Heart Nebula (Robert H. Kutner)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 12.08 · 626 Notburga · IC 1795 · IC 1805 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LBN 650 · LBN 654 · LBN 655 · LBN 656 · LBN 657 · LBN 658 · LDN 1359 · LDN 1360 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · LDN 1370 · LDN 1371 · LDN 1372 · LDN 1373 · NGC 896 · And 1 more.

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Heart Nebula

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Heart Nebula

ASIAir pro to acquire ~130 to 80 x 300s images @ -10c & 120g for Ha, Sii, & Oiii, ~96% were usable. For RGB, for stars, 10 x 10s images @ -10c & 120g.

Blink / Subframe Select, Calibrated (60 Dark, 60 Flat, 100 Bias), Star Aligned all images with PixInsight. Used the Normalized Scale Gradient for integration.

For Ha, Sii, & Oiii channels: Cropped, DBE, TGV, MTT, (& duplicated the Ha here for the Lum), EZ Soft Stretch, StarNet for star removal, and channel combined using PixelMath*. The duplicated Ha -> Lum was Mask Stretched, HDR, LHT, EZStar Reduction, moved to PS for noise reduction, then LRGB Combined with the PixelMath SHO image in PI.

RGB filter data combined with Channel Combination, STF stretched, Image was masked with an inverted Star Mask and replaced with SHO image using Pixel Math to add the nebulosity around the stars.

Combined image was TGV, MMT, & Curves modified, Resampled, Cropped, and Annotated.

*R = (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha
G = ((Ha*Sii)^~(Ha*Sii))*(.8*Ha+.2*Oiii) + ~((Ha*Sii)^~(Ha*Sii))*(.9*Oiii)
B = .9*Oiii + .1*Ha

Original
Final
E

E

Description: Added 3 more nights of data - 100 frames of Oiii, 50 of Sii, & 50 more for Ha too.

Uploaded: ...

Cloudy Nights

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	5222393
PixInsight job	KJW7LDT3DI949S8MPZT7EK7AUZWNLEV1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m56s.24
RA (top/left)	02h42m01s.64
RA (top/right)	02h40m44s.44
RA (bottom/right)	02h23m04s.13
RA (bottom/left)	02h25m50s.37

Dec (center)	+61°24′28″.1
Dec (top/left)	+60°05′32″.9
Dec (top/right)	+62°51′59″.9
Dec (bottom/right)	+62°40′51″.2
Dec (bottom/left)	+59°55′26″.7

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Heart Nebula

Heart Nebula

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Heart Nebula

Heart Nebula

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