ICEINSPACE
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Moon Phase
CURRENT MOON
Waning Gibbous 85.4%
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15-07-2011, 10:15 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,183
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NGC6188 14.5 hour mosaic
I took this one a while ago but one panel had considerably less exposure than the other. I took more images a while ago and only just now caught up with the processing.
2 panel mosaic, HaLRGB 14.5 hours total.
CDK17, Proline 16803, Paramount ME.
http://upload.pbase.com/gregbradley/...36437824/large
Greg.
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15-07-2011, 10:16 PM
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ze frogginator
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Join Date: Oct 2007
Location: Sydney
Posts: 22,079
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15-07-2011, 10:36 PM
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IIS Member #671
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Join Date: Dec 2005
Location: Canberra
Posts: 11,159
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Mate, that, along with your widefield version of this, are probably your best images, yet.
Daaaamn! 
H
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15-07-2011, 10:47 PM
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Registered User
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Join Date: Apr 2007
Location: Cherrybrook, NSW
Posts: 5,013
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Fantastic Greg.
What a beautiful photo!
Ross.
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15-07-2011, 10:48 PM
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Registered User
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Join Date: Jan 2008
Location: Werribee, Australia
Posts: 1,053
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Wow!
Darren
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16-07-2011, 12:52 AM
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Registered User
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Join Date: Feb 2009
Location: Inkom, ID USA
Posts: 589
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Stunner, Mate!!
Tom
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16-07-2011, 07:18 AM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,183
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Quote:
Originally Posted by multiweb
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Thanks Marc. After the AAIC I decided to lift the bar on my images and go for longer/deeper versions of everything. This was taken before it but it is quite a long exposure.
Quote:
Originally Posted by Octane
Mate, that, along with your widefield version of this, are probably your best images, yet.
Daaaamn!
H |
Gee thanks Humi. Which widefield is this - is it this one?
http://www.pbase.com/gregbradley/image/124761790
I also did one with the TEC180.
Quote:
Originally Posted by Ross G
Fantastic Greg.
What a beautiful photo!
Ross.
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Thanks Ross. Mosaics really add something and I think its a direction I want to head in very often.
Quote:
Originally Posted by desler
Wow!
Thanks for that. I am glad you liked it.
Darren
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Quote:
Originally Posted by Tom Davis
Stunner, Mate!!
Tom
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Thanks Tom. That means a lot.
Greg.
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16-07-2011, 07:55 AM
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Big Scopes are Cool
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Join Date: Jun 2007
Location: SE Tasmania
Posts: 4,574
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Beautiful image Greg. Really like how you've captured the transition from light around the bright stars to the dark dust on the right.
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16-07-2011, 09:47 AM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,183
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Thanks Peter.
It was a lesson in making sure each panel has the same exposure time for me. Perhaps there are times when you can get away with different exposure times but this wasn't one of them.
Another problem with mosaics with long focal length is different seeing levels on different nights.
It all makes mosaics just that much harder to do.
Photoshop CS4 and above make mosaics though relatively easy. Just process each panel the same way and let Photoshop stitch it then perhaps a few stuble tweaks - especially correcting any gradients.
This was not done with luminance then RGB separately but rather 2 images processed the same way then stitched. It may not be a good way for a large panel mosaic though and I'll use the luminance layer as one mosaic then match the rgb to it approach.
A few gradient removal techniques will help a lot. There are several.
Greg.
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16-07-2011, 10:28 AM
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Registered User
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Join Date: Apr 2006
Location: Warrnambool
Posts: 12,797
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You guys get cleaver by the day, how do you do that stuff, beautiful piece of work.
Leon
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16-07-2011, 10:42 AM
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Let there be night...
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Join Date: Aug 2006
Location: Hobart, TAS
Posts: 7,639
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Yikes Greg! Very nice indeed! I'd love to see it larger than what PBase gives you. There's some real depth to that image. 
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16-07-2011, 11:13 AM
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Registered User
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Join Date: Aug 2010
Location: Canberra
Posts: 3,654
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Very nicely done Greg but it would be nice to see it in a larger size.
Cheers
Steve
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16-07-2011, 11:51 AM
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Registered User
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Join Date: Jan 2006
Location: E.P. S.A.
Posts: 4,963
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Wonderful view Greg, good to see you getting such results with your equipment. All the best.
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16-07-2011, 12:01 PM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,674
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I agree with Chris, love to see a larger version than you have made available..you know, most images look ok small  .. but its clearly a good result from what can see anyway
Mike
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16-07-2011, 12:14 PM
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Registered User
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Join Date: Mar 2005
Location: Sydney
Posts: 5,151
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Very nice work Greg.
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16-07-2011, 12:43 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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Cor! what a beauty
Top stuff Greg
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16-07-2011, 05:47 PM
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Registered User
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Join Date: Apr 2007
Location: Thornlands, Brisbane.
Posts: 1,346
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Lovely gas structure and a beautiful area with fantastic detail.
John.
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16-07-2011, 06:18 PM
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i lurk...
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Join Date: Jun 2010
Location: Sydney
Posts: 75
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Farrrrrrr
Nice one!
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16-07-2011, 06:56 PM
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Registered User
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Join Date: Oct 2006
Location: Australia
Posts: 4,646
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Very nice Greg, you are becoming an imaging machine.
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16-07-2011, 10:22 PM
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Registered User
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Join Date: Oct 2008
Location: Sydney
Posts: 1,809
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Epic!
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