M33 (LRGBH) (rhedden)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: M 33 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

Powered byPixInsight

M33 (LRGBH)

Powered byPixInsight

M33 (LRGBH)

M33 is the famous Triangulum galaxy, one of the largest galaxies in the sky based on angular size. This image was taken at f/5.5 and 550 mm with the Esprit 100ED SuperApo refractor and the QHY268M mono CMOS camera.

Since all of the frames were taken from home in my Bortle 4/5 backyard, removing some light pollution gradients was necessary. I wish I could have shot the image from a good dark site, but the gradient removal went quite well, fortunately. The luminance channel is a synthetic channel consisting of all LRGB frames taken with a median combination. Some modest deconvolution was applied in ImagesPlus to pull out more detail in the spiral arms.

H-alpha frames were added to the LRGB image by merging the H-alpha highlights into the red channel in GIMP. I decided to forego star size reduction with this image, as I just don't think it's necessary. The full resolution image shows a lot more detail in the spiral arms of M33 than I was expecting, which was likely the result of excellent seeing and autoguiding on a couple of the nights.

Overall, this image might be the best I have taken so far with the Esprit 100ED.

Northeast Imagers
The refractors!
CMOS Imagers
Cloudy Nights
QHY Users Group
Imaged with N.I.N.A.
N.I.N.A. Users
Gimp Processing
Skywatcher Esprit ED Super APO Triplet
Musical Imagers
QHY268M/ZWO2600M Images
AstroBin Platform open discussions community forum

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	Basic success
Started	...
Astrometry.net job	5062191
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

M33 (LRGBH)

M33 (LRGBH)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

M33 (LRGBH)

M33 (LRGBH)

Equipment

Acquisition details

Description

Comments

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