NGC 6960 - The Witch's Broom
NGC 6960 – The Witch's Broom
This is the southern part of the so-called "Witch's Broom", that in turn is the eastern part of a very widespread supernova remnant - the Cirrus nebula.
Again, the long focus makes it impossible to capture the whole structure. The northern part features a second arc, similar to the one visible in this image. I will take that one on as soon as possible and hopefully will be able combine the two images.
This nebula is the result of a supernova explosion about 18,000 years ago (the figures differ quite a lot. Some sources state an age of merely 5,000 years) and approximatly 1,500 lightyears away. What you can see here is the shockwave of that incident that excites the gas from the former stars hull and interstellar material that was picked up on the way.
This imaging session was quite pleasant because the initial setup of the gear went like a charm and the correctional graph of the autoguider was as flat as a pancake. Things went so well, I really thought something is wrong.
|Exposure:||27 x 300s, ISO800|
|Camera:||Canon EOS 1100D (Canon Rebel T3), modified + CLS Clipfilter|
|Telescope:||10" GSO RC, 1340mm (Astro Physics CCDT67 Reducer)|
|Guiding:||OAG mit Lodestar und PHD|
|EIP:||Fitswork, Serif PhotoPlus X6 and Gimp|