Heart and Soul nebulae 2023 (matthew.maclean)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14552 · HD14558 · HD14695 · HD14794 · HD14817 · HD15022 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15640 · HD15665 · HD15785 · HD15851 · HD16038 · HD16088 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16506 · HD16507 · HD16626 · And 85 more.

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Heart and Soul nebulae 2023

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Heart and Soul nebulae 2023

This is a three-panel mosaic. I originally planned two-panels, but I discovered the combination did not quite fit with my rig. Fortunately, I got another clear night about a month later.

There were a couple processing challenges. Astro Pixel Processor didn't do the best job assembling the panels together (I also tried the PI GradientMergeMosaic process which was quite a bit worse). So, I had to try to clean up a couple of the interface edges as best I could. There also was a little bit of halo effect on some of the brighter stars from the filter I think. I reduced star size a little to help mitigate it. Not perfect, but overall I'm quite happy with it.

The raw integration is dominantly red of course, so I did just a subtle HOO re-balancing to give the overall image a little more interest.

Northeast Imagers
SharpCap Users
Antlia ALP-T 5nm Dual Narrowband Filter
William Optics GT Series
Duo-band, Tri-band, and Quad-band Imaging

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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	8889335
PixInsight job	WM8VVS2DW3AZOFUEUTMFC322XACNR50F
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h43m55s.76
RA (top/left)	03h00m39s.17
RA (top/right)	03h07m47s.44
RA (bottom/right)	02h24m56s.88
RA (bottom/left)	02h21m13s.91

Dec (center)	+61°04′33″.9
Dec (top/left)	+59°00′42″.1
Dec (top/right)	+61°45′53″.5
Dec (bottom/right)	+62°59′47″.2
Dec (bottom/left)	+60°08′10″.6

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Heart and Soul nebulae 2023

Heart and Soul nebulae 2023

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Heart and Soul nebulae 2023

Heart and Soul nebulae 2023

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