NGC 6751 (lowenthalm)

Celestial hemisphere: Southern · Constellation: Aquila (Aql) · Contains: NGC 6751 · PK029-05.1 · TYC5140-3017-1 · TYC5140-3343-1 · TYC5140-3851-1 · TYC5140-3903-1

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NGC 6751

Acquisition type: Lucky imaging

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NGC 6751

Acquisition type: Lucky imaging

NGC6751 is a small planetary nebula, with the bright core that is 24 x 27 arc seconds across. The nebula has a total magnitude of 15.48 mag(V), giving it a fairly high surface brightness. Good data from data release 3 of the Gaia mission lists a parallax of 0.2908±0.0447 for the bright prominent central progenitor star, which works out to a distance of about 11,210 light years. At this distance, the nebula should be 1.5 light years across, which is about right for a bright young planetary nebula like this one. Its nice when all the data fits together well!

Beyond the bright core nebula, there are a pair of faint H-alpha bipolar jets to the left and right of the nebula. There is also a faint cloud of nebula emission to the northwest, which is barely visible here. It probably would have shown up better if the Moon hadn't been fairly bright at the time I captured the Duoband data. I am not sure if this actually related to the nebula. It would have to have been some sort of earlier pre-planetary nebula mass ejection.

The star colors come from the IRCut data I collected, while the nebula is a combination of both the IRCut+Duoband data. I was experimenting with different exposures to see what would beat seeing the best when imaging at the full 2900 focal length when not using a focal reducer. As a result, I made myself some extra work to properly combine the various data sets into a single image. Each sub was a live-stack captured with Sharpcap using either 2 or 4 second exposures.

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Status	Advanced success
Started	...
Astrometry.net job	6809253
PixInsight job	EJXVTW1MHK9IUL9LLCS4UJCFR5CR9XNC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h05m55s.377
RA (top/left)	19h06m14s.185
RA (top/right)	19h05m36s.713
RA (bottom/right)	19h05m36s.534
RA (bottom/left)	19h06m14s.740

Dec (center)	-05°59′38″.76
Dec (top/left)	-05°56′35″.40
Dec (top/right)	-05°56′31″.51
Dec (bottom/right)	-06°02′42″.11
Dec (bottom/left)	-06°02′46″.75

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