Heart Nebula (Eduardo Cuervo Reyes)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD15069 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15665 · HD15785 · HD15851 · HD16183 · HD16429 · 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 1361 · LDN 1362 · LDN 1364 · LDN 1366 · And 9 more.

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Heart Nebula

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Heart Nebula

Color palette:
Colours in this image has been deliberately chosen. It is not possible to assign more than two Chromas to components in an image without creating confusion with the resulting mix. The most common assignment of S2 = R, Ha = G and O3 = B, leads to final colors that are not very easy to interpret. This gets even more obscured when people try to reduce the greens for aesthetic reasons. the same problem appears when people colorize layers.
After some thinking, I decided to create a palette that leads to final colors which remain consistent with the initial assignment.

The only way to do that is to assign two complementary hues to two of the components, and to represent the third component with luminance.

Now you can guess how this ends:

Sulfur is golden (Red and green 2:1),
Oxygen is between blue and cyan (Blue and green 2:1),
Hydrogen is in shades of grey (1:1:1).

Wherever Oxygen and sulfur overlap, they neutralize.

Of course, the final accuracy will depend on whether your image is color calibrated or not (which I must admit, I did not do this time).

Any opinion about this palette?

This was one of the first targets I wanted to shoot since I started using a telescope last year, but the cloudy winter gave no chance. On the weekend of April 13, there were a few hours when the clouds thinned down and partially cleared. I decided to give it a try ... despite the short time available and its low position in the sky at this time of the year. There was also a fair amount of time wasted due to software updates. After all, I think it turned out quite acceptable for my level.

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	9718734
PixInsight job	X05XS0G157CAHPCOBM6TZL4G5YP8O2Q5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h33m24s.27
RA (top/left)	02h42m35s.24
RA (top/right)	02h34m52s.25
RA (bottom/right)	02h23m48s.87
RA (bottom/left)	02h32m01s.54

Dec (center)	+61°27′36″.7
Dec (top/left)	+60°47′38″.2
Dec (top/right)	+62°44′35″.9
Dec (bottom/right)	+62°05′10″.6
Dec (bottom/left)	+60°10′42″.3

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Contribution Index (beta):

Heart Nebula

Heart Nebula

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Image Index:

Contribution Index (beta):

Heart Nebula

Heart Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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