IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO (Derek Spratt)

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

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO, Derek Spratt

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IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

Powered byPixInsight

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

Bortle 7 Urban Skies

I have several iterations of this target as follows:

4 panels of The Heart & Soul Nebulae in Ha: https://www.astrobin.com/7s0hbv/
4 panels The Heart & Soul Nebulae in Ha without stars: https://www.astrobin.com/g2fybr/D/
4 panels The Heart & Soul Nebulae in SHO: https://www.astrobin.com/9lh3wr/
4 panels The Heart & Soul Nebulae in SHO without stars: https://www.astrobin.com/qn775k/
1 panel of The Heart Nebula only in Ha: https://www.astrobin.com/hoy9mz/
1 panel of The Heart Nebula only in Ha without stars: https://www.astrobin.com/m7j7ki/
1 panel of The Heart Nebula only in SHO: https://www.astrobin.com/e3urip/
1 panel of The Heart Nebula only in SHO without stars: https://www.astrobin.com/11jbah/
1 Close-up of Melotte 15 in Ha: https://www.astrobin.com/yzg4jf/
1 Close-up of Melotte 15 in Ha without stars: https://www.astrobin.com/78nioq/
1 Close-up of Melotte 15 in SHO: https://www.astrobin.com/b18fiv/
1 Close-up of Melotte 15 in SHO without stars: https://www.astrobin.com/wzjx9a/

Pixinsight processing notes: I am now using ABE in place of DBE and building Mosaics using PhotometricMosaic after adjusting the background levels using DNALinearFit. I then do channel combining in the final linear stage before stretching on an individual channel basis - this is providing superior results so I am reprocessing many of my images and re-posting them.

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	Basic success
Started	...
Astrometry.net job	8604329
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

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Image Index:

Contribution Index (beta):

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

IC 1805 (Heart Nebula) - Melotte 15 Close-Up in SHO

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Description

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