[APML] LRGB and IC1805 Redo

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

I've reprocessed my IC 1805 according to the helpful comments
made by Volker and Chuck and others.
I think the color is better and the image isn't blocked up anymore.
Any comments are appreciated. The image is at
http://robgendler.astrodigitals.com/1805.html
As far as LRGB technique I think people should be careful about
condeming it based on one flawed image. The problems with my
first image weren't due to LRGB or CCD or photoshop. It was my processing
(sleep deprivation probably didn't help much <G>). Also IC1805 isn't a
traditional LRGB. The luminance is a high contrast H-alpha image rather than
an ordinary greyscale image. H-alpha tends to wash out the color.
Basically the contrast needed to be cut back a bit.
You can see many LRGB images on my web site where the
color is not washed out.
To respond to Chucks inquiry about RGB's with CCD here are a few
http://robgendler.astrodigitals.com/Trap.html
http://robgendler.astrodigitals.com/6960.html
http://robgendler.astrodigitals.com/VeilMos.html
http://robgendler.astrodigitals.com/6559.html
Its possible to do plain RGB with CCD's and amateur equipment
but good results are obtained only with bright objects. Professional
RGB images are made with large aperture scopes so adequate S/N can be
obtained easily. With dim objects and small aperture scopes S/N is severely
compromised
when filters are used and image quality suffers. LRGB is a technique that
offers the amateur a chance to image dim objects in color using relatively
small aperture
instruments.
Rob Gendler
Email: robgendler@att.net
Web site: http://robgendler.astrodigitals.com



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