Purgathofer-Weinberger 1, PuWe1 ( PN G 158.9 + 17.8 ) is a large, circular planetary nebula in the constellation of Lynx.
PuWe1 was discovered by Alois Purgathofer and Ronald Weinberger in 1980 on the Palomar Deep Sky Survey prints. The nebula is one of the largest planetary nebulae visible in our skies, with a diameter of 20 arc minutes. PuWe1 is also one of the nearest known planetaries with a distance of only about 1200 light years.

This image taken over several nights in March-April 2021.
R-channel - 30 x 150 sec. bin 1x1;
G-channel - 30 x 150 sec. bin 1x1;
B-channel - 30 x 150 sec. bin 1x1;
Ha- 88 x 600 sec. bin 2x2;
OIII- 40 x 600 sec. bin 2x2.
Total integration time about 25:05 hours.

My setup: Telescope 8" Celestron Schmidt-Cassegrain (SCT) CPC800 GPS (XLT) on the equatorial wedge, focal reducer Starizona Night Owl 0.4х, Feq=864mm, camera Starlight Xpress Trius SX694, SX mini filter wheel, filters Astrodon LRGB E-series gen.2, Astrodon Ha 5nm, Astrodon OIII 3nm.
Capture and processing software: MaxIm DL6, PHD2, PixInsight, StarTools, Photoshop CC, Zoner photo studio 14.
North at the top.

Copyright: Boris Vladimirovich