Heart Nebula, Fish Head Nebula (mjgood)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14695 · HD14794 · HD14795 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15640 · HD15665 · HD15785 · HD15851 · HD16088 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD236966 · IC 1795 · IC 1805 · LBN 645 · LBN 646 · LBN 647 · And 22 more.

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Heart Nebula, Fish Head Nebula

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Heart Nebula, Fish Head Nebula

The Heart Nebula (IC 1805, Sh2-190) is an emission nebula and star forming region of almost 200 light-years across, located within the Perseus Arm of our Milky Way galaxy, about 7500 light-years away in the northern constellation Cassiopeia. It is nicknamed the Heart Nebula because it looks like a human heart.The very brightest part of this nebula (the knot at the bottom right) is separately classified as NGC 896 (Fish Head Nebula). The Heart Nebula is the western neighbor of the Soul Nebula (NGC 1848) and together they form the Heart and Soul Nebulae. They both are part of a complex of star forming regions that lie at the edge of a large molecular cloud.The Heart Nebula is formed by plasma of ionized hydrogen and free electrons. The image, coloured in the Hubble palette, is showing a mix of glowing interstellar gas and dark dust clouds. The nebula appears relatively devoid of stars because of the obscuring dust. However, fierce winds radiated from massive stars, in an open star cluster near the center, shaped the nebula.

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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	8657131
PixInsight job	9ZKCROVZL67C5AFIVI27ZBVC7WS8AHOP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m46s.18
RA (top/left)	02h40m26s.20
RA (top/right)	02h41m13s.97
RA (bottom/right)	02h24m22s.90
RA (bottom/left)	02h25m02s.67

Dec (center)	+61°23′36″.6
Dec (top/left)	+59°56′15″.7
Dec (top/right)	+62°48′53″.1
Dec (bottom/right)	+62°49′11″.6
Dec (bottom/left)	+59°56′28″.5

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Heart Nebula, Fish Head Nebula

Heart Nebula, Fish Head Nebula

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Heart Nebula, Fish Head Nebula

Heart Nebula, Fish Head Nebula

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