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  #1  
Old 16-04-2012, 10:31 PM
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M42 (finally!)

Back in Dec and early January, before Qld weather went to pot, I collected more data than I've ever managed for M42. The goal was to get a 2 frame mosaic using the Newt and QHY9, all collected from my suburban location over multiple nights.

Pixinsight has some newer powerful mosaic features that needed exploring along with native HDR functions that were appealing for such a project. I quickly discovered however my 32bit XP OS couldn't cope with the massive 64bit files. Eventually a dual boot Ubuntu 64 bit PI install solved this (yes, I'm still a 32 bit XP laggard ). Figuring out how to assemble the 5 filters relatively seamlessly was still an educational adventure however, thus the very late M42 presentation.

This was about 13hrs of data all up (about 6.5hrs per frame).
Combination of 5 and 4 min subs for fainter areas and 60 and 45sec subs for bright areas. Technically this is a HaL HaR G HaB concoction using PI pixelmath.
An early processing effort on the dust in a single frame is here for those interested:
http://www.iceinspace.com.au/forum/s...ad.php?t=88162

Anyone, thanks for looking. Comments on this frankenstein most welcome.
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  #2  
Old 16-04-2012, 10:50 PM
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Awesome!
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  #3  
Old 16-04-2012, 11:13 PM
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Very impressive, Rob, and I bet you learnt a lot! Are you going to unleash a high res version?

Cheers,
Rick.
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  #4  
Old 17-04-2012, 12:10 AM
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It must be a pleasure to work with that much data Rob.
Looking forward to catching up with you soon at AF.
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  #5  
Old 17-04-2012, 05:51 AM
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Awesome Rob. That's quite a lot of work.
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  #6  
Old 17-04-2012, 09:34 AM
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Awesome mate, as always
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  #7  
Old 17-04-2012, 09:53 AM
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Everything looks good. Colour, framing, guiding.

Frank
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  #8  
Old 17-04-2012, 10:01 AM
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A great M42 Rob, worth the wait and effort huh?

Mike
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  #9  
Old 17-04-2012, 11:08 AM
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Stunning Rob, a dream image for many like myself, Top Show and credit to your work
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  #10  
Old 17-04-2012, 11:52 AM
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Nice one Rob. Very fiery colors. Some of the blue stars cores are a little muted (or it could be my crappy monitor) but the rest is top shelf. Good one.
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  #11  
Old 17-04-2012, 05:19 PM
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Wooohooo!!!!!

what a beauty
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  #12  
Old 17-04-2012, 05:45 PM
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Brilliant Rob. PI runs very well in ubuntu.
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  #13  
Old 17-04-2012, 05:47 PM
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A lovely M42. Well worth all the effort.

Cheers

Steve
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  #14  
Old 17-04-2012, 06:34 PM
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A spectacular M42 Rob. My hats off to you for your perseverence and effort.

Greg.
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  #15  
Old 17-04-2012, 07:30 PM
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Yes fantastic Rob. The colours and clarity of it all is great. Well done.

Mark
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  #16  
Old 17-04-2012, 07:40 PM
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Hi everyone. Thanks for the encouragement.

Quote:
Originally Posted by rustigsmed View Post
Awesome!
Thanks for looking Russell

Quote:
Originally Posted by RickS View Post
Very impressive, Rob, and I bet you learnt a lot! Are you going to unleash a high res version?

Cheers,
Rick.
I'm oversampled on a relatively narrow FOV Rick, so higher it's not like swimming around in one of Mike's 16803 renditions, but I've put up a full size jpg here for those interested:
https://picasaweb.google.com/UserRob...99488696156626
(click on Full Screen and press f11 for full screen, or download)


Quote:
Originally Posted by jjjnettie View Post
It must be a pleasure to work with that much data Rob.
Looking forward to catching up with you soon at AF.
It was fun when the last of the Ha was in and realised I was started to get "dusty" JJJ. Not so much fun when I fully processed both frames then found I'd have to go back and merge the raw frames before stretching etc
Heck, it'll be AF time before we blink! Yep, be good to hang out with everyone again.

Quote:
Originally Posted by peter_4059 View Post
Awesome Rob. That's quite a lot of work.
Thanks Peter - I had high hopes for getting into the Rosette and Cone nebs too, but my imaging diary shows everything ground to a halt weather-wise after 4/1/12

Quote:
Originally Posted by davewaldo View Post
Awesome mate, as always
G'day Dave! Great to hear from you. Thanks mate

Quote:
Originally Posted by telecasterguru View Post
Everything looks good. Colour, framing, guiding.

Frank
Thanks Frank. I was a bit worried about my stars, but ran out of puff to fiddle much more.

Quote:
Originally Posted by strongmanmike View Post
A great M42 Rob, worth the wait and effort huh?

Mike
Yes Mike, but I'm still to feel an itch to do a Sidonio.....
(or maybe some zoom fields)

Quote:
Originally Posted by astronobob View Post
Stunning Rob, a dream image for many like myself, Top Show and credit to your work
Thanks Bob - I think I read somewhere you've got an 8" F4 coming? You'll have a ball with it not to mention bit wider FOV than I have.

Quote:
Originally Posted by multiweb View Post
Nice one Rob. Very fiery colors. Some of the blue stars cores are a little muted (or it could be my crappy monitor) but the rest is top shelf. Good one.
Yes Marc, I debated going back to scratch and deconvolving the blue channel to shrink the blue overlap in many of them, but I couldn't face going right back in the end. I have eroded some of them to soften the effect, so some of them now look a bit "mush" I suspect.
I'm actually starting to wonder if on my next big project I shot shorter blue frames versus red and green, but take more of them. Should theoretically shrink the "bloat" but preserve blue detail??

Quote:
Originally Posted by june View Post
what a beauty
Cheers June

Quote:
Originally Posted by rcheshire View Post
Brilliant Rob. PI runs very well in ubuntu.
Yes Rowland, I figured it wouldn't hurt for me to finally play with Linux, and Ubuntu is fun to explore. PI certainly much more responsive, and it's eerie how consistent the interface is across OS's. I did have a weird problem configuring my internet connection for a while which made life tough initially, but sorted now.

Quote:
Originally Posted by Stevec35 View Post
A lovely M42. Well worth all the effort.

Cheers

Steve
Thanks Steve

Quote:
Originally Posted by gregbradley View Post
A spectacular M42 Rob. My hats off to you for your perseverence and effort.

Greg.
Thanks for that Greg. Hopefully weather will allow some new multi-night projects sooner rather than later. I never thought I'd be able to see this much of M42 when I started in 1980 with my 4.5" Tasco Newt. Hadn't even heard of the "Running Man" back then

Last edited by RobF; 17-04-2012 at 07:55 PM.
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  #17  
Old 17-04-2012, 08:05 PM
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Awesome!

Might have to have a chat with you some time about the PI Ha blending pixel maths. Did you use Vicent's method? Or just pure pixel maths without the continuum stuff? Haven't had any replies in that thread on PI forum yet
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  #18  
Old 17-04-2012, 09:34 PM
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Very nice Rob,

Where do I sign up for your PI workshop?

DT
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  #19  
Old 17-04-2012, 09:41 PM
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We could/should have a Brissie PI processing hookup
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  #20  
Old 17-04-2012, 09:51 PM
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Quote:
Originally Posted by troypiggo View Post
We could/should have a Brissie PI processing hookup
Definitely - there are a few of you out there who seem to have a far greater understanding of this complex software than this mere mortal does. I would love to be involved in a "ruthless distillation" of the techniques for PI.

DT

Last edited by DavidTrap; 17-04-2012 at 09:55 PM. Reason: deleted a bit
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