M1 – The Crab Nebula in Taurus

Telescope: Meade N6 at f/5, Orion Atlas EQ-G
Camera: ZWO ASI1600MM-c v3
Filters: Orion Imaging Skyglow pre-filter, Meade LRGB filters
Sensor Temperature: -10C, Gain: 200, Offset: 30
Guide scope: Williams Optics 50mm, Meade DSI Pro II, PHD
Luminance: 33x60sec , 1x1, saved as FITS
RGB: 16x60sec , 1x1, saved as FITS
Darks: 32x60sec saved as FITS
Flats: 32x0.003sec, LRGB, Tee-shirt flats taken during dusk
Average Light Pollution: Red zone, poor transparency
Lensed Sky Quality Meter: 18.3 mag/arc-sec^2
Stacking: Mean with a 2-sigma clip.
White Balance: Nebulosity Automatic
Software: Nebulosity, Deep Sky Stacker, Photoshop

This was the second image taken on my first night out with the ZWO ASI1600MM-c. The sky conditions were pretty rough and variable with gusty winds and passing haze. I ended up tossing out half of the luminance source images. I’m happy with the results given the conditions, but I am sure that I can do better. Note that unlike my earlier image of M33, the color images for this set were not binned, and that worked out well.

M1 is a supernova remnant; the remains of a star that ended its life in one of the most violent events in nature. This particular supernova erupted in 1054 and the star became so bright that it was visible in broad daylight for 23 days. The resulting nebula is expanding so fast that it can be detected in images taken a few years apart. At the heart of the nebula is a pulsar; a neutron star spinning at over 30 revolutions per second.

-John

M1 (12-16-2017)-1j.jpg