M42, Imaged with an AP 10" f/14.6 Maksutov-Cassegrain,
an AP 180 f/7 Refractor and an AP 235 f/4.3 Maksutov-Newtonian
This image is a combination of Roland Christen's core shot of M-42, an RGB color image by Trent Kjell with
an AP 180 f/7 EDF refractor and an H-alpha image by Mark Jenkins with an AP 235 f/4.3 Maksutov-Newtonian.
The data for the images is rather complex, but approximately 10
minutes total for each RGB exposure, and a Luminance layer consisting
of 70 minutes total of H-alpha exposure. Added to the middle portion
is the 10" Mak image with its own exposure data which can be seen here.
Composite by Roland Christen of Astro-Physics
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