LDN 1235, Shark Nebula (Grigory2020)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 16 Cep · LBN 535 · LBN 541 · LBN 546 · LDN 1235 · The star 16 Cep · VdB149 · VdB150

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LDN 1235, Shark Nebula

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LDN 1235, Shark Nebula

Object- LDN 1235, Shark Nebulae
Acquisition details:
Mount: Sky Watcher EQ6-R Pro
Camera: QHY268MM, cooled to +20C and +10C, gain 56, offset 10
Scope: Sky Watcher Esprit 100ED, 550mm FL
Field Flattner: Sky Watcher supplied with the scope
Filter: Antlia narrowband and RGB filters
Rotator: Pegasus Falcon
Guiding: QHY- OAG, QHY5-III guide camera
Control: Primalucelab Eagle 4 for complete control of acquisition, power, dew heating, and cable management
Sequence control: NINA
Processing: Pixinsight
Light pollution conditions: Bortle 3, sky brightness: 21.0 mag/sq arcsec
Moon phase: about 35% and 0%
Exposure: Lum- 70X300 sec= 5 hours 50 min; R- 35X300sec= 2 hours 55 min; G- 26X300sec= 2 hours 10 min; B-21X300 sec= 1 hours 45 min; total exposure: 12 hours, 40 min.
Dates taken: 2 nights in Sep 2023
Location: Saudi Arabia, Eastern Province
Notes: Very hot weather and camera was cooled to +20C one night and +10C to avoid malfunction. I had to drive 205 km to the location and I got stuck in the sand and had to dig myself out. I had to fight and wind and high humidity.

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

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
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
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	8472416
PixInsight job	6H218C2D5F4N7590QUCIN4BXJG1XEJNT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h03m38s.93
RA (top/left)	22h20m25s.73
RA (top/right)	21h46m47s.34
RA (bottom/right)	21h48m17s.38
RA (bottom/left)	22h19m08s.36

Dec (center)	+73°18′27″.8
Dec (top/left)	+74°01′27″.4
Dec (top/right)	+74°00′41″.6
Dec (bottom/right)	+72°30′46″.9
Dec (bottom/left)	+72°31′30″.5

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LDN 1235, Shark Nebula

LDN 1235, Shark Nebula

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LDN 1235, Shark Nebula

LDN 1235, Shark Nebula

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