The Heart Nebula (IC 1805) (Ani Shastry)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14510 · HD14552 · HD14558 · HD14695 · HD14794 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15665 · HD15785 · HD15851 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16506 · HD16626 · HD236966 · IC 1795 · IC 1805 · IC 1824 · And 29 more.

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The Heart Nebula (IC 1805)

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The Heart Nebula (IC 1805)

A glowing celestial cloud predominantly composed of ionized hydrogen gas, with its heart-like shape being driven by stellar winds from the super hot stars in its core, the Heart Nebula (IC 1805) is an emission nebula 7,500 light years away from Earth in the Perseus Arm of our galaxy, in the constellation of Cassiopeia. The nebula covers an area almost 4 times the size of the full moon in the sky!

At the center of the nebula is an open star cluster called Melotte 15, which contains a few bright stars that are nearly 50 times as massive as our Sun. The nebula also has ionized oxygen and sulfur gasses that contribute to the bluish and orangish tones. And at the bottom of the heart lies the Fishhead Nebula (IC 1795).

Captured here using a Celestron EdgeHD 11”, a Starizona Hyperstar v4, and a QHY600M camera with a 12.5 hour integration spread over two nights at the super-fast focal ratio of f/1.9, which is equivalent to a massive ~169 hours of data at the typical f/7 focal ratio of many of my other images!

Please note: The following tables are updated every 24 hours.

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	8483126
PixInsight job	4P0H58VCIAO5QGRBWMS9Q3DRYKI05RQP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m37s.55
RA (top/left)	02h43m43s.68
RA (top/right)	02h22m07s.76
RA (bottom/right)	02h22m21s.49
RA (bottom/left)	02h42m15s.93

Dec (center)	+61°24′17″.1
Dec (top/left)	+62°37′31″.9
Dec (top/right)	+62°42′01″.2
Dec (bottom/right)	+60°07′44″.7
Dec (bottom/left)	+60°03′37″.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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