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

["bert katzung" <katzung1@home.com>]

Thanks, Mike! I like the RGB-HOT better because of the green stars in the
HOT-only image PLUS the filaments look better resolved in the combination
image.
Bert


----- Original Message -----
From: "Mike Cook, AF9Y" <mwcook@concentric.net>
To: <astro-photo@seds.org>
Sent: Sunday, 25 November, 2001 8:17 PM
Subject: Re: [APML] Veil Nebula in new HOT color space


> Bert and others,
>
>    I should have posted something smaller.  Here's a page that
> fits the more typical monitor size:
>
> http://www.webcom.com/af9y/veilrgbhotsm.htm
>
>
> From:           "bert katzung" <katzung1@home.com>
> To:             <astro-photo@seds.org>
> Subject:        Re: [APML] Veil Nebula in new HOT color space
> Date sent:      Sun, 25 Nov 2001 19:47:30 -0800
> Send reply to:  astro-photo@seds.org
>
> > Hi Mike:
> > Very interesting concept! I have trouble with the mouse-over comparison,
> > however---with the mouse on it, the image breaks up into several
horizontal
> > panels but I don't see any change in color, star size, or anything else.
> > Anybody else having trouble? May be my display adapter, I suppose...
> > Bert
> >
> > Bert Katzung
> > katzung1@home.com
> > www.astronomy-images.com
> >
> > ----- Original Message -----
> > From: "Mike Cook, AF9Y" <mwcook@concentric.net>
> > To: <astro-photo@seds.org>
> > Sent: Sunday, 25 November, 2001 4:15 PM
> > Subject: [APML] Veil Nebula in new HOT color space
> >
> >
> > > 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.
> > >
> > > For best results, it requires narrowband filtering for the Ha and
Oxygen
> > > lines along with at broadband blue filter.  I used the new IDAS
Narrow-
> > > band Nebula filter in combination with the SBIG color filters.  The
> > > resulting image is most interesting and actually appears to more
> > accurately
> > > portray the Ha and Oxygen colors.  I did not care for the resulting
star
> > > colors so I've combined RGB and HOT in an attempt to have the best of
> > > both color spaces:
> > >
> > > http://www.webcom.com/af9y/veilrgbhot.htm
> > >
> > > You can switch between the RGB/HOT and pure HOT images with
> > > a mouse pass-over.  I am most interested in feedback about the result
> > > and any preference you might have between the RGB/HOT and HOT
> > > image.
> > >
> > > Additional information on the HOT color space:
> > >
> > > http://home.att.net/~nightscapes/techniques/HOTcolors/IntroToHOT.html
> > >
> > >
> > >
> > > Mike Cook, AF9Y
> > > http://www.webcom.com/af9y
> > > mwcook@cris.com
> > >
> > >
> > >
> > >
> > > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
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> >
> >
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>
>
>
> Mike Cook, AF9Y
> http://www.webcom.com/af9y
> mwcook@cris.com
>
>
>
>
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