Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)
Simeis 57 / DWB-111 Propeller Nebula, Kharan
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Simeis 57 / DWB-111 Propeller Nebula

Simeis 57 / DWB-111 Propeller Nebula, Kharan
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Simeis 57 / DWB-111 Propeller Nebula

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Description

I was going to shoot SH2-114 (the Dragon Nebula) but it wouldn't show up at all in 5 minute test shots. So I went for my next target in list, the Propeller Nebula in Cygnus. I always find it difficult to process these Cygnus nebulae, as there's not a single pixel of background sky visible. Even when I register some HA image as my reference for background extraction, I have this nagging doubt about messing with the data. At least the propeller shows up fine.

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Simeis 57 / DWB-111 Propeller Nebula, Kharan