrow]

That is a really great one!

[sonic nexus]

Just a small quick process on the without blurX stack (: Super incredible data here! Thanks for sharing

Manual Decon and no denoising

[vale sparrow]

Looks great! How do you do manual decon? It looks just as good as BXT, maybe even better!

[sonic nexus]

Haha I love the looks of manual Decon lol basically I use a PSF script for a image of a star basically and just change the settings till it looks good XD can be quicker than blurX or slower than BlurX but I much prefer the looks of manual (: I can send you the script file if you like

[vale sparrow]

Please do!

[sonic nexus]

Not great at stars which is why I remove them first but on the galaxy it looks good

[sonic nexus]

Sure thing! I’ll send it in a min

[sonic nexus]

Sorry i took forever 😅 had to change my DSLR battery and my mum can talk for a good while XD

Basically just put this in Pixinsight>src>scripts and feature scripts like normal lol

[vale sparrow]

Ah

thx, will check it out tomorrow.

[timid oracle]

I could not figure out how to remove that horizontal banding. Also, I had some DBE struggles getting the background noise out of the star halo around the galaxy. This is as good as I could get it before winding down for bed. There are some neat dim fuzzies in the background, interesting being done through a barlow!

[vale sparrow]

In siril, there is a process called "unbanding", in Pixinsight a script called "Utilities/CanonBandingReduction. That workes for me, but it is an error in the data in the first day. I might make another stack without the worst of the bad 🙂

BTW, what software did you use?

[timid oracle]

pix

i didn't know about the canonbandingreduction, i'll have to remember that (as a T7i owner!) [edit: i tried that on my final result, it worked. amazeballs 😂 ]

i used starx and saturated the stars a bit, then fiddled with everything else. after noisex, i used unsharpmask to sharpen it back up a bit, then played with shadows to darken the background a little more. it had a green hue to it, i think. maybe just a weird shade of gray. 🤷‍♂️

[vale sparrow]

Tru SNCR from the noise reduction. It removes green hues

[empty sparrow]

Does this process come from the same data from the .fit file above? If so, that's an insanely good process considering the amount of that halo you were able to bring out.

[vale sparrow]

Yeah it does

Wait

It comes from the stack without blur exterminator

There should not be any difference because it is the exactly same data set

[empty sparrow]

Oh that explains it then. I couldn't come anywhere near the amount of dust around the galaxy you were able to pull out from the BXT .fit file no matter how much I stretched it. I just tried this version without the BXT, and it contained 10x the amount of dust for some reason. So there must be some kind of compression going on in the BXT file.

[vale sparrow]

Ooh, good info!

[uneven tartan]

After looking at the data, Ive noticed you captured the tidal tails aswell, but thats going to be AWFULLY hard to properly bring out

ill do my best

@vale sparrow

[empty sparrow]

@vale sparrow Here's my process, hope you like it. Amazing data btw!

[vale sparrow]

I did not know there was one. I saw the lines though.

[vale sparrow]

Stunning!!! Best one! You win!

[uneven tartan]

Went all out, hope you like it!

[vale sparrow]

Brilliant!

[lethal falcon]

@vale sparrow thanks for sharing! Here's my effort (PixInsight)

[vale sparrow]

Absolutely top notch!!

[lethal falcon]

thanks! I was out shooting this same target on Monday but only managed 3 hours between clouds. I like your data more.

[vale sparrow]

That is also very good! 3 hours! What bortle?

[lethal falcon]

Bortle 5...this was without an LP filter (I have a hunch that my LPRO is making colour processing more difficult). I realised I needed to collimate the scope when I got the data back- don't look too closely at the edges 🙂

[vale sparrow]

I know. I cant use the comacorrector at same time as barlow.

[lethal falcon]

impressed that you get these results with a Barlow, that cannot be easy

[vale sparrow]

It is an opticallt good barlow. Good glass. Its like a small refractor inside a large newtonian.

But I am surprised too. With my SW150PDS the result was less remarkable.

[empty sparrow]

thanks!

[old horizon]

After seeing all of these great processes I am realizing just how much I cooked mine.

[vale sparrow]

I thought the warm glow was cool. If we can play with nebula colors, why not also with galaxies!

[mental lotus]

how are all of you getting so much color out of the data? thats my progress so far (really quick edit) i even had to put it on another visual setting, to see all the details, without overblowing the core or doing to much streching

[sonic nexus]

Only use Linear mode when doing stretches and use Histogram tool not Asinh or the other one

For colours in Siril just Photometric Colourcalibration or normal Colourcalibration then just saturation

[empty sparrow]

There was already a pcc applied to the stack, so you should be able to just boost the saturation. But in case that doesn't work, do a manual color calibration. Using curves on all separate channels works best imo, but there are also tools for it.

[mental lotus]

so i tried it, but the saturation doesnt work, bc there isnt blue or anything for me in the data (idk what i did wrong)

[sonic nexus]

Theres a fair bit of colour lol this is just stretched and saturated

No BGE or CC

[mental lotus]

but HOW, i streched it, i did color calibration, now im gonna split RGB

[sonic nexus]

I didnt colour calibrate but to bring more blues out do your background selection like this

while linear

Should do a fairly good job at bringing the blues out

[mental lotus]

ok ill reset my progress and try it :0

[sonic nexus]

Hmm although for some reason it appears when done in linear it clips the data

[mental lotus]

thats weird...mhmm

[sonic nexus]

Ok so its because its a background neutralisation but basically use something fairly orange in the frame and use that (not the galaxies core) and itll bring some more blue tones out without clipping (done after basic stretches)

Left is after, right is before

[mental lotus]

uhhhh

thats more than dark 😂

[sonic nexus]

Where did you use as your reference point XD

[mental lotus]

i just did background-extraction, green noise remove, stretching and after that i tried color calibration with the selection that u told me to do

[sonic nexus]

Hmm hang on

[sonic nexus]

K what i learnt here is dont do a BGE or colour calibration at the start XD dont do a BGE at all and do the Colourcalibration nearer the end lol heres a little timelapse

[mental lotus]

bro did speedrun. Yes thank u. Im will try it, btw: im using auto stretch, is that ok? Or should i do manual stretching

[sonic nexus]

I use Autostretch as a preview but not as my actual stretching so definitely manual Histo stretching would be better

[mental lotus]

OMG

thank u so much

but when i tried to save it, it crashed

but it still saved the file

nice 😄

Which one is better? :0

@sonic nexus

oh wait u are playing rl, sry for interrupting you

[sonic nexus]

Dont be sorry lol just finished the game XD i think left generally looks better and right may be clipped slightly but either way the colours are a HUGE improvement!

[mental lotus]

yes haha. But its not enough much details, how can i improve that. bc i dont have this part in my image . Like here

[sonic nexus]

Ahh the IFN cloud thing XD just requires more stretching tbh and if you want sharpness the best thing i can think of is sharpening wavelets or Registax sharpening

Deconvolution is great but not so great in siril sadly

[mental lotus]

yes i hate Deconvolution, literally 0 changes

[mental lotus]

is there a way to do that in siril?

nvm im just gonna download Registax

[mental lotus]

so

Main processing is finished

now im gonna edit it a little bit in photoshop

here are all 5 versions

now photoshop 😄

[sonic nexus]

Looks great! Definitely sharpen without the stars in the image tho so they dont look overly bright

[mental lotus]

its finished, its rendering now

@sonic nexus here is the final version 😄

[sonic nexus]

Nice! I think it was a little over sharpened still as there are some noticable spots in the galaxy but other than that it looks pretty good! Nice work

[mental lotus]

Thanks Its my first time using RegiStax

[vale sparrow]

Saturation i Siril uses a background slider to exclude saturation in the background. Is that the problem?

[upbeat badger]

Worked in SiriL and messed around a bit in PS. Somehow just realized the banding 30 seconds ago so I guess its staying. Thanks for the data!

[mental lotus]

nah i already solved it dont worry

[vale sparrow]

Great job!

[vale sparrow]

The banding has to be dealt with in siril (banding reduction process) or PI (Scripts, Canon debanding). I found the driver issue that is the cause, but will try to batch preprocess all of the individual subs to fix it.

[upbeat badger]

Thanks for the help. Again thanks for the data

[crimson wasp]

Amazing data

[vale sparrow]

That is another great! process! Thanks!

[cobalt blade]

Seeing basically makes it so you don't trail

When you're at that scale

And guiding so close to it

[rich ridge]

makes sense, I completely forgot to account for seeing

[nimble blade]

i messed up the colors ;-;

[lethal falcon]

Out of curiosity which camera is this?

[vale sparrow]

Naah, love it!

[vale sparrow]

It’s the RisingCam IMX571 (26 mp cooled color camera)

[flint mica]

quick process, a little too much noise reduction... (open in browser)

[vale sparrow]

Wow! You really made the details pop!

[calm epoch]

thank you very much for this image to process. Very pretty

[west kindle]

could u please try my data? The Ngc7000 here in #1021002743080558642

[calm epoch]

let's see this 😉

[vale sparrow]

AMAZING how many different flavours that comes out of the same data. Really beautiful edit.

[rich ridge]

did you use a coma corrector too with the barlow?

[faint fjord]

idk why but I just love the colors and the look of this galaxy. im addicted to it and i cant explain why lol

[prime wraith]

quick 20 minute process. beautiful data :)

hmm discord fried it lemme try again

[vale sparrow]

Ni, just the barlow. I had to crop the outter parts of the image to get rid och the affected areas.

[vale sparrow]

Nice!!

[sonic nexus]

@vale sparrow My revision! Thanks for sharing! (: Manual decon and NoiseX

[vale sparrow]

Absolutely brilliant!

[sonic nexus]

Thank you!

[spark dagger]

Very new to processing, Second time ever doing a galaxy but your data definitely made things enjoyable to work with. Many thanks 🙂

[warm pasture]

I think I messed up somewhere. @shrewd warren thoughts?

[shrewd warren]

Looks great to me

[warm pasture]

Ah, alright. I was really stoked for how this came out. Felt wierd though. I think I pushed the background stars too hard.

[shrewd warren]

Not at all, matter of fact you have the best M63 I have ever seen.

[rich ridge]

I like the amount of stars, you loose a bit of detail in the core but it's nice overall (yes I know they're the wrong stars)

[carmine turtle]

very nice data

[shrewd warren]

dude where are your stars ?

[carmine turtle]

I did star reduction, guess i did it too hard in ps that some of the stars dissappeard.

But i think star reduction wasnt really needed anyway.

Just for the aesthetics

[rich ridge]

One with too many stars and one with none

Perfectly balanced

[shrewd warren]

there can never be too many

[vapid pulsar]

siril

[upbeat badger]

What happened to your stars? And diffraction spikes?!

[carmine turtle]

too much star reduction maybr

[vapid pulsar]

[vale sparrow]

I believe Siril stretches the stars and background separetly now with the Starnet implementation. Good details though.

[calm epoch]

Nice stars processing !

[lament aurora]

My 10min take.

[shrewd warren]

bit to dark and over-sharpened

also where are all the stars

[vale sparrow]

You got the core very detailed!

[lament aurora]

Agree