Image center RA: 23h21m10.13s DE:+61°15'28.7"
This nebula in the constillation Cassiopeia between 7 to 11 thousand light years away was recorded by William Herschel in 1787.
The bubble appearing is probably the result of solar wind from its central strar.
Most of M-52 / NGC-7654 is visible in the lower right of the picture.
This open cluster is reported to be 5000 light years away, and was recorded by Charles Messier in 1774.