Re: [APML] OT: M5

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

Hi John,
Thanks. The synthetic luminance is just a sum combine
of the R,G,B. The stellar match is what makes it succeed.
Here's a reprocessed image of M13 with the same
technique but I added a little deconvolution to tighten
it up.
http://www.robgendlerastropics.com/M13.html
Rob Gendler
Email: robgendler@att.net
Web site: http://www.robgendlerastropics.com/
----- Original Message -----
From: "John C. Mirtle" <spampit@shaw.ca>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Sunday, July 06, 2003 2:08 PM
Subject: Re: [APML] OT: M5


> Robert,
>     Both M5 and M92 look great - the difference between pop I and II is
very
> distinct. Very nice! The colour balance looks excellent. How exactly do
you
> create a synthetic luminance? Do you simply add your RGB's, or average,
> median....?
>
> John Mirtle
> Calgary, Ab. Canada
>
> ----- Original Message -----
> From: "Robert Gendler" <robgendler@worldnet.att.net>
> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
> Sent: Sunday, July 06, 2003 8:03 AM
> Subject: [APML] OT: M5
>
>
> This one is far south for me but all in all not half bad.
> http://www.robgendlerastropics.com/M5.html
> Lately many globulars done with CCD this one shows
> clearly the two populations of stars that exist apparently
> in most of these clusters.
> This image was created using a synthetic luminance derived from
> the RGB data. This seems to be the way to go when
> processing globulars. Enjoy.
> Rob Gendler
> Email: robgendler@att.net
> Web site: http://www.robgendlerastropics.com/
>
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