Re: [APML] Veil Nebula in new HOT color space

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

Tom,

    Yes, I have done the color chart calibration as well as using G2V
stars for white point when available.  But that was for RGB images.
With the HOT image, I did the background calibration but nothing
for the white point.  At present, I really don't have enough calibration
data with the narrow band filtered images to where I am.  Maybe
Thor is monitoring and can respond to the calibration question.



From:           	"Tom & Lou Krajci" <krajcit@3lefties.com>
To:             	<astro-photo@seds.org>
Subject:        	Re: [APML] Veil Nebula in new HOT color space
Date sent:      	Sun, 25 Nov 2001 21:09:56 -0700
Send reply to:  	astro-photo@seds.org

> From: "Mike Cook, AF9Y" <mwcook@concentric.net>
> 
> > I've been experimenting with a new color space for astrophotography
> > proposed by Thor Olson called "HOT".  HOT stands for
> > Hydrogen-Oxygen-Thermal mapping of the normal RGB channels.
> 
> Did you do any previous test imaging for color calibration purposes (image a
> white card that has moonlight falling on it, and scale your H-O-T values to
> give a 'white' result...or image G2V stars?)...or is that an improper
> question for this kind of color imaging?
> 
> Tom Krajci
> 
> 
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Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com




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