Abell 39 (PN A66 39, PK 047+42 1, PN G047.0+42.4)

Abell 39 (PN A66 39, PK 047+42 1, PN G047.0+42.4) is a planetary nebula among dust clouds in the constellation of Hercules. Abell 39 was discovered by George Abell in 1966. The nebula has a diameter of about five light-years, and the thickness of the spherical shell is about a third of a light-year. The nebula itself is roughly 7,000 light-years from Earth. This image taken over several nights in July, August 2021. L-channel - 137 x 150 sec. bin 1x1; R-channel - 28 x 150 sec. bin 1x1; G-channel - 28 x 150 sec. bin 1x1; B-channel - 28 x 150 sec. bin 1x1; Ha- 51 x 600 sec. bin 1x1; OIII- 27 x 600 sec. bin 1x1. Total integration time about 22:12 hours.