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.