M20 | The Trifid Nebula in HOO+RGB (Kevin Morefield)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B85 · M 20 · NGC 6514 · Trifid Nebula

Powered byPixInsight

M20 | The Trifid Nebula in HOO+RGB

Powered byPixInsight

M20 | The Trifid Nebula in HOO+RGB

I've always like the detail Ha presents in M20 as compared to Luminance. But every time I try to start a narrowband version I get discouraged with how little the other channels bring and stop. This time I shot quite a bit of Ha and OIII and added the previous data as well. I really liked the nuance both the OIII and Ha brought to the center of the nebula so I focused on the that and cropped tight.

The color here is a mix of the HOO narrowband and RGB. The luminance is a 50/50 mix of OIII and Ha.

The data were captured between in three blocks in 2016, 2018, and 2020 using three cameras and two mounts. The latest data is by far the sharpest and it dominates.

Star registration was done in PI using distortion correction. This is almost a requirement when shooting between 15 and 25 degrees off the horizon. Noise reduction was via Topaz Denoise AI, sharpening in CCDStack, Unsharp Masking and High Pass Filter in Photoshop. Color adjustments and Curves in Photoshop.

Fine Art Astrophotography
QHY Users Group

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	3641542
PixInsight job	T4QDF2AXTYJ4PR4IQ5I32MZA0BGF2ZDU
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h02m31s.496
RA (top/left)	18h03m09s.837
RA (top/right)	18h03m31s.971
RA (bottom/right)	18h01m53s.311
RA (bottom/left)	18h01m30s.841

Dec (center)	-22°58′01″.63
Dec (top/left)	-23°15′15″.71
Dec (top/right)	-22°44′35″.81
Dec (bottom/right)	-22°40′47″.11
Dec (bottom/left)	-23°11′26″.00

Image Index:

Contribution Index (beta):

M20 | The Trifid Nebula in HOO+RGB

M20 | The Trifid Nebula in HOO+RGB

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

M20 | The Trifid Nebula in HOO+RGB

M20 | The Trifid Nebula in HOO+RGB

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information