NGC 7293, Helix Nebula, HOO (AnaTa)

Celestial hemisphere: Southern · Constellation: Aquarius (Aqr) · Contains: Helix Nebula · NGC 7293

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NGC 7293, Helix Nebula, HOO

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NGC 7293, Helix Nebula, HOO

This is HOO image with RGB stars. Panel B represent comparison with HST.

Processing:
RGB are combined.
Cropping for Ha, O3, Lum and RGB
DBE for Ha, O3, Lum and RGB
Color Colib for RGB
Blur and Noise XT for Ha, O3, Lum and RGB
Manual stretching (with HT) for Ha, O3, Lum and RGB
Combined RGB and Lum.
Noise XT again for LRGB
Stretching again with HT for LRGB
Star XT. These LRGB stars have been kept.

Noise XT again for Ha and O3
Stretching again with HT for Ha and O3
Combined HOO in Pixel-Math
Formula
Red: 1.3*Ha-0.6*O3
Green: O3+0.4*Ha
Blue: 1.3*O3

Star XT. These HOO stars have been discarded.
Simple Lum mask for HOO
Local Histogram Equalization: Kernel radius of 40, 150 and 250
Multiscale-median transform for sharpness, setting 0.4-0.5
Curves: saturation, hue and brightness are manipulated.
Mask off.

Saturated and shrinked RGB stars are added.
Star Reduction (new script)
Rotated, Cropped
Done

Original
Final
C

Nebulas (Planetary)

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	8172067
PixInsight job	DCZUT9QIJSSOIUL9OW9ZC1BCPO1R6A35
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h29m42s.360
RA (top/left)	22h30m30s.574
RA (top/right)	22h28m53s.194
RA (bottom/right)	22h28m53s.986
RA (bottom/left)	22h30m31s.683

Dec (center)	-20°48′59″.99
Dec (top/left)	-20°37′28″.30
Dec (top/right)	-20°37′42″.33
Dec (bottom/right)	-21°00′30″.20
Dec (bottom/left)	-21°00′16″.55

Image Index:

Contribution Index (beta):

NGC 7293, Helix Nebula, HOO

NGC 7293, Helix Nebula, HOO

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Image Index:

Contribution Index (beta):

NGC 7293, Helix Nebula, HOO

NGC 7293, Helix Nebula, HOO

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

In these collections

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