The O.A.S. Astrophotography Gallery

A place for members' images...

Home > Stars, Nebulae and Galaxies > Messier Objects
Return to the thumbnail page FILE 172/317 Return to start See previous file See next file Skip to end
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:476 times
URL:http://gallery.orpington-astronomy.org.uk/displayimage-734-_M81_and_M82_.html
Favorites:Add to Favorites