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Saturday, February 18, 2012

M42, Orion Nebula

A rare, reasonably clear night occurred last night which I decided to take advantage of.  I set up at my dark sky site and took a few pictures.  I also photographed through the telescope (my 70mm f/10 Meade refractor), which I have never done before.  Granted, the exposures were short, but M42 is bright.  I shot about 20 or so 15 second exposures and produced this image:


Not great detail, but if you look closely, I believe I successfully resolved the trapezium in this image, which I believe is a first for me.  Whats up with the funky little tail on the bright star at the bottom of the frame.

I have placed the raws of the images on my webserver, at http://kd0ar.homeip.net/raws/2011-02-19

I also shot the old fashioned way, using the 300mm zoom camera lens, which seems to have more detail in the nebulocity than the one above.  I used about 200mm of focal length, also about 20 raw frames, each 30 seconds in exposure, f/8.  I also drizzled 3X in Deep Sky Stacker.


The one artifact I always seem to get with this object while using the camera lens is the dark halos around the stars.  I havent figured out how to get rid of it yet.  Also, its funny how the colors are so different between these 2 images.  I used the same camera settings and I did not alter the colors, except to enhance the colors that the camera picked up.  I did no weird color balance or no changing of colors.

I have a 6" Newt and a CG5 mount on order, and should be here this coming Tuesday (Feb. 21).  I will be looking forward to using it to photograph some DSO's.

I have also been learning new processing techniques.  There is an excellent yahoo group out there that teaches astro processing in Photoshop.  http://tech.groups.yahoo.com/group/dslr_astro_image_processing/
It appears to be a new group, and seems to be growing quickly.  These guys will help you get those textbook quality photos, and I hope that you begin seeing improvements in my work.


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