NGC 3521 Black & White Image
Copyright © 2011
NGC 3521 in the constellation Leo
Distance: 35 million light years.
Size: Not available
Camera: SBIG ST-2000XM
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Losmandy G11 with Gemini Control with Advanced Telescope Systems portable pier
Images: 21 luminance @ 5 minutes each for a total exposure time of 105 minutes.
Date: February 11, 2008
Software: Camera and guider control - MaximDL, calibration, stacking, & creation of
color image - CCDStack, further processing in Photoshop CS2.