Sh2-312 4-Panel Wide Field Pano in Ha (Jim Lindelien)

Celestial hemisphere: Southern · Constellation: Pyxis (Pyx) · Contains: LBN 1073 · LBN 1074 · LBN 1075 · LBN 1076 · LBN 1077 · LBN 1078 · LBN 1079 · LBN 1080 · LBN 1081 · LBN 1082 · LBN 1083 · LBN 1085 · LBN 1087 · NGC 2717 · NGC 2772 · NGC 2784 · NGC 2821 · NGC 2888 · NGC 2891 · PK248+08.1 · PK249+06.1 · PK253+10.1 · Sh2-312 · The star γPyx · The star δPyx · The star ηPyx · The star θPyx · The star κPyx · The star λPyx · del Pyx · And 5 more.

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Sh2-312 4-Panel Wide Field Pano in Ha

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Sh2-312 4-Panel Wide Field Pano in Ha

Sh2-312, the Great Comet Nebula in Pyxis.

I'm not too sure just how much of this extended nebulosity constitutes Sh2-312, but this view sure looks fine to me.

A four panel mosaic, each 13x300 sec subs. Imaged at 2x2 binning then drizzle stacked for EZ suite processing including noise reduction, soft stretch and a touch of local histogram equalization, followed by 50% downsampling.

Afterward, one pass of EZ's Adam Block star reduction; with a final noise reduction tweak in Affinity Photo plus curves trim.

This session was challenging due to the dim nature of the nebulae, their low ~26 degree altitude at my observing latitude, and variations in sky transparency from one panel to the next. The whole thing was kind of a gamble to go after that night, and I am pleased with the result.

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Objects of the South - negative declination only
Narrowband imaging
Deep Sky Mosaics
Sharpless2 Objects
ASI 6200 MM Pro
CMOS Imagers
WO Star 71

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Status	Advanced success
Started	...
Astrometry.net job	5628458
PixInsight job	SU4ZSF8NDLIF3SYS7BVM76P6YQJ892Y0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h04m21s.10
RA (top/left)	09h36m23s.28
RA (top/right)	08h37m11s.61
RA (bottom/right)	08h31m22s.97
RA (bottom/left)	09h33m23s.15

Dec (center)	-26°23′42″.5
Dec (top/left)	-24°34′56″.1
Dec (top/right)	-22°11′06″.3
Dec (bottom/right)	-27°44′05″.6
Dec (bottom/left)	-30°14′02″.3

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Sh2-312 4-Panel Wide Field Pano in Ha

Sh2-312 4-Panel Wide Field Pano in Ha

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Sh2-312 4-Panel Wide Field Pano in Ha

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