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MikeODay

Bright Nebula NGC 6357 in Scorpius - colour balance adjusted

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Bright Nebula NGC 6357 in Scorpius 

{ Post edited to include new image with adjusted colour balance ( blue level slightly increased in highlights and mid tones to improve colour balance of stars) }

new:

image.jpeg

original:

image.jpeg

( clidk on image to see larger )

NGC 6357 in Scorpius is a diffuse nebula discovered in 1837 by John Herschel and is around 400 light years wide and about 8,000 light years from Earth. 

I captured a few subs NGC 6357 over the weekend but the cloud kept coming over so I gave up and went back to my old data from 2 years ago.  This image is the result of applying my current workflow to the old data.  

Details:

Skywatcher Quattro 10" f4 Newtonian.
Skywatcher AZ Eq6 GT Mount.
Orion 80mm f5 guide scope and auto guider - PHD2. .
Baader MPCC Mark 3 Coma Corrector,
UHC-S 'nebula' filter.
Nikon D5300 (unmodified).
Field of view (deg) ~ 1.35 x 0.90.
UHC-S - 100 x 100 sec ISO800
(14bit NEF, Long Exp. NR on).
Pixinsight and photoshop.

5 October 14
re-processed 31 July 2016

Links:

https://500px.com/mikeoday

http://photo.net/photos/MikeODay

 

Edited by mike005
Show new image alongside original. New image has been tweaked to improve colour balance in stars ( slightly increase blue levels )
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20 minutes ago, astro mick said:

Very nice image Mike.

Mick.

Thanks Mick, much appreciated.

Cheers

Mike

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Today I noticed that the colour balance of the stars was off.  The original post has been edited to add a new image alongside the original.. The change is a slight increase in the blue levels of the mid and highlight tones.

image.jpeg

Edited by mike005
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