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A planetary nebula in the constellation of Ursa Major.

Exceptionally faint and rarely imaged because it's so faint. Indeed the only previous image I could find was by Robert Pölzl.

A very obscure high excitation planetary nebula discovered in 1995 by James Liebert, Richard Tweedy, Ralf Napiwotzki and Michael Fulbright. At its heart is the eclipsing binary star system BE Ursae Majoris.

This is so faint that it's almost invisible on 1800s exposures, so I had to resort to capturing OIII data at bin 3x3, and lots!
There is a tiny amount of Ha, but even 1800s at bin 4x4 it was too faint to use.

26h40m total integration (40x1800s OIII at bin 3x3, LRGB all 20x300s at bin 1x1). Captured on my dual rig APM TMB 152 setup.

e-Eye, Spain 4/5-7/5/2019.

APM TMB 152 F8 LZOS, 10 Micron GM2000HPS, QSI6120wsg8

Many thanks to Sakib Rasool for suggesting this target to me.



Edited by Petergoodhew
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Well done Peter, don't think I'll be attempting that one :grin:


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This is a very cool picture, always interesting going for the ultra faint stuff!


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