Messier 4 ( GoldfieldAstro )

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: M 4 · NGC 6121

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Messier 4

Link to TIFF/FITS: http://goldfieldastro.space/page/#!/Messier-4/p/153233205/

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Messier 4

Link to TIFF/FITS: http://goldfieldastro.space/page/#!/Messier-4/p/153233205/

Imaging Telescopes Or Lenses: Takahashi Mewlon-250CRS
Imaging Cameras: ZWO ASI094MC Pro
Mounts: ASA DDM60

Frames:: 60×120″(2h) (gain: 0.00) -5°C bin 1×1
Integration:: 2h
Darks:: 16
Flats:: 16
Flat darks:: 16
Mean FWHM:: 1.72
Temperature:: 3.00

RA center: 16h23m36s.103

DEC center: -26°31′49″.64

Pixel scale: 0.803 arcsec/pixel

Orientation: -90.976 degrees

Field radius: 0.493 degrees

More info:Open

Resolution: 3670x2452

File size: 3.8 MB

Data source: Amateur hosting facility

Remote source: Goldfield Astronomical Observatory

M4 is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.

M4 is conspicuous in even the smallest of telescopes as a fuzzy ball of light. It appears about the same size as the Moon in the sky. It is one of the easiest globular clusters to find, being located only 1.3 degrees west of the bright star Antares, with both objects being visible in a wide-field telescope. Modestly sized telescopes will begin to resolve individual stars, of which the brightest in M4 are of apparent magnitude 10.8.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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	Advanced success
Started	...
Astrometry.net job	4602759
PixInsight job	90FQXI5CNHMK6FCVAH3AU0Q0XEA3F3KA
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h23m36s.103
RA (top/left)	16h22m21s.431
RA (top/right)	16h22m24s.544
RA (bottom/right)	16h24m51s.218
RA (bottom/left)	16h24m47s.103

Dec (center)	-26°31′49″.64
Dec (top/left)	-26°07′37″.17
Dec (top/right)	-26°56′32″.41
Dec (bottom/right)	-26°55′59″.25
Dec (bottom/left)	-26°07′04″.80

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