Re: [APML] M13 - My first posted image to APML

[Alen Koebel <alen_koebel@yahoo.ca>]

I think I fixed the red cast in the sky background
(most of it, anyway). I also upped the color
saturation a notch to bring out the differences in
the star colors better. 

http://www3.sympatico.ca/the.koebels2/Astronomy/m13.htm

I'm sure there is much more I could do to improve 
this. For instance, a friend suggested a technique of
blending {lighten) a slightly blurred copy to bring
out the fainter stars at the edge of the cluster, 
without the result looking too grainy (which is a
problem I'm having now when I try to adjust the
curves on all of my single exposures - I don't have
multiple shots of these objects yet). Is that the
best way to minimize grain or should I experiment
with something like SGBNR? And if I do use SGBNR,
when is the best time to apply it? Before all other
operations, before only certain operations or after
I do everything else?
 
> -----Original Message-----
> From: Chris Cook [mailto:ccjd@ix.netcom.com]
> Sent: Thursday, April 03, 2003 12:18 AM
> To: Discussion of Film Astrophotography
> Subject: Re: [APML] M13 - My first posted image to
> APML
> 
> 
> Hi Alen -
> A great first image post.  Nicely done!
> You captured some nice detail down in the core
> region.
>  Color balance looks a bit too red in the
> shadows on my monitor. Your guiding looks good, and
> manually done to boot! :-)
> 
> Chris
> 
> ----------------------------------
> Chris Cook
> Astronomical & Nightscape Photography
> www.abmedia.com/astro
> 
> 
> -----Original Message-----
> From: Alen Koebel <alen_koebel@yahoo.ca>
> To: APML <astro-photo@seds.org>
> Date: Wednesday, April 02, 2003 11:23 PM
> Subject: [APML] M13 - My first posted image to APML
> 
> 
> >Don Spencer's post of his M13 shot, an action he 
> >said was inspired by all the great images appearing
> >here, inspired me in turn to finally put one of 
> >my shots on a web page. It is also of M13, which
> >seemed easier for a neophyte like myself to process
> >than other images I have taken (and which still 
> >await processing). This is my first ever shot of
> M13,
> >taken last August. The exposure was only 15
> minutes,
> >on Elite Chrome 200, and I didn't spend much time
> >processing it - just contrast stretching and some
> >sharpening. There is probably much more I could do
> >to improve it, but I haven't learned how yet! There
> >are actually two images here, one a closeup:
> >
>
>http://www3.sympatico.ca/the.koebels2/Astronomy/m13.htm
> >
> >Chris, if the formatting of the page looks familiar
> >it's because I "borrowed" one of your pages and
> edited
> >it. I know next to nothing about HTML and your
> pages
> >looked both elegant and simple. I did change the
> >fonts, background color, etc. Can we call this an 
> >homage? It's just to get me started - I'll change
> it
> >further as I learn more.
> 
> 
> 
>
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