Sh2-173 The Phantom Nebula
For those that prefer mono
Taken on the night of 19 September 2015, this spooky image was with my Megrez 90 telescope with a 0.8 x focal reducer and 3nm Ha filter and Atik 460EX mono camera. It consists of 24 x 600s subs (= 4 hours).
This object is found in Casseopeia.