IC 1396 (LBN 457) in SHO (Robert H. Kutner)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: B161 · B366 · B367 · Erakis · IC 1396 · LBN 451 · LBN 452 · LBN 455 · LBN 456 · LBN 457 · LDN · LDN 1092 · LDN 1098 · LDN 1099 · LDN 1101 · LDN 1105 · LDN 1106 · LDN 1110 · LDN 1111 · LDN 1112 · LDN 1113 · LDN 1115 · LDN 1116 · LDN 1117 · LDN 1118 · LDN 1120 · LDN 1121 · LDN 1123 · LDN 1124 · LDN 1126 · And 11 more.

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IC 1396 (LBN 457) in SHO

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IC 1396 (LBN 457) in SHO

Used Stellarium 0.20.3 to scout and frame target. ASIAir pro to acquire ~60 x 300s images @ -10c & 120g for Ha, Sii, & Oiii, dithered every frame, ~96% were usable.

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

For Ha, Sii, & Oiii channels: Cropped, DBE, TGVDenoise, MMT (& duplicated the Ha here for the Lum), EZ Soft Stretch, StarNet for star removal, channel combined using LRGB Combination -> Sii to R, Ha to G, & Oiii to B, SCNR combined image, & a final DBE w/ normalize.

The duplicated Ha -> Lum was Mask Stretched, HDR, LHT, MMT, StarNet, & LRGB Combined with the RGB SHO image.

Raw Ha, Sii, & Oiii filter data for stars was 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 the stars.

Combined image was Curves modified w/ masks. Photoshop for noise reduction. Returned to PI for TGVDenoise & MMT on Chrom., Resampled, Cropped, and Annotated.

Original
Final
D

William Optics GT Series
QHY294M Pro/ASI294MM Pro
Cloudy Nights
Suburban Astrophotography

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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	5171211
PixInsight job	APRHJ944K1I0ZK0HOGES8V3SLZ0UG2WH
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h40m30s.50
RA (top/left)	21h34m24s.11
RA (top/right)	21h48m31s.31
RA (bottom/right)	21h47m11s.27
RA (bottom/left)	21h31m49s.18

Dec (center)	+58°20′29″.3
Dec (top/left)	+56°44′09″.0
Dec (top/right)	+56°53′35″.1
Dec (bottom/right)	+59°55′33″.7
Dec (bottom/left)	+59°45′15″.7

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IC 1396 (LBN 457) in SHO

IC 1396 (LBN 457) in SHO

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IC 1396 (LBN 457) in SHO

IC 1396 (LBN 457) in SHO

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