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M1: Crab Nebula in Taurus

RA = 5h 34m, Dec = +22 deg 00 min

Date & Site:

Imaged on 11/25/13; Runningman Observatory, Carlsbad, CA

Average seeing; Temperatures in low 50's; 70% humidity


Telescope: Astro-Tech 8" RC (f/8 1625 mm fl)

Mount: Losmandy G-11 with Gemini
Camera: ST-10XME; CFW10 with Astrodon filters;


Exposures: 12 x 15 minute subexposures in Ha (3nm) for total of 3 hours

M1 is a supernova remnant. First recorded by Chinese astronomers in 1054 as a bright "star" visible during the day for several weeks following the supernova explosion. At the center of the nebula lies the Crab Pulsar, a neutron star only 28–30 km across, which emits pulses of radiation from gamma rays with a spin rate of 30.2 times per second. The nebula was the first astronomical object identified with a historical supernova explosion.

Located 6,500 light years away

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