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View Full Version here: : Corona Australis 8 Panel Mosaic - Repro attached


Rex
25-08-2015, 02:51 AM
G'day everyone. This has been a mission and a half.
8 Panels consisting of 30 x 300sec + 30 x 600sec frames per panel. Captured over several nights during July and August with the gear in my signature. That makes this my largest ever data set, with 7.5hrs per panel and 60hrs total. Seeing has been crappy up here this year so I know this is far from perfect, but it is the best I can come up with using current knowledge and Data.

Large version is here: http://www.astrobin.com/full/205432/0/ Be warned it is large, about 30M.

Edit: I reduced the size for better viewing after realising what Paul mentioned below. On my screen I did not have to scroll as it is square not the normal 16:9. Anyway new not so large version here:http://www.astrobin.com/full/205432/C/

Advice and critique well received. Thanks for looking.

troypiggo
25-08-2015, 07:08 AM
That's epic! May just need to tweak the colour balance? Looks a little green? But that on my iPhone (not calibrated).

batema
25-08-2015, 07:38 AM
That is definately an epic challenge. I concur the background does look a little green. Maybe drop that a little. Still a wonderful seem less image. Great work.

multiweb
25-08-2015, 08:08 AM
That's sub zero cool Rex! Awesome vista. The high res is superb. So much details and stuff to peer through. As it's been said, epic mural! To the cool wall. :thumbsup::thumbsup::thumbsup:

Somnium
25-08-2015, 08:15 AM
a huge effort, 60hrs ! well done, the result speaks for itself.

DJScotty
25-08-2015, 08:41 AM
Utterly delightful Rex. Something to aspire to :thumbsup:

Paul Haese
25-08-2015, 08:47 AM
I prefer the first presentation in Astrobin. The full res is ok but too big to really enjoy the vista. Dust has a nice look and colour to it. The field of view is great and I cannot see a panel join in the entire image. Star colours are nice and pastel.

Everything looks good except I think there might be a little too much cyan in your back ground.

Overall I like the image. :)

strongmanmike
25-08-2015, 09:01 AM
Wow!...8 panel mosaic huh? :eyepop: Excellent work Rex, very enjoyable image with nice processing overall, you could perhaps just reduce the green/cyan in the background but great stuff :thumbsup:

And not a decon dot or bright wavelet worm in sight :P

Mike

rustigsmed
25-08-2015, 09:25 AM
WOW Rex, amazing work!!

what a monster project - but you've definitely pulled that off!! worth making a print of that for sure.

Rex
25-08-2015, 10:17 AM
Thanks Troy, for the feedback and comment. Unfortunately at the moment I am using a crappy old 1280x1024 res not calibrated monitor as that is all I have. Hopefully next month will be getting a 28"UHD, hopefully that will solve my ongoing colour issues. lol.



Thanks Mark. appreciated.



Thanks Marc, few small issues to sort out then I will probably print this one.



Thanks Aidan, glad you like it mate.



Thanks Scotty, I have never worked so hard to produce something I was happy with. This image was a slog, but I am reasonably happy with it so worth it in the end.



Thanks Paul, I'm not sure what you mean about the first presentation in astrobin, I have only put one version up there as yet. Unless you mean the version that first appears when you click the link and not the full version when you click the little icon at the top? WOW sorry thinking out loud again..... Thanks again for the comments and feedback, I will definately be revisiting the colour of this one.



Thank you kind sir. Yep colour is a problem, will revisit before I print it. With the sharpening I am a little like you in the respect of not liking the artifacts it can produce. I have overdone it in the past but these days I start low and keep gradually winding it up until I see the first hint and then wind it back one step. Not sure if that's the best way or if there is something I am doing wrong, but I can never seem to get more than about 10 iterations before that point is reached, with either decon or wavelets sharpening.



Thanks Rusty. much appreciated mate.

RobC
25-08-2015, 10:24 AM
That's great Rex. Gives me the inspiration to give mosaicking a try.

Cheers

Rob

Garbz
25-08-2015, 10:37 AM
I don't see anything there which is "far from perfect"

Quite the opposite.

That image blew my mind. What an incredible effort.

Octane
25-08-2015, 10:44 AM
Awesome work, Rex! I know just how difficult mosaics are and this is superb!

This will be one of my targets for next year. I have one panel done. :D

H

Camelopardalis
25-08-2015, 12:59 PM
That's awesome Rex, well done :thumbsup:

graham.hobart
25-08-2015, 01:22 PM
Rex that's a wonderful sight!
What software are you stitching in?
beautiful!
Thanks for showing
Graham

Rex
25-08-2015, 03:10 PM
Thanks Rob, I am glad you like it, and that my images provoke thought among others.



Thanks you very much Chris.



Thanks H. Mate I can't wait to see your mosaic. With the seeing you get and your gear and expertise it will be a cracker.



Thanks Dunk, much appreciated.



Thanks very much Graham. Mate I use Pixinsight for everything from calibration, stacking and final processing as it is the only image software I have. It has some pretty good tools for stitching together mosaics once you work out the process, and how to get around certain problems that invariably crop up when stitching. But there are enough tutorials on the web that you can normally manipulate one of the procedures to suit the current circumstance.

Atmos
25-08-2015, 03:28 PM
Only looked at it on my phone so far but WOW is the word that comes to mind ;)

AstroJason
25-08-2015, 04:52 PM
Wow Rex, that is a huge effort. Love the details in this, your time doing this has really paid off.

IanP
25-08-2015, 06:11 PM
That's great image, Rex.
Even Yoda's walking stick is so crisp .. :einstein:

RobF
25-08-2015, 07:31 PM
Man that is a LOT of effort to get 8 panels looking that good in a mosaic. Hats off to you Rex. Great picture and suspect you may coax a bit more out of it in future years when the urge to do a Sidonio (repro) sets in!

Regulus
25-08-2015, 07:33 PM
I downloaded it and looked at it in Irfanview to see the whole vista.
It's a very good mosaic Rex, and as everyone is saying, the background is a bit washed out with the cyan. There is a lot that comes out when the contrast is improved too.
All up: really nice photo.

Trevor

Rod771
25-08-2015, 09:57 PM
What a project! You've done a really great job Rex! Fantastic effort! :thumbsup:

Rex
25-08-2015, 10:11 PM
Thanks Colin, very much appreciated.



Thank you Jason, I won't lie it was a slog, and several times I almost gave up on it, but am glad I persevered.



Thanks Ian, I'm glad you like it.



Thanks Rob, I am definitely going to revisit this, but will probably wait until I get my new monitor, all going well that will be next month. I tried to adjust the cyan/green tonight and on this monitor it looks totally out of wack so I would be guessing as to where to leave it. Hopefully the new monitor which is supposed to be factory calibrated to within pretty tight specs I will be able to get the colours right first go. Until then I will relay on you guys to tell me. lol.



Thanks Trevor. Hopefully the new monitor will help.



Thanks Rod, it's appreciated.

Rex
26-08-2015, 03:29 PM
Thanks to everyone for the feedback and advice, I realize this is probably still not perfect as on my monitor it now looks very red, but I think it is a step in the right direction, not so blue/green. Let me know how I did at guessing lol. Thanks again for looking. Updated version in the first post.

multiweb
26-08-2015, 03:59 PM
The color balance brings up the blues nicely now.

peter_4059
29-08-2015, 10:09 AM
Amazing dedication Rex and an awesome image to show for it. Shows what is possible with reasonably modest gear if you dedicate time to capturing great data.

Slawomir
29-08-2015, 12:14 PM
Herculean effort and a wonderful result Rex! :thumbsup:

Rex
29-08-2015, 01:38 PM
Thanks Marc. Wish i could see that lol. looks very red on my monitor. had look on the work monitor (uncalibrated and it doesn't look red but the backgrounf does look a little greenish. never mind will fix it when i get my monitor.



Thanks Peter. I have been planning this one since last year. I simply love this object but new I would need a fair amount of data to get anything reasonable with my gear so I just kept pumping out the data in July till the sky told me to stop. Then I roughly stacked it and realised I would need much more data, so I switched to 10min subs for august. Same thing, just kept pumping it untill the cloudstold me to stop.



Thanks Slawomir, I'm glad you like it.

Spookyer
29-08-2015, 05:28 PM
Great work mate, plenty of effort there well rewarded.

RickS
30-08-2015, 05:08 PM
A real marathon effort, Rex, but it has paid handsomely!

Cheers,
Rick.