NGC-5866 (Joel Shepherd)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: M 102 · NGC 5866 · Spindle galaxy

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NGC-5866

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NGC-5866

Subject: NGC-5866, a somewhat unusual galaxy in Draco, located 50 million light-years away and about 2/3's the size of the Milky Way. NGC 5866 appears to be a lenticular galaxy, except for that prominent dust ring, so it may in fact be a spiral. It also apparently has much less dark matter than expected.

Capture notes: This was my starter project with SGP Pro, and I was able to fully automate the second and third nights of captures, including focus and meridian flips. Looking forward to more integration time and more sleep going forward. :-) The last night was done under a half moon, which had a noticeable effect on the luminance, but integrating the data still resulted in an overall noise reduction.

Processing: Fairly straightforward RGB processing. The luminance had some large-scale blotchiness -- clouds? -- that proved difficult to work out, and it was tough to pull up the fainter areas of the galaxy without overdoing the stars. Did a small amount of stretching with a star mask, which mostly worked though the two small stars in front of the galaxy have thin rings. Overall, though, I liked the resulting color and detail.

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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	2081480
PixInsight job	GXB75J2YWJKWWPDCAB1B6VFNGOG8I7VG
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	15h06m29s.833
RA (top/left)	15h07m27s.987
RA (top/right)	15h05m29s.670
RA (bottom/right)	15h05m32s.200
RA (bottom/left)	15h07m30s.278

Dec (center)	+55°45′47″.14
Dec (top/left)	+55°52′22″.25
Dec (top/right)	+55°51′53″.31
Dec (bottom/right)	+55°39′10″.40
Dec (bottom/left)	+55°39′39″.13

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