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M81 and M82 Better composition however the evening was blowy and cloudy which has reduced the sharpness. Also I think the focus was off a bit. Cropped top and bottom. 23x 4 min subs and 4 darks and bias frames, no flats. Artificial gradient removal done by blurring duplicate image layer and subtracting it. Stars were rounded and sharpened using Astro plugins 0.6 from http://www.hennigbuam.de/georg/gimp.html. Link-words: Messier Galaxy

M81 and M82

Better composition however the evening was blowy and cloudy which has reduced the sharpness. Also I think the focus was off a bit. Cropped top and bottom.
23x 4 min subs and 4 darks and bias frames, no flats. Artificial gradient removal done by blurring duplicate image layer and subtracting it. Stars were rounded and sharpened using Astro plugins 0.6 from http://www.hennigbuam.de/georg/gimp.html.

Rate this file (Current rating : 3.3 / 5 with 3 votes)
File information
Filename:M81_M82_2_1_20080323_Beckenham_pf_fr63_iso800.jpg
Album name:Duncan / Messier Objects
Rating (3 votes):33333
Link-words:Messier / Galaxy
Image date, time and location:Monday 23 March 2009 23:00PM Beckenham
Telescope aperture and focal ratio:Meade LX90 200mm f10 reduced to f6.6
Camera and filters used:Minolta Dynax D7, Orion Skyglow SCT filter, Baader Alan Gee II Telecompressor
Processing applied:Minolta RAW files processed in Deep Sky Stacker and The Gimp
Filesize:1145 KiB
Date added:Mar 25, 2009
Dimensions:1305 x 833 pixels
Displayed:475 times
URL:http://gallery.orpington-astronomy.org.uk/displayimage-734-_M81_and_M82_.html
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