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Old 29-09-2013, 03:54 PM
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Helix in Bicolour Narrowband

Hi All,

The Helix Nebula in Ha, Ha, OIII, OIII mapped as LRGB.

Six hours Ha, two hours OIII.

Share and enjoy.

Larger version here

Cheers
Stuart
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  #2  
Old 29-09-2013, 04:15 PM
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Nice detail Stuart. There looks to be some sharpening artefacts around a few stars inside the nebula. Not sure if you have sweet those. Colour is good too.
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Old 29-09-2013, 04:54 PM
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A very nice Helix, Stuart! Was that at f/3.6 with the ASA?
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Old 29-09-2013, 04:58 PM
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Quote:
Originally Posted by RickS View Post
A very nice Helix, Stuart! Was that at f/3.6 with the ASA?
Hi Rick,

Yep, whatever the native FL of the ASA is with the corrector, which I believe to be f/3.6.

Cheers
Stuart
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Old 29-09-2013, 05:00 PM
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Quote:
Originally Posted by Paul Haese View Post
Nice detail Stuart. There looks to be some sharpening artefacts around a few stars inside the nebula. Not sure if you have sweet those. Colour is good too.
Hi Paul,

I noticed these just as I was about to post. I'm painting my house, so time off painting for processing images is short (I'm on a break now), might fix them up tonight.

Cheers
Stuart
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Old 29-09-2013, 05:10 PM
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Yeah a tad over sharpened Stuart but looking pretty good otherwise

Mike
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Old 29-09-2013, 05:26 PM
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Thumbs up

Wow, it is splendid result and very good processing. Congratulations about this beautiful image
Franck
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  #8  
Old 29-09-2013, 06:00 PM
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A terrific image. The sharpening seems to have been done globally and its better to do it selectively. Normally you would not want your stars sharpened. Also dim areas as it increases grain and noise.

Greg.
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Old 29-09-2013, 06:22 PM
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That's veRy good Stuart, I'm finding I need a lot more hrs than you to get the same depth and extension . The f3.5 sure helps there.
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Old 29-09-2013, 07:59 PM
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Pretty darned nice for an antipodean image

Cracker actually.
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Old 29-09-2013, 08:08 PM
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Looks great to me. Nice looking scope as well. I googled it.
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Old 29-09-2013, 10:03 PM
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Nice image, Stuart
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Old 29-09-2013, 10:41 PM
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Great detail Stuart.

Ross.
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  #14  
Old 29-09-2013, 10:48 PM
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Fantastic image Stuart. Nailed the outer shell well.
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