NGC 1491 in CFHT Palette
Copyright © 2011
NGC 1491, Emission nebula in the constellation Perseus in CFHT color palette
Distance: 11,000 light years.
Camera: SBIG ST-2000XM
Telescope: Astrophysics Starfire 140 EDT F7.5
Mount: Astro-Physics Mach1 GTO with Advanced Telescope Systems portable pier
Images: Using the narrowband CFHT color palette 58 sub images @ 15 minutes each of 23 Ha, 12 OIII,
& 23 SII for a total exposure time of 14.5 hours.
Date: October 18 to 20, 2008
Software: Camera, mount, and guider control - CCD Commander & MaximDL, calibration and stacking - CCDStack, further processing in Photoshop CS4.