IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO (Jerry Macon)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · NGC 896 · Sh2-190

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IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

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IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

Two long nights with a full moon. These Antlia NB filters are working really well.

What energizes the Heart Nebula? First, the large emission nebula dubbed IC 1805 looks, in whole, like a human heart. The nebula glows brightly in red light emitted by its most prominent element: hydrogen. The red glow and the larger shape are all powered by a small group of stars near the nebula's center. In the center of the Heart Nebula are young stars from the open star cluster Melotte 15 that are eroding away several picturesque dust pillars with their energetic light and winds. The open cluster of stars contains a few bright stars nearly 50 times the mass of our Sun, many dim stars only a fraction of the mass of our Sun, and an absent microquasar that was expelled millions of years ago. The Heart Nebula is located about 7,500 light years away toward the constellation of Cassiopeia.

In the top left corner is IC 1795, the Fishhead Nebula.

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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	Advanced success
Started	...
Astrometry.net job	5034917
PixInsight job	645J5FZ40V2GAET3FADM2M37T6WW3M8F
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h32m35s.11
RA (top/left)	02h23m37s.46
RA (top/right)	02h24m39s.78
RA (bottom/right)	02h40m50s.00
RA (bottom/left)	02h41m12s.62

Dec (center)	+61°24′38″.6
Dec (top/left)	+62°40′42″.9
Dec (top/right)	+60°04′50″.4
Dec (bottom/right)	+60°06′37″.7
Dec (bottom/left)	+62°42′38″.0

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IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

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IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

IC 1805 Heart Nebula - IC 1795 Fishhead Nebula SHO

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