Re: [APML]the real M13

["Paul Howell" <paul@howell-ltd.com>]

Tony -

Please pardon the CCD intrusion, but I thought I'd follow up
on this thread.

In general I think that most folks underexpose globulars.
They are really much, much bigger than generally
represented, as you demonstrated. I recently shot M13 also
and though ten minutes or so of luminance would have
sufficed, I went 150 minutes. Here is the result:

http://howell-ltd.com/Astronomy/html/M13.html

-P


>     Since I last posted the CCD image of M13 I have been
futzing around with whatever PS tools allowed me to make a
bigger and better mess out of the image... my original goal
was to see exactly how far out M13 went... in other words,
using the incredible sensitivity of the CCD, see what I
could record from the glob. This time I went longer on the
exposures and used anti-blooming...
>
>      There are two images, one as we "normally" perceive
M13 (which for aesthetics I prefer...) and one below it,
same scale, same size, that shows more of the "real" M13...
>
>       I have circled the same star in the lower right
corner of each image to give you a frame of reference...
>
>       http://www.astrophoto.com/M13combo.jpg
>
>      Still working on the color data... cropped the red
and green frames incorrectly so now we get to start all over
again...


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo