NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC (John Jennings)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: IC 3355 · IC 3386 · IC 3388 · IC 3393 · M 86 · NGC 4387 · NGC 4388 · NGC 4402 · NGC 4406 · NGC 4425 · NGC 4435 · NGC 4438 · NGC 4458 · NGC 4461 · The Eyes

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NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

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NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

Doesn't include all 8 galaxies in Markian's Chain, but a good number from the Virgo Super Cluster.

SQM = 21.62 MPSAS @ 68 degrees altitude

HISTORY   1 Stacking method SIGMA CLIP AVERAGE
HISTORY   2 De-mosaic bayer pattern used RGGB
HISTORY   3 Colour conversion: AstroSimple interpolation.
EXPTIME    = 13200 / Total luminance exposure time in seconds.
SET-TEMP   = -5 / Set temperature used for luminance.
LUM_EXP    = 600 / Average luminance exposure time.
LUM_CNT    = 22 / Luminance images combined.
LUM_DARK   = 20 / Darks used for luminance.
LUM_FLAT   = 40 / Flats used for luminance.
LUM_BIAS   = 0 / Flat-darks used for luminance.

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	Distinct awarded users	Total awarded images
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
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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	6226447
PixInsight job	PIV0RY7YVXA4HGJDE6K01NAWOZ80DH6V
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h27m16s.37
RA (top/left)	12h25m20s.90
RA (top/right)	12h29m11s.38
RA (bottom/right)	12h29m12s.48
RA (bottom/left)	12h25m21s.30

Dec (center)	+12°57′25″.3
Dec (top/left)	+12°38′07″.9
Dec (top/right)	+12°37′46″.7
Dec (bottom/right)	+13°16′42″.2
Dec (bottom/left)	+13°16′58″.3

Image Index:

Contribution Index (beta):

NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

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Image Index:

Contribution Index (beta):

NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

NGC4438 Sc (8.5",10M) & NGC4435 "The Eyes" (Vir); M86 and 12 Galaxies in the Super Cluster - 3.66 hours OSC

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