Another very frequently photographed target, this is
7h12 over 3 sessions (2h40 of 6nmHA and 4h32 of CLSCCD filter on an OSC) - at a time of year when there is no astro-darkness here...
I think this is also sometimes called Caldwell 33 and there are at least 3 component parts that have been tagged - NGC 6992 and NGC 6995 (together sometimes called the Network Nebula?) and IC1340 (also called the Bat Nebula).
The star that went supernova to create this apparently exploded 5-8k years ago, when the current Holocene era had already begun. Settlements existed in various parts of the world (eg: in ancestral puebloan territories in SW USA, in Mesopotamia, China, South Asia among others). The Sahara is believed to still have been savannah like at that time, copper smelting had begun, and even traces of the first dentistry have been found to date back to this period!
This does raise the Q of whether this supernova was seen with the naked eye by our ancient ancestors. Unfortunately, proto-writing only started developing in this period too (in China, SE Europe & W Asia) so there are obviously no written records. But some scientists/commentators
indicate that the star that exploded was 20x the size of our sun, and the explosion would have been brighter than Venus and visible in the daytime!
The number of stars in this FOV is insane. I was tempted to do some star reduction, but (a) my laptop is too old for those scripts on Pixinsight
and also (b) I want to get much more data on the nebula before I take stars away. I think if I ever go deep on parts of this w a larger scope then I might experiment with that.
[PS - image revised as I found more data from the last session that I had foolishly filed in the wrong place! So its 7h12 of data now, and it does make a definite difference to my eyes]
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