M1 - Crab Nebula

M1LRGBa(500).jpg (46681 bytes)

Object Type: Supernova remnant
Constellation: Taurus
Magnitude: 8.4
 6' x 4'

As its number suggests, M1 was the first object catalogued by Charles Messier in 1758. The nebula is the remnant of a supernova that was visible to the naked eye in daylight in 1054.

Equipment: 14" Meade LX200R/ST-10XME/Astrodon LRGB filters/Paramount ME
F-ratio: f/6.5
Exposures: LRGB: L 10 x 5 minutes, binned 2x2: R 8 x 5 minutes: G 8 x 5 minutes: B 8 x  5 minutes: RGB binned 3x3
Date: January 12, February 15, and March 9, 2007
Location: Landers, California, USA
Technical Notes:
Individual exposures were obtained using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0. A high-pass filter with a radius of 4 pixels was selectively applied to a copy of the luminance image. A copy of the RGB image was combined with the original using Soft Light to enhance color.

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