IC 1805 (John Carroll)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14510 · HD14552 · HD14558 · HD14695 · HD14794 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15665 · HD15785 · HD15851 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16506 · HD16626 · HD236986 · IC 1795 · IC 1805 · IC 1824 · And 29 more.

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IC 1805

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IC 1805

IC 1805, The Heart Nebula, from back garden in Little Rock, Arkansas, November 27th, 2023. Respecting the "new image" policy of Astrobin... the data used for this image have never been posted on Astrobin before. I do have a previous image of IC 1805, but those are completely different data acquired with a different filter many weeks earlier.

On this particular night (Nov 28), the moon was almost full and by the end of the evening it was shining almost directly into the telescope. The last ~ 25% of the images had to be discarded due to extreme moonlight. Out of 92 300s images, 2 were eliminated due to aircraft and 18 were eliminated due to moonlight.

The filter used was the Optolong L-Quad Enhance Filter (L-QEF) quad bandpass light pollution suppression filter. It seems to function as a wide-band filter that specifically blocks Na and Hg streetlamp wavelengths.

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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	8841403
PixInsight job	NN4356F15ZZ4XVSSGJCUUYF74DBXSYSY
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m47s.90
RA (top/left)	02h42m55s.31
RA (top/right)	02h43m45s.96
RA (bottom/right)	02h21m48s.39
RA (bottom/left)	02h22m40s.66

Dec (center)	+61°28′22″.4
Dec (top/left)	+60°10′28″.2
Dec (top/right)	+62°43′20″.6
Dec (bottom/right)	+62°43′13″.6
Dec (bottom/left)	+60°10′21″.3

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IC 1805

IC 1805

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IC 1805

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