Abell 39 Planetary Nebula (Jeff Weiss)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: PK047+42.1

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Abell 39 Planetary Nebula

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Abell 39 Planetary Nebula

Abell 39 is a low surface brightness planetary nebula in Hercules. It is the 39th entry in George Abell's 1966 Abell Catalog of Planetary Nebulae. It is almost perfectly spherical and is one of the largest known spheres with a diameter of 5 light-years. Although nearly a uniform spherical shell the eastern limb of the nebula is 50% more luminous than the western limb (North is up in the image) and the central star is a bit off center to the East. [excerpts from Wikipedia]

I think that its interesting that the PN is most intense in the outer shell, less intense interior to that, but apparently transparent in the central portion ... all consistent with looking through a single spherical shell in the PN.

With synthesized Lum (using R, G, B), effective integration time is closer to 5.1 hours.

Taken at D.A.R.C. Observatory, Mercey Hot Springs, CA

6/17/20, 6/22/20

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Status	Advanced success
Started	...
Astrometry.net job	4935585
PixInsight job	6AAQWMW5N4JG52UAYOKWUVGSOPSXT6JI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h27m33s.782
RA (top/left)	16h28m24s.356
RA (top/right)	16h27m35s.843
RA (bottom/right)	16h26m43s.191
RA (bottom/left)	16h27m31s.729

Dec (center)	+27°54′35″.98
Dec (top/left)	+27°51′49″.12
Dec (top/right)	+28°06′06″.27
Dec (bottom/right)	+27°57′22″.41
Dec (bottom/left)	+27°43′05″.84

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Abell 39 Planetary Nebula

Abell 39 Planetary Nebula

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