HFG1 (Heckathorn, Fesen and Gull) Abell 6 (Jerry Macon)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: PK136+04.1 · PK136+05.1

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HFG1 (Heckathorn, Fesen and Gull) Abell 6

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HFG1 (Heckathorn, Fesen and Gull) Abell 6

Imaged nights of 10/5/2021, 10/6/2021, 10/8/2021, 10/10/2021, 10/11/2021

HFG1 was discovered in the Milky Way Emission Line Study in 1982 by Heckathorn, Fesen and Gull (A&A, 114, 414, 1982). It is defined as a type F planetary nebula by Tweedy and Kitter (Astrophys. J Supp Series 107, 255-262, 1996) meaning that is appears to be uniformly filled. Its mag. 14.5 central star is a close, precataclysmic binary, V664 Cas. One report suggests that V664 left a trail at least 20′ long of ~10,000 year old shocked material as it ejected matter and moved through the interstellar medium (ISM).

The detail was brought out with 3 nm OIII and 5nm Ha filters and RGB data were added for star colors, but this object is extremely faint and requires long exposure to bring out any detail.

This object is so faint you can barely see any of it on a single frame. No wonder it took so long for HFG to discover it.

My Collections:
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
PixInsight job	A1GG9ABSKDPCB4DUU0WIZG2SF44W6R7E
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	03h01m41s.70
RA (top/left)	02h56m20s.14
RA (top/right)	02h56m46s.30
RA (bottom/right)	03h06m47s.50
RA (bottom/left)	03h06m50s.75

Dec (center)	+64°45′26″.6
Dec (top/left)	+65°24′08″.0
Dec (top/right)	+64°05′04″.1
Dec (bottom/right)	+64°06′03″.5
Dec (bottom/left)	+65°25′10″.1

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HFG1 (Heckathorn, Fesen and Gull) Abell 6

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