NGC7769, NGC7770 and 7771 (lowenthalm)

Celestial hemisphere: Northern · Constellation: Pegasus (Peg) · Contains: NGC 7769 · NGC 7770 · NGC 7771

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NGC7769, NGC7770 and 7771

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

NGC7769, NGC7770 and 7771

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Another rainy day of processing some images that were still "in the can" waiting for processing. This is a combination of:

3 x 600 second live stacks of 400 1.5 second subs each, using an IRCut filter.

6 x 480 second live-stacks of 320 1.5 second subs each, using an IDAS LPR filter.

Nice group of galaxies at about 200 million light years way. The entire area is surrounded by faint halos and tidal streams caused by interactions between these three galaxies.

I have included a labeled finder chart for a few interesting objects lurking in this image. Look at the "original" image for an annotated version that labels the objects of interest."

1) A bright 17th magnitude type II supernova (the type that result in neutron stars or black holes) in NGC 7769 that erupted sometime in late June 2019 and was still going strong in late august when I captured this set of images. Its the bright blue-white star on the lower edge of the bright inner disk of the galaxy.

2) A couple of distant quasars, one quite bright at 18.8 magnitude for its distance of nearly 12.5 billion light years. The other is right at the limiting magnitude of this image at just over 21st magnitude.

Original
Final
B

B

Description: The unannotated version of the same image.

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Astrophotography with Dobson

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Galaxies - small and unusual

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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	...
Astrometry.net job	2925299
PixInsight job	69NKBH7SWV3MKRVKKKXBPV2NNCX18O1K
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h51m15s.325
RA (top/left)	23h52m00s.931
RA (top/right)	23h50m25s.361
RA (bottom/right)	23h50m29s.764
RA (bottom/left)	23h52m05s.220

Dec (center)	+20°08′01″.40
Dec (top/left)	+20°16′04″.92
Dec (top/right)	+20°14′31″.80
Dec (bottom/right)	+19°59′56″.78
Dec (bottom/left)	+20°01′30″.80

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NGC7769, NGC7770 and 7771

NGC7769, NGC7770 and 7771

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Image Index:

Contribution Index (beta):

NGC7769, NGC7770 and 7771

NGC7769, NGC7770 and 7771

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Sky plot

Histogram

In these public groups

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