Allan's Deepsky

Ring Nebula

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Ring Nebula
Captured from backgarden using Orion Starshoot DSMI-II CCD camera
Posted by Allan on May 16, 2010 Full Size|

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3 Comments

Reply Doug
2:45 PM on May 17, 2010 
Allan says...
If you levels in photoshop you can get rid of most the pollution. Set the black point and set the white point on a G star if there is one in the shot.

Allan

Allan,

Thanks for the tip. To date I've messed around with the levels using both Photoshop Elements and Paintshop Photo Pro X3, which I've just bought, but with limited success as it helps reduce the ambient noise but not the sodium light colour. I don't think running at ISO800 on the DSLR helps either wrt noise.

Doug
Reply Allan
8:32 PM on May 16, 2010 
Doug says...
Allan,
Looks like we've both spent time targeting (and freezing) the same subject from our respective backgardens. How much processing have you done to yours as there is no apparent light pollution or background noise? I have the problem that with M57 being towards the east, the light pollution from Hull is pretty intense. Things should improve as Lyra tracks towards the zenith over the next couple of months.

Doug

If you levels in photoshop you can get rid of most the pollution. Set the black point and set the white point on a G star if there is one in the shot.

Allan
Reply Doug
2:56 PM on May 16, 2010 
Allan,
Looks like we've both spent time targeting (and freezing) the same subject from our respective backgardens. How much processing have you done to yours as there is no apparent light pollution or background noise? I have the problem that with M57 being towards the east, the light pollution from Hull is pretty intense. Things should improve as Lyra tracks towards the zenith over the next couple of months.

Doug