ICEINSPACE
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Moon Phase
CURRENT MOON
Waxing Gibbous 71.2%
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22-01-2008, 09:12 PM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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M83
Between the perpetual rain on the east coast and current full moon, I took the time to re-process this one. Hope you like it.
http://www.atscope.com.au/BRO/images/m83repro.jpg
Last edited by Peter Ward; 22-01-2008 at 09:49 PM.
Reason: typos
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22-01-2008, 09:35 PM
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Spam Hunter
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Join Date: Jun 2005
Location: Oberon NSW
Posts: 14,438
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I do like it, Peter! Thanks for sharing. (I'd off some constructive criticism if I could think of something worthwhile to say! 
Al.
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22-01-2008, 09:40 PM
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Tripping in Space
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Join Date: Oct 2007
Location: Sydney
Posts: 500
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Stunning mate, stunning!
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22-01-2008, 10:13 PM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
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A very beautiful image of one of our most beautiful southern galaxies.
Stunning result, Peter.
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22-01-2008, 10:40 PM
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Support your local RFS
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Join Date: May 2006
Location: Wamboin NSW
Posts: 12,405
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Wow, that's pretty special Peter. I really like the dust lanes and the detail in the spiral arms.
Cheers
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23-01-2008, 12:46 AM
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Registered User
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Join Date: Jan 2008
Location: Santiago, Chile
Posts: 170
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Beautiful image ! Very nice image processing
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23-01-2008, 12:58 AM
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Doug Edwards
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Join Date: Sep 2007
Location: Brisbane
Posts: 677
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Stunning image Peter 
The detail in the arms is awe inspiring.
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23-01-2008, 07:37 AM
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Every photon is sacred !
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Join Date: Oct 2007
Location: Coonabarabran
Posts: 1,071
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Stunning image Peter, plenty of detail and colour.
What processing did you use as I couldn't help but notice some stars appear as 'donuts'? 
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23-01-2008, 09:36 AM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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I did use a localized high pass filter which is no doubt what you are seeing......I can live with it
Quote:
Originally Posted by theodog
I couldn't help but notice some stars appear as 'donuts'? |
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23-01-2008, 10:06 AM
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Registered User
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Join Date: Aug 2005
Location: Melbourne
Posts: 1,696
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Hi Peter,
It's very nice, but...
It's a little too blue for my liking.
No I'm not just trying to start an argument, I see no reason why the Ha regions in external galaxies should be a different colour than those in our own.
This is one of the reasons I struggle with Galaxy shots, I can never seem to get the colour balance right.
OK, can most of that, I just loaded the shot into Photoshop, it comes out a different colour!
I struggled to get a nice shot of M83 last year, finally got something half decent, but never in this league. Just wish you could eliminate the diffraction spikes!
Cheers
Stuart
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23-01-2008, 11:17 AM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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Managing colour space is a perennial challenge. Photoshop has a multitude of proofing profiles. Small variations in hue are reasonable, and probably unavoidable....but I think we've covered that elsewhere
The diffraction spikes are built into the 'scope
I sometimes put bits of string over a perfectly good refractor objective to get them eg:
http://www.atscope.com.au/newsky/ngc6231rgb.jpg
Quote:
Originally Posted by rat156
OK, can most of that, I just loaded the shot into Photoshop, it comes out a different colour!
I struggled to get a nice shot of M83 last year, finally got something half decent, but never in this league. Just wish you could eliminate the diffraction spikes!
Cheers
Stuart
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23-01-2008, 12:42 PM
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Billions and Billions ...
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Join Date: Mar 2007
Location: Quialigo, NSW
Posts: 3,143
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Quote:
Originally Posted by Peter Ward
Managing colour space is a perennial challenge. Photoshop has a multitude of proofing profiles. Small variations in hue are reasonable, and probably unavoidable....but I think we've covered that elsewhere |
Maybe a bit bluer than I'd make it, but a spectacular image Peter. I'm still dreaming of taking shots like that!
Quote:
Originally Posted by Peter Ward
The diffraction spikes are built into the 'scope
I sometimes put bits of string over a perfectly good refractor objective to get them eg: |
Oh no, not another imaging equipment artefact lover!! Maybe you should just paint them into the objective to save time and so it becomes a "real" artefact!  
Cheers, Marcus
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23-01-2008, 02:26 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,429
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great image - but where did you find the clear skies to take that?
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23-01-2008, 02:44 PM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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Houghy,
Thanks.
As I mentioned in my original post, this is (about one year old) data I reprocessed while sitting under the clouds.
I see a few patches of blue outside now....must be a full moon tonight!
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23-01-2008, 04:36 PM
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Registered User
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Join Date: Jan 2005
Location: Newcastle, NSW, Australia
Posts: 4,116
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Yep great image there. Very deep.This is all we can do of late, reprocess past images with the unending cloud.
Scott
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23-01-2008, 04:50 PM
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Registered User
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Join Date: Oct 2006
Location: Australia
Posts: 4,646
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Great image Peter with lots of fine detail. Love the small surrounding galaxies. I realy shows you have skill to pas on to the rest of us mere mortals.
Great work
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23-01-2008, 08:19 PM
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Narrowfield rules!
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Join Date: Nov 2006
Location: Torquay
Posts: 5,065
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Done on a box browny and a Tasco 50mm with string on the front for diffraction spike effect methinks. Are there real stars there, or were they Photo shoped in? ;-).
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23-01-2008, 08:32 PM
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Galaxy hitchhiking guide
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Join Date: Dec 2007
Location: The Shire
Posts: 8,484
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Box brownie *deluxe* 
Quote:
Originally Posted by Bassnut
Done on a box browny and a Tasco 50mm with string on the front for diffraction spike effect methinks. Are there real stars there, or were they Photo shoped in? ;-).
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23-01-2008, 08:45 PM
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The 'DRAGON MAN'
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Join Date: Jan 2005
Location: In the Dark at Snake Valley, Victoria
Posts: 14,412
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I opened the image and my 1st thought was, "Yuk! it's too purple".
Then I read everyone elses posts and some say it's too blue, so it must be my monitor.
Nice image. Nearly like Erics (ezystyles).
If it was a year ago, what gear did you use? (scope/camera etc)
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23-01-2008, 09:16 PM
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Narrowfield rules!
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Join Date: Nov 2006
Location: Torquay
Posts: 5,065
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Dont ask Ken, you know the answer will give you a head ache ;-).
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