This image shows SH2-200 planetary nebula and Trumpler 3 open cluster and is a result of season long shooting using my RC8 telescope with 55 hours of total exposure.
Normally people don't care about the cluster and often cut across it.
I wanted to give some justice to this nice little cluster, so centered the shot between the nebula and the cluster.
SH2-200 is a very old planetary nebula in the constellation of Cassiopeia and is commonly known as the Bear Claw Nebula due to the rippled structures on the surface of the enormous gas bubble formed as dying star shed its atmosphere at the end of its life. The energy of this faint planetary nebula is able to ionize unrelated interstellar gas in the vicinity.
Trumpler 3 is a young ~70 million years old open cluster, ~2100 light years away, with brightness of 7mag and has ~570 members.
This cluster is not marked on many maps and PI annotation tool ignores it. I had to use SIMBAD to find the name of this object.
There is not much research was done on this object, except this study from 2018 :
https://arxiv.org/pdf/1002.3789.pdf
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