Abell 39 – Planetary nebula


Abell 39 is a planetary nebula in the constellation Hercules. With its 2.5 light-years radius, it’s relatively large for a planetary nebula, and it’s about 6,800 light years away from us. This shell of gas ejected by the star that can be seen in the center continues to expand at a speed of 35 km per second.

This bubble is relatively faint and difficult to photograph and I’m glad I succeded. Its unreal appearance is another example that sometimes reality surpasses fiction.

Technical details:

Telescope: Celestron Edge HD14 and 0.7x focal reducer
Mount: Paramount MX+
Camera: ZWO ASI 1600
Filters: Astrodon LRGB
Exposure: 23 x 6 minutes in luminance and 47 x 6 minutes in RGB
Place: Backyard observatory in Sainte-Sophie, Qc
Date: June 2020