LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC (John Jennings)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD191334 · HD191496 · HD191568 · HD191613 · HD192225 · HD192285 · HD227843 · HD227844 · HD227854 · HD227898 · HD227907 · HD227922 · HD227955 · HD227962 · HD227979 · HD228011 · HD228025 · HD228026 · HD228035 · HD228036 · HD228045 · HD228046 · HD228047 · HD228087 · HD228088 · HD228123 · HD228131 · HD228132 · HD228168 · HD228179 · And 34 more.

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LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

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LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

This little piece of Cygnus Heaven is full of beautiful Hot and Cold stars with HII and a dose of Beverly Lynds Dark Nebulas. It really pops out when photographed at the non wide field resolutions. I think a lot of imaging opportunities are often overlooked.

Processed with and without PI/BlurXTerminator. Both were very close in quality. This is the PI/BlurXTermminator version.

HISTORY       1   Stacking method SIGMA CLIP AVERAGE
HISTORY       2   De-mosaic bayer pattern used RGGB
HISTORY       3   Colour conversion: Bilinear interpolation interpolation.
EXPTIME    = 7800 / Total luminance exposure time in seconds.
SET-TEMP   = 0 / Set temperature used for luminance.
LUM_EXP    = 300 / Average luminance exposure time.
LUM_CNT    = 26 / Luminance images combined.
LUM_DARK   = 30 / Darks used for luminance.
LUM_FLAT   = 40 / Flats used for luminance.
LUM_BIAS   = 80 / Flat-darks used for luminance.

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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	7577835
PixInsight job	3JV4F8H5Z02SPH78Q5AC3FEEB4GPG4BY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h10m59s.318
RA (top/left)	20h13m50s.377
RA (top/right)	20h08m07s.519
RA (bottom/right)	20h08m09s.791
RA (bottom/left)	20h13m49s.229

Dec (center)	+33°08′51″.70
Dec (top/left)	+33°32′40″.74
Dec (top/right)	+33°32′37″.28
Dec (bottom/right)	+32°44′47″.68
Dec (bottom/left)	+32°45′01″.58

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LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

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LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

LDN841 - "Hot & Cold Jewels in Cygnus Heaven" 2.16 Hrs OSC

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