Located in the constellation of Orion the Horsehead is part of a dense cloud of gas in front of an active star-forming nebula known as IC434. The nebulosity is illuminated by Sigma Orionis (HD37699) located directly abouve IC434. The Horsehead is located at a distance of~ 1,600 light-years.
The data is 2 years old. I got so frustrated processing the image in 2023 that I gave up. Altinak flares traversed the whole image. This is the final image from my trusty Moravian G2-8300 that just decided to die a few months ago.
17.5 hrs of data (10 hrs Ha) from Jan/Feb 2023 with a TEC180fl, FRC, G2-8300, Astronomik filters.
Special thanks to Niall MacNeill and Rodney Watters for help in finalizing the image.
Full size here:
https://www.astrobin.com/full/ytnacb/C/