Image of the day 02/18/2021

Drechser 21 (PNG 107.1-14.8) is a new, and by a spectrum confirmed planetary nebula and was already discovered by me in May 2019. The PN has a size of about 8 arc min and is located in the constellation Andromeda.

More information about Dr 21:
http://planetarynebulae.net/FR/page_np.php?id=505

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Dr 21 was, as always, masterfully photographed by my friend, the Austrian astrophotographer Markus Blauensteiner at the Ursa Major Observatory (ROSA remote observatory southern alps).

Interesting fact: In the south of Dr 21, but still within the nebula, Markus Blauensteiner and I discovered another potential PN, which is far behind Dr 21. Visually, however, it gives the impression that both PNs are connected. The second PN was named "DrBl 1" (PNG 107.1-14.9).

More information about DrBl 1:
http://planetarynebulae.net/FR/page_np.php?id=816

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Telscope & Camera:
Lacerta N25010c Newtonian, f/D = 4
SX Trius 694, Baader LRGB filter

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Exposure time:
[OIII] 31x20 min / Ha 59x20 min / RGB 13x5 min per filter.
33 h 15 min

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Photo: Markus Blauensteiner
Image processing: Marcel Drechsler

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Dr 21 (PNG 107.1-14)
Coordinates: 23:23:49.89 +45:16:54.43