Al Ernst was working during January and March's occasional cool, clear nights using his Celestron 14 inch at f8 to get this great shot of M1... the famous Crab Nebula. The Crab Nebula's supernova was first seen and recorded in China in 1054 CE. Since that time, it has grown, spreading out through space to an average diameter of about 11 light-years across. That would make it more than twice the distance from the Sun to our nearest Star system, Alph Centauri!
He captured its details by accumulating a total of 7Ha and 7Oiii filtered subs, with each sub being 5 minutes long. He used a QSI-583 camera, which was cooled to -30°C below ambient, and processed the image using Nebulosity and Photoshop.
Nice work, as usual, AL. Thanks for sharing.