Seagull Nebula (IC2177) in H-alpha (JDJ)

Celestial hemisphere: Southern · Constellation: Monoceros (Mon) · Contains: IC 2177 · NGC 2327 · NGC 2335 · NGC 2343

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Seagull Nebula (IC2177) in H-alpha

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Seagull Nebula (IC2177) in H-alpha

The Seagull Nebula (IC2177) is an emission nebula located between the constellations Monoceros and Canis Major. This target lies about as close to the horizon as I can image from my usual backyard location and is only visible for a hour or so each night. I managed some brief end of winter/early spring captures in H-alpha and OSC.

Imaged on March 22 , 2019 with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Optolong 12nm H-alpha Filter, and full spectrum modified Nikon D5300.

Calibrated using batch pre-processing (BPP) script using darks, bias, and flats. Extracted red channel. Registered and stacked using StarAlighment and Integration. Total integration time of ~2 hours using 21 subs at ISO400 x 360 sec. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT noise reduction, stretched using Histogram Transformation Tool, Curves Transformation, TGVDenoise, HDR Multiscale Transform, Local Histogram Equalization, and Morphological Transformation.

DSLR narrowband
Suburban Astrophotography
The OSC Club (One Shot Camera)
The refractors!
Cloudy Nights

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Status	Advanced success
Started	...
Astrometry.net job	5465781
PixInsight job	89GXY8SRN7Y3W2GSRA3J75O798X7I95F
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h05m15s.77
RA (top/left)	07h01m06s.71
RA (top/right)	07h00m55s.41
RA (bottom/right)	07h09m27s.20
RA (bottom/left)	07h09m33s.43

Dec (center)	-10°45′50″.9
Dec (top/left)	-09°08′52″.2
Dec (top/right)	-12°21′02″.5
Dec (bottom/right)	-12°22′22″.1
Dec (bottom/left)	-09°10′19″.4

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Seagull Nebula (IC2177) in H-alpha

Seagull Nebula (IC2177) in H-alpha

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Seagull Nebula (IC2177) in H-alpha

Seagull Nebula (IC2177) in H-alpha

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