Rosette Nebula in SHO (Robert H. Kutner)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: 12 Mon · LBN 941 · LBN 943 · LBN 948 · LBN 949 · NGC 2237 · NGC 2238 · NGC 2239 · NGC 2244 · NGC 2246 · NGC 2252 · Rosette A · Rosette B · Rosette Nebula · Sh2-275 · The star 12 Mon

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Rosette Nebula in SHO

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Rosette Nebula in SHO

I captured this Rosette Nebula data one night with my Williams Optics APO back in Nov '21 before I moved the 294MM camera and captured similar data using the RASA, but with MFR Astronomik filters. If interested, the RASA data is my most recent Rosette Nebula posting. Not much for nights here in New England this time of year so I am digging through some data sets I saved for later.

ASIAir pro to acquire 30 x 300s images @ -10c & 120g for Ha, Sii, & Oiii, ~65% were usable. For RGB, for stars, 10 x 10s images @ -10c & 120g. Dithered.

Blink / Subframe Select, Calibrated (60 Dark, 60 D/Flat, 100 Bias), Star Aligned all images with PixInsight. Used Image Integration with Drizzle.

For Ha, Sii, & Oiii channels: Cropped and channel combined with Ha to G, Sii to R, & Oiii to B. Extracted Lum, Decon, Mask Stretched, STF Stretched, HDR, LHT, Morph Transform, and LRGB Combined with the SHO image which was SoftStretched and Morph Transformed prior to addition.

RGB filter data combined with Channel Combination, Image was masked with an inverted Star Mask and replaced with SHO image using Pixel Math to add the nebulosity around select RGB stars.

Final image was Curves modified w/ & w/o masks. TGV, MMT, Resampled, Cropped, and Annotated.

Cloudy Nights

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Status	Advanced success
Started	...
Astrometry.net job	5831636
PixInsight job	C6YV0RLU1B420KHSPFHT8CWFQJNN619T
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h32m14s.98
RA (top/left)	06h28m36s.16
RA (top/right)	06h30m16s.70
RA (bottom/right)	06h35m52s.96
RA (bottom/left)	06h34m13s.43

Dec (center)	+05°03′04″.5
Dec (top/left)	+06°09′52″.5
Dec (top/right)	+03°41′59″.2
Dec (bottom/right)	+03°56′08″.9
Dec (bottom/left)	+06°23′57″.7

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Rosette Nebula in SHO

Rosette Nebula in SHO

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