Sh2-184 in SHO (Robert H. Kutner)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1590 · NGC 281 · PGC 137216 · PGC 137218 · PGC 137230 · PGC 137241 · PGC 137282 · PGC 137297 · PGC 137305 · Sh2-184

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Sh2-184 in SHO

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Sh2-184 in SHO

Acquired multiple frames over the past few nights for all three lines, ~120 x 300s images @ -10c & 100g, 1x1 bin, 100% were usable for Ha, ~85% for Sii, & ~80% for Oiii.

Blink / Subframe Select, Calibrated (100 Dark, 60 Flat, 100 Bias), Star Aligned all images with PixInsight. Used the Normalized Scale Gradient for integration - this knocked many Sii sub-frames out.

For Ha, Sii, & Oiii channels: Dynamic Cropped, Decon, TGV, MMT (& duplicated the Ha here for the Lum), EZ Soft Stretch, and Channel Combined using pixel math*
The duplicated Ha -> Lum was Mask Stretched, EZStretched, DSE, HDR, LHT, and LRGB Combined with the Pixel Math's dynamic SHO image.

The image was EZStar Reduced. TGV, Curves modified w/ masks, Resampled, and Annotated.

Please Enjoy!

*R- Oiii*Sii + ~Oiii*(.1*Sii+.9*Ha)
G- Ha*(0.7*Ha+0.3*Oiii) + ~Ha*Oiii
B- Oiii*Oiii + ~Oiii*(.3*Sii+.7*Oiii)

Cloudy Nights

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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	6457290
PixInsight job	BTKKSOA4I96IC34017TQPN7WJ59YM1W9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h52m09s.427
RA (top/left)	00h50m45s.951
RA (top/right)	00h48m25s.175
RA (bottom/right)	00h53m30s.759
RA (bottom/left)	00h55m56s.147

Dec (center)	+56°44′07″.58
Dec (top/left)	+57°15′00″.27
Dec (top/right)	+56°32′37″.13
Dec (bottom/right)	+56°13′10″.25
Dec (bottom/left)	+56°55′12″.73

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Sh2-184 in SHO

Sh2-184 in SHO

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Sh2-184 in SHO

Sh2-184 in SHO

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