HFG1 Ancient Planetary Nebula (Jerry Macon)

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

Image of the day 03/19/2019

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HFG1 Ancient Planetary Nebula

Image of the day 03/19/2019

Powered byPixInsight

HFG1 Ancient Planetary Nebula

Images from the following two scopes (piggybacked) contributed to this image:

AG12+ASI1600MM at .70 asec/pix

TV127is+ASI183MM at .75 asec/pix.

They were all registered to the best Ha image taken on the AG12.

Imaged on nights of 2018/11/20, 21, 23, 24, 25, 26.

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 5 nm OIII and 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.

Planetary Nebulae

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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	2575090
PixInsight job	34AWMWQOMZ0XV1PP5UFACTK2MGZZZV50
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	03h03m41s.215
RA (top/left)	03h07m55s.608
RA (top/right)	02h59m38s.364
RA (bottom/right)	02h59m32s.591
RA (bottom/left)	03h07m37s.993

Dec (center)	+64°54′33″.37
Dec (top/left)	+65°13′16″.87
Dec (top/right)	+65°14′55″.48
Dec (bottom/right)	+64°35′22″.68
Dec (bottom/left)	+64°33′46″.91

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Image of the day 03/19/2019

HFG1 Ancient Planetary Nebula

Image of the day 03/19/2019

HFG1 Ancient Planetary Nebula

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Image of the day 03/19/2019

HFG1 Ancient Planetary Nebula

Image of the day 03/19/2019

HFG1 Ancient Planetary Nebula

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