It was another good night at the River Ridge Observatory. There were five of us there imaging. It was much warmer and calmer than the night before so not having all those layers on was pleasant. My target for the night was the Jellyfish Nebula in Gemini.
This is a supernova remnant, similar to the better known Veil Nebula and Crab Nebula. The nebula is almost a degree wide or almost twice the apparent size of the Moon. It of course, is in the lower right quadrant. In the upper left quadrant is molecular gas, glowing in the Hydrogen alpha part of the spectrum and not related to the supernova remnant.
If you notice, near the top on the left is a star with a hint of blue nebulosity. The filter I used wouldn’t be any good at picking up reflection nebula and the star chart program does not show anything there but that is what it looks like.
This was three hours of data from five minute subs, taken with my 11″ SCT at f/1.9 using my NBZ UHS dual narrowband filter.
