This is my first H alpha mosaic, using the Borg 55. It was acquired over the winter of 2018-2019, and one of the goals was to image the Barnard loop (Sh 2-276), a supernova remnant. The mosaic is centered on the horse head dark nebula (Barnard 33).
https://erellaz.com/wp-content/uploads/2020/05/Barnard33.jpg