| M1, NGC1952 The Crab Nebula Constellation: Taurus, Distance: 6,500 light years, Visual Magnitude: 8.4, Diameter: 8 x 8 arc mins Best months at 8:00pm Jan-Apr, 10:00pm Dec-Mar, Max altitude 36 degrees, North |
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| - Imaged on 20090725 - 250mm, 10" F/4.7 Newtonian Reflector - 300 video frames with IR/UV blocking filter at x128 integration - Bahtinov focusing mask - rough polar alignment, waxing crescent moon, poor seeing, elevation about 60 degrees - aligned, stacked and sharpened in Registax 5.0 - levels adjusted in Photoshop 7.0 |