Heart Nebula (IC 1805) (mhtandy)

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 · HD16088 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16506 · HD16626 · HD236966 · IC 1795 · IC 1805 · And 28 more.

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Heart Nebula (IC 1805)

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Heart Nebula (IC 1805)

It's amazing how many great deep-sky objects Cassiopeia has to offer. This session started off with the Heart pretty low in the haze (about 30 degrees), but I think keeping those early frames worked out better than tossing them. I increased dithering to 20 pixels, which I think helped with the horizontal banding I've been dealing with.

Original
B
Final
C

B

Description: Applied a better set of darks that more closely matched the temperature range of the light frames, since I noticed some hot pixels showing up in the original. Also used StarXTerminator to work on stars and nebula separately (no star reduction).

Uploaded: ...

C

Description: Reprocessed using Pixinsight for the initial crop, DBE, background neutralization and color calibration. I'm not sure why it's such a vastly different image than the original - probably the way PI handles background extraction vs. Photoshop (?). I tried later, but could not come close to this type of image using only PS.

Uploaded: ...

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	Distinct awarded users	Total awarded images
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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.
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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	6154719
PixInsight job	2ZFN8LWJQAXGCI3VQ2R8NTDQ28TJE9KF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m34s.52
RA (top/left)	02h41m10s.37
RA (top/right)	02h43m32s.67
RA (bottom/right)	02h23m08s.72
RA (bottom/left)	02h22m27s.93

Dec (center)	+61°21′30″.3
Dec (top/left)	+59°56′30″.2
Dec (top/right)	+62°34′39″.7
Dec (bottom/right)	+62°44′48″.7
Dec (bottom/left)	+60°05′49″.1

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Contribution Index (beta):

Heart Nebula (IC 1805)

Heart Nebula (IC 1805)

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Image Index:

Contribution Index (beta):

Heart Nebula (IC 1805)

Heart Nebula (IC 1805)

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

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