[Description adapted from NASA APOD: the Crab is now known to be a supernova remnant, an expanding cloud of debris from the explosion of a massive star. The violent birth of the Crab was witnessed by astronomers in the year 1054. Roughly 10 light-years across today, the nebula is still expanding at a rate of over 1,000 kilometers per second] This is a bicolor-rendition in the same style as NGC6888 (linked below in the comments). I have mapped Ha to Red, OIII to blue and created a synthetic green channel mixing the two (15% OIII + 85% Ha). Ha: 20 x 30m (5nm) OIII: 20 x 30m (3nm) total exposure time: 20 hours. Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) Mount: Astro-Physics Mach 1 Scope: Celestron Edge HD 8" (FL: 2032mm) Adaptive Optics Unit: SXV-AO-LF Image Aquisition software MaximDL Registed, Calibrated and Stacked in MaximDL Post Processed with PixInsight 1.8 and Photoshop CS6

LHRGB wide crop Acquired on July 8, 2013 from Adin, CA (GSSP 2013) L: 6 x 20m H: 3 x 20m R,G,B: 6 x 10m each Total exposure time: 6 hours Main Camera: QSI 583 WSG Guide Camera: SXV Lodestar (on OAG) SXV Adaptive Optics unit Mount: Astro-Physics Mach 1 Scope: Celestron EdgeHD 8" (FL: 2032mm) Image Aquisition software MaximDL Registed, Calibrated and Stacked in MaximDL Post Processed with PixInsight 1.8 and Photoshop CS6