Minkowski 1-79 (M1-79) - An angular planetary nebula (lowenthalm)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: PK093-02.1

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Minkowski 1-79 (M1-79) - An angular planetary nebula

Acquisition type: Lucky imaging

Powered byPixInsight

Minkowski 1-79 (M1-79) - An angular planetary nebula

Acquisition type: Lucky imaging

The seeing was good enough on the two nights I captured data for this target to show the lacy red structure inside the distorted hexagonal outer boundary of his bright planetary nebula. A narrow band H-alpha filter might show this structure a little more clearly. Maybe next year!

Because the human eye has trouble seeing fine detail in red, in this case the red on white detail of the lacy structure, I sampled the entire image of to double the resolution. Seeing was good enough that it holds up surprisingly well.

When researching this object in SIMBAD, I found a distance estimate for this object from 2008 that put it at 2,652 parsecs away. The inner bright region shown in this image is 28 x 43 arc seconds which would translate at this distance to 1.2 x 1.8 light years in size.

More recent data from the Gaia mission has a measurement of what looks to be the 18.9 magnitude (Gaia G filter) progenitor star at the center. This object is intensely blue and hot, as the Gaia B filter magnitude of 17.5 is over a magnitude brighter than the G magnitude. This is the hallmark of a young, recently exposed white dwarf, so it's most likely the progenitor star. Gaia parallax data on the white dwarf puts it at between 1,072 to 2,630 parsecs, with a center value of 1,523 parsecs. Using a distance of 1,523 parsecs, the size of the bright region of the nebula in this image works out to 0.7 x 1.0 light years in size. In my estimation, the Gaia implied distance for the nebula seems a much better fit given the brightness of nebula.

This is a combination of IRCut filter data (4 x 6 minute live-stacked 240x1.5sec subs) and IDAS filter data (2 x 6 minute live-stacked 360x1.5sec subs).

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Status	Advanced success
Started	...
Astrometry.net job	3977408
PixInsight job	VPIF754W1PXW5FNDYJZC1GXIWY5A8XWF
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h37m00s.995
RA (top/left)	21h36m30s.213
RA (top/right)	21h36m49s.569
RA (bottom/right)	21h37m31s.737
RA (bottom/left)	21h37m12s.490

Dec (center)	+48°56′07″.30
Dec (top/left)	+48°59′51″.47
Dec (top/right)	+48°50′07″.89
Dec (bottom/right)	+48°52′23″.11
Dec (bottom/left)	+49°02′07″.80

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Minkowski 1-79 (M1-79) - An angular planetary nebula

Minkowski 1-79 (M1-79) - An angular planetary nebula

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Minkowski 1-79 (M1-79) - An angular planetary nebula

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