Copyright © 2009 Larry Phillips
M1, Crab Nebula, Supernova remnant, SNR, in the constellation Taurus.
The Chinese observed this in 1054 AD and was evident to the Anasazi Indians. It was visible for 23 days in dayling and 653 days as a naked eye object at night.
Distance: 1000 light years.
Size: N/A
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 CFHT palette the exposure was 61 sub images @ 15 minutes each of 21 Ha, 19 OIII, and 21 SII for a total exposure time of 13 hours and 50 minutes.
Date: January 2009
Software: Camera, mount, and guider control - CCD Commander & MaximDL, Calibration and stacking - CCDStack, further processing in Photoshop CS4.