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Astrophotography from Ursa Major Observatory @ ROSA

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“Alkor” Lacerta N25010c Newtonian, f/D = 4 SX Trius 694, Baader LRGB filter
10micron GM2000 HPS II
[OIII] 31x20 min / Ha 59x20 min / RGB 13x5 min per filter
33 h 15 min
data acquired remotely using CCD Commander image acquisition and pre-processing by Markus Blauensteiner image editing by Marcel Drechsler
Dr 21 (PN-G: 107.1-14) in Andromeda
Planetary Nebula (candidate)
~ 8’
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And
several nights in autumn 2019
The object was discovered in May 2019 by Marcel Drechsler. Almost in the middle there is a white dwarf. It is probably a planetary nebula. At the lower right edge of the PN there is a newly discovered nebula - DrBl 1.
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