The Heart Nebula - IC 1805 (Evangelos Souglakos)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15785 · HD15851 · HD16183 · HD236966 · IC 1805 · LBN 647 · LBN 648 · LBN 654 · LBN 655 · LBN 656 · LBN 657 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · And 5 more.

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The Heart Nebula - IC 1805

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The Heart Nebula - IC 1805

The Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons.The very brightest part of this nebula (the knot at the right) is separately classified as NGC 896, because it was the first part of this nebula to be discovered.The nebula's intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun's mass. The cluster used to contain a microquasar that was expelled millions of years ago.

Telescope: FLT98 @ f/5, Camera: ATIK 383L+ @ -15C, Mount: HEQ5 Pro, Filters: Baader LRGB + Ha 7nm, Subexposures: 15mins, Total exposure: 9h, Location: Gythio, Greece

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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
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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
Deep sky
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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	4756640
PixInsight job	M8RCBDS9LX5ZSRV1TSRULNOXONW9V4KA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h33m30s.31
RA (top/left)	02h39m47s.91
RA (top/right)	02h39m56s.58
RA (bottom/right)	02h26m47s.63
RA (bottom/left)	02h27m28s.59

Dec (center)	+61°20′26″.4
Dec (top/left)	+60°19′29″.5
Dec (top/right)	+62°21′48″.2
Dec (bottom/right)	+62°20′18″.5
Dec (bottom/left)	+60°18′06″.1

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The Heart Nebula - IC 1805

The Heart Nebula - IC 1805

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The Heart Nebula - IC 1805

The Heart Nebula - IC 1805

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