Re: [APML] New HaO3-RGB of Witch's Broom (NGC6960)

["Paul M. Rybski" <rybskip@idcnet.com>]

Dear Ray,

      This is a great effort!  Your plate scale is outstanding. 
Assuming that you coded the O3 emission as green, I am wondering why 
much of what is probably O3 emission comes out almost white on my 
monitor.  Any comment?

Paul Rybski, Physics, UW-Whitewater

>This image was posted on the apug and I am reposting it here. Thought you all
>might enjoy the view of this object:
>
>
>Here is a new image of the Witch's Broom (NGC6960) part of the Veil nebula.
>I used Custom Scientific Halpha + O3 filters plus conventional RGB data. I
>used
>my ST-10XE and AP155 EDFS at f/5.2 (or so) on my AP1200GTO mount. I haven't
>counted up the number of hours exposure total but I'm sure it is more than
>20!
>
>http://www.gralak.com/Astro/NGC6960-AP155-ST10XE-HaO3RG.jpg
>
>-Ray Gralak
>
>
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