Hi,
I would like to submit my M1 image, that I've taken around mid December 2020.
Rig details:
Mount: Avalon Instruments Linear Fast Reverse
OTA: Celestron EdgeHD 8” SCT, reduced to 1500mm at F7
Camera: ZWO ASI1600MM Pro + Astronomik 6nm narrowband filters
Autoguiding: ZWO ASI290MM + ZWO OAG
Integration: 100/112/110 S2/Ha/O3 frames with 5 minutes exposure time. ~27 hours total
https://cdn.astrobin.com/thumbs/jh1DL79 ... 9Sel4c.jpg
Full resolution
https://cdn.astrobin.com/thumbs/jh1DL79 ... czOqwr.jpg
The first entry in the Messier catalog is also known as the Crab Nebula. The supernova remnant is in the constellation of Taurus. It lies 6,500 light-years from Earth, and measures about 13 light-years across.
The analysis of early photographs of the nebula taken years apart revealed that it was expanding. Tracing the expansion back revealed that the nebula must have become visible on Earth about 900 years before.
Historical records revealed that a new star bright enough to be seen in the daytime had been recorded in the same part of the sky by Chinese astronomers on 4 July 1054. The supernova was visible to the naked eye for about two years. It is expanding at a rate of about 1,500 kilometers per second, or 0.5% of the speed of light. (Source: Wikipedia)
Humanity has come a long way. I can imagine the look on the faces of the people who traced back this supernova remnant to an explosion recorded in our relatively recent history. I wonder if Betelgeuse will give us a similar experience in our lifetime.
Clear Skies,
Michel Makhlouta