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PK 138.1+04.1 (Sh2-200, HDW 2) in Cassiopeia

Astrophotography from Ursa Major Observatory @ ROSA

Object data HDW 2
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Planetary Nebula
6’ with an extended halo of 40’
--
Cassiopeia
~3600 light years
2016-12-06 + 07 + 10 + 17
Gahberg observatory, Upper Austria
Lacerta 10” f/4 Newtonian + Moravian G2-8300 Baader LRGB filters
ASA DDM 60pro
Ha+[NII] 42x10 min, [OIII] 42x10 min, Luminance 13x2 min, RGB 13x2 min each
15 h 44 min
Object data Trumpler 3
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Open Star Cluster
23’
7 mag (V)
Cassiopeia
~2250 light years
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The object was initially classified as a HII region. HDW 2 stands for Hartl-Dengl-Weinberger 2