Messier 39 ( Mathieu Guinot )

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: M 39 · NGC 7092

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Messier 39

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Messier 39

Imaging Telescopes Or Lenses: Takahashi TOA-130NS
Imaging Cameras: ZWO ASI2600MM Pro
Mounts: Sky-Watcher EQ6-R Pro
Filters: Antlia 3.5nm Narrowband H-alpha 36 mm · Antlia Blue 36 mm · Antlia Green 36 mm · Antlia Luminance 36 mm · Antlia Red 36 mm
Accessories: Takahashi 645 Flattener for TOA-130 (TKA31587S)
Software: Adobe Photoshop · Pleiades Astrophoto PixInsight · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Dates:: June 14, 2023 · June 15, 2023 · June 17, 2023 · June 24, 2023 · July 1, 2023
Frames:: Antlia 3.5nm Narrowband H-alpha 36 mm: 78×300″(6h 30′)
Antlia Blue 36 mm: 40×120″(1h 20′)
Antlia Green 36 mm: 40×120″(1h 20′)
Antlia Luminance 36 mm: 236×120″(7h 52′)
Antlia Red 36 mm: 40×120″(1h 20′)
Integration:: 18h 22′
Avg. Moon age:: 20.01 days
Avg. Moon phase:: 29.80%

Basic astrometry details

Astrometry.net job: 7987988

RA center: 21h31m51s.1

DEC center: +48°26′09″

Pixel scale: 0.781 arcsec/pixel

Orientation: 182.617 degrees

Field radius: 0.801 degrees

Resolution: 6152x4080

File size: 15.9 MB

Data source: Backyard

M39, also known as NGC 7092, is a beautiful open cluster located only 800 light-years away in a dense portion of the Milky Way in Cygnus. Its age is estimated between 230 and 300 million years and it has only about thirty stars for a diameter of 7 light years. Its angular size is about 31 arc minutes which corresponds to about the same size as that of the full Moon.
I really like those clusters surrounded by Halpha emission which highlights them and brings depth to the picture.

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

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.
Dismissals 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	7987988
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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