P Cygni Nebula

P Cygni, the bright­est star in this image, is lumin­ous blue vari­able (LBV) super­gi­ant, which had a nova out­burst in 1600 and is the pro­to­type of a well known class of stars. In 2006, a large shell of fil­a­ment­ary OIII nebu­los­ity was dis­covered. This is the remains of an his­tor­ic erup­tion thou­sands of years ago, an event that would have been sim­il­ar to the Great Erup­tion of Eta Carinae in 1843 (which is also an LBV). Some parts of the OIII nebu­los­ity also have a Ha coun­ter­part so long Ha expos­ures as well as OIII have been taken. North is up in this image.

The paper describ­ing the dis­cov­ery of the nebu­los­ity can be found here.

The plan­et­ary neb­ula in the upper left corner is Abell 69, shin­ing at 18.7mag and an appar­ent dia­met­er of about 25 arcsec.

[descrip­tion from Sakib Rasool]

Details

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RCOS 14.5” f/​8
ASA DDM85
Apo­gee U16M
Astro­don Gen2
HaOIIIR­GB 920:800:220:220:220 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart P Cygni Nebula

LBN 380 Region Sky Chart - Astrophotography Martin Rusterholz

Image cre­ated by Skychart