Re: [APML] Going Deep for the Iris

["Robert Gendler" <robgendler@worldnet.att.net>]

Chuck,
I think the problem is that I added some older lower
res data around the perimeter to get a more pleasing composition.
If you look close you can see the transition. I think the clipping is
coming from that data. If you select the inner 90% of the image 
and check the histogram I think you'll find its OK. Please do and
let me know.

Rob Gendler
email: robgendler@att.net
Web Site: http://www.robgendlerastropics.com
----- Original Message ----- 
From: "Chuck Vaughn" <aa6g@aa6g.org>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Saturday, July 09, 2005 7:25 PM
Subject: Re: [APML] Going Deep for the Iris


> Rob,
> 
> Now that I got my color space stuff squared away (I think) and am  
> viewing your sRGB image in sRGB color space on my monitor, I have to  
> go back to a very basic image adjustment question.
> 
> Why is the black end of the green and blue channels chopped off? I  
> estimate 11 or 12 levels are missing from those channels by looking  
> at the histogram. The image looks much better here if I raise the  
> bottom end on those channels.
> 
> Chuck
> 
> ----------------------------------
> 
> 
> > Hi all,
> > Here's a 13 hour effort on the Iris. It probably needs more <g>.
> > http://www.robgendlerastropics.com/NGC7023NM.html
> >
> > Enjoy!
> > Rob Gendler
> > email: robgendler@att.net
> > Web Site: http://www.robgendlerastropics.com
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo
_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo