The Draco Trio: NGC 5981, NGC 5982 and NGC5985 (Sergey Trudolyubov)

Celestial hemisphere: Northern · Constellation: Draco (Dra) · Contains: NGC 5981 · NGC 5982 · NGC 5985

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The Draco Trio: NGC 5981, NGC 5982 and NGC5985

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The Draco Trio: NGC 5981, NGC 5982 and NGC5985

A photogenic Draco Trio (NGC 5981, NGC 5982 and NGC 5985) imaged over several nights in April-May 2020 with the 250 mm f4.0 Lacerta PhotoNewton and ZWO ASI183MM Pro camera. The elliptical galaxy NGC 5982 (center) is exhibiting a well-defined shell structure presumed to be a result of multiple mergers with smaller galaxies. The spiral galaxy NGC 5985 (left) is located at the distance close to that of NGC 5982 (135~137 Mly). The recessional velocity of the third member of the "trio", the edge-on spiral NGC 5981 (right) puts it at a much closer distance of ~86 Mly.

The luminance exposures were taken at camera gain 0 and RGB at gain 53:

L: 76x300s (Gain 0, bin 1x1)

R: 44x300s (Gain 53, bin 1x1)

G: 23x300s (Gain 53, bin 1x1)

B: 26x300s (Gain 53, bin 1x1)

Total exposure: 14.1 hours

Original
B
E
Final
F
G

B

Description: Rotated close-up view

Uploaded: ...

E

Description: New processing with RC tools.

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F

Description: New processing with RC tools, rotated close-up view of the Draco Trio.

Uploaded: ...

G

Description: New processing with RC tools, a wide view.

Uploaded: ...

ZWO ASI183/QHY183
Fast Newtonians

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Status	Advanced success
Started	...
Astrometry.net job	9588196
PixInsight job	9CTR2WCDGY4C79AOXW14M2Q0MVJBH98D
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	15h38m49s.396
RA (top/left)	15h40m26s.300
RA (top/right)	15h38m47s.963
RA (bottom/right)	15h37m12s.484
RA (bottom/left)	15h38m50s.802

Dec (center)	+59°22′10″.85
Dec (top/left)	+59°19′25″.42
Dec (top/right)	+59°34′48″.14
Dec (bottom/right)	+59°24′51″.58
Dec (bottom/left)	+59°09′33″.51

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The Draco Trio: NGC 5981, NGC 5982 and NGC5985

The Draco Trio: NGC 5981, NGC 5982 and NGC5985

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The Draco Trio: NGC 5981, NGC 5982 and NGC5985

The Draco Trio: NGC 5981, NGC 5982 and NGC5985

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