Heart of the Heart (Michael J. Mangieri)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805

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Heart of the Heart

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Heart of the Heart

The Heart Nebula, also known as IC 1805 or Sharpless 2-190, is an emission nebula located in the Perseus Arm of the Milky Way galaxy. It is situated in the constellation Cassiopeia, approximately 7,500 light years away from Earth, and is part of a complex of nebulae that includes the Soul Nebula (IC 1848). The Heart Nebula gets its name due to its resemblance to a human heart shape. The nebula is approximately 150 arcminutes in size, which is equivalent to 3 times the diameter of the full moon.

This image is not the complete nebula, but rather deep within the nebula centered on the open cluster, Melotte 15 -- hence the 'Heart of the Heart'. This image was taken in the SHO, or Hubble palette, where the hydrogen gas appears red and the ionized oxygen and sulfur gases, are responsible for the rich blue and orange. RGB stars were added in after the starless NB image was processed.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	Basic success
Started	...
Astrometry.net job	8885517
PixInsight job	n/a
PixInsight queue size	n/a
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Heart of the Heart

Heart of the Heart

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Heart of the Heart

Heart of the Heart

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