Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  PK097+03.1  ·  Sh2-128
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Abell 77 (AKA Sh2 128), Jerry Yesavage
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Abell 77 (AKA Sh2 128)

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Description

Also imaged 4 years ago with my Tak 180 ED. (Wide angle... tiny dot).

https://www.astrobin.com/275998/

This one million year old HII region is ionised by an O7 star.

According to a 1978 study, Sh 2-120, Sh 2-121, Sh 2-127 and Sh 2-128 are all at about the same distance of 7500 parsecs and are "probably distant HII regions associated with a spiral feature more distant than the Perseus arm".

This is primarily red in RGB but has a good O-III signal also near the core. Might be interesting in a longer FL scope.

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