Re: [APML] DWB111 in Color

["Mike Cook, AF9Y" <mwcook@concentric.net>]

Loke,

   Thanks and yes, I use a separate guidescope (as with all my
images) with the STV guider.

     As with film, the more you stack, the less the noise.  Having
many images stacked in Ha allows much more aggressive processing
without bringing up the noise to a noticeable level.   Actually the right
side of my DB111 image has half the exposure time of the center.
While you can't see it in the web size image, the additional noise
can be seen in the full size image.


Date sent:      	Sun, 04 Nov 2001 12:55:11 -0800
From:           	"tan@home.com" <tan@home.com>
To:             	astro-photo@seds.org
Subject:        	Re: [APML] DWB111 in Color
Send reply to:  	astro-photo@seds.org

> Mike,
> 
>  Very nice shot with extremely good detail. That's quite an exposure time. 
> Do you really see any noticeable benefits of doing 5x60 L h-alphas vs. 
> say 2x60? Also, did you use a separate guidescope for tracking? Thanks.
> 
> Loke
> 
> 
> 
> Mike Cook, AF9Y wrote:
> 
> > I have finally completed a color version of the DWB111 nebula.
> > This one was a real challenge to maintain a balance of star colors
> > and nebula detail.  I ended up using only a 25% level of Ha for
> > Lum.  Total exposure time for this image was 11 Hours:
> > 
> > http://www.webcom.com/af9y/dwb111hrgb.htm
> > 
> > Again, the objective was to obtain something close to film in
> > appearance.  All feedback welcomed including any comments
> > where you think it fell short.  I'm still working the process.
> > 
> > 
> > 
> > Mike Cook, AF9Y
> > http://www.webcom.com/af9y
> > mwcook@cris.com
> > 
> > 
> > 
> > 
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> 
> 
> 
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Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com




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