M1, Supernova remnant in Taurus

 

(Click on image for full size version)

 

Description: Also known as the Crab nebula, this is the remnant of a supernova that was observed in 1054.  Near the center of the object is a neutron star, 30 Km in diameter and approximately the mass of our sun that is thought to rotate at 30 times per second!  This star is the lower right of the double star visible in the center.
 
Exposure Data: 11/13,14/2002.  LRGB: 16x10m, 8x7m, 8x7m, 8x10m, RGB 2x2. -15C, 1.0 arc-sec./pixel.
 
Processing: Acquired via script with Maxim, reduced and aligned, gradient correction in Mira, L: 3xCCDSharp, RGB combined 1.0:0.9:1.05 in Maxim, LLRGB assembly, curves, levels, USM other processing in Photoshop.
 
Optical System: 10 Ritchey-Chretien @ F/7.3, ST-8E USB NABG/CFW-8A CCD camera, auto-guided, Paramount ME mount.
 
Comments: Seeing was 3.0 arc-sec.   The colors were carefully calibrated with a G2 star.  All linear processing was used (no curves) in an attempt to bring out the central region color.  LLRGB combine was used to maximize color SNR.  L layering was used to minimize the star halos in the nebula region.  Finally, the central region was reduced in level and increased in saturation. Here is the link to the more neutral version.