IC 443 (Jelly Fish Nebula) in HSO (Robert H. Kutner)

Celestial hemisphere: Northern · Constellation: Gemini (Gem) · Contains: 12 Gem · 7 eta Gem · Gem A · IC 443 · IC 444 · LBN 840 · LBN 844 · LDN 1564 · Sh2-248 · Tejat Prior · The star Propus (ηGem)

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IC 443 (Jelly Fish Nebula) in HSO

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IC 443 (Jelly Fish Nebula) in HSO

ASIAir pro to acquire ~25 x 300s images @ -10c & 111g for Ha, Sii, & Oiii, all were usable. For RGB, for stars, 10 x 10s images @ -10c & 111g.

Blink / Subframe Select, Calibrated (60 Dark, 60 D/Flat, 100 Bias), Star Aligned all images with PixInsight. Used the Normalized Scale Gradient for integration.

For Ha, Sii, & Oiii channels: Cropped, DBE, TGV, MLT (& duplicated the Ha here for the Lum), EZ Soft Stretch, StarNet for star removal, and channel combined with Ha to R, Sii to G, & Oiii to B. The duplicated Ha -> Lum was Mask Stretched, STF Stretched, HDR, LHT, TGV, MMT, EZStar Reduction, and LRGB Combined with the HSO image.

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

Final image was Curves modified w/ & w/o masks. DSE, TGV, MMT, Saved as 16 bit tiff to export to PS for further noise reduction. Imported back to PI and Resampled, Cropped, and Annotated.

Final
Original
E

Cloudy Nights

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	Distinct awarded users	Total awarded images
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Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	5698496
PixInsight job	UZBDTON1FFM1NGVUV4PEMZWGC2GBWWVX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h16m52s.98
RA (top/left)	06h19m03s.19
RA (top/right)	06h19m47s.97
RA (bottom/right)	06h14m40s.80
RA (bottom/left)	06h14m00s.21

Dec (center)	+22°30′24″.10
Dec (top/left)	+21°29′44″.1
Dec (top/right)	+23°24′59″.3
Dec (bottom/right)	+23°31′04″.4
Dec (bottom/left)	+21°35′41″.7

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IC 443 (Jelly Fish Nebula) in HSO

IC 443 (Jelly Fish Nebula) in HSO

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IC 443 (Jelly Fish Nebula) in HSO

IC 443 (Jelly Fish Nebula) in HSO

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Acquisition details

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