Deep Sky Object in Winter
M1 (Crab Nebula in Taurus)

Date & Time: Dec 6 2013, from 24:47 to 25:30 JST(+0900)
Composed 8 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
CCD Sensitivity...ISO3200

M1 (NGC1952) / Supernova Remnant*
R.A.05h 34m 30.0s (2000.0)
Dec.+22° 01' 00" (2000.0)
Apparent Size6×4'
Real Size12.6×8.34 light yrs.
Distance7200 light yrs.
* May be identified as a Planetary Nebula
(type VI).
M1, The Crab Nebula is positioned just Northwest of zeta Tauri, with a size of about 6 arc minutes. The nebula has lots of stripes spreading outward visible with larger telescopes, this figure gives the name. The distance is about 7200 light years.
The Crab Nebula is a remnant of a supernova, exploded in July 1054. Chinese and Japanese astronomers(?) recorded this event in the ancient literary works. The exploded star, that produced the nebula, brightened up with the visual magnitude of about -5, bright enough to be seen in the daytime for nearly a month. Now, astronomers have discovered a neutron star, an optical pulsar in the center of the nebula.

  Rendez-vous of Saturn & Crab Nebula

M42(Great Orion Nebula)

Copyright(c) 2014 by Naoyuki Kurita, All rights reserved.
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