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Celestial hemisphere:  Southern  ·  Constellation: Ophiuchus (Oph)  ·  Contains:  HD159837  ·  M 14
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M14 Globular Cluster of Stars, KuriousGeorge
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M14 Globular Cluster of Stars

Getting plate-solving status, please wait...
M14 Globular Cluster of Stars, KuriousGeorge
Powered byPixInsight

M14 Globular Cluster of Stars

Equipment

Imaging Telescopes Or Lenses
Planewave CDK24
Imaging Cameras
ZWO ASI6200MM Pro
Mounts
Planewave L-600
Filters
Astrodon Gen2 E-Series Tru-Balance Blue · Astrodon Gen2 E-Series Tru-Balance Green · Astrodon Gen2 E-Series Tru-Balance Lum · Astrodon Gen2 E-Series Tru-Balance Red
Accessories
Planewave Delta T Heater · Planewave Electronic Focus Accessory (EFA) Kit
Software
Adobe Photoshop · Diffraction Limited MaxIm DL · Planewave Platesolve2 · Planewave PWI3 · Planewave PWI4 · Pleiades Astrophoto PixInsight
Guiding Cameras
Starlight Xpress Ultrastar M

Acquisition details

Dates:
June 23, 2022 ·  June 24, 2022 ·  June 27, 2022 ·  July 2, 2022
Frames:
Astrodon Gen2 E-Series Tru-Balance Blue: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Astrodon Gen2 E-Series Tru-Balance Green: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Astrodon Gen2 E-Series Tru-Balance Lum: 429×60″(7h 9′) (gain: 100.00) -5°C bin 2×2
Astrodon Gen2 E-Series Tru-Balance Red: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Integration:
13h 9′
Darks:
40
Flats:
80
Flat darks:
80
Bias:
20
Avg. Moon age:
20.23 days
Avg. Moon phase:
14.39%
Mean SQM:
21.50
Mean FWHM:
1.70

RA center: 17h37m35s.282

DEC center: -03°15′00″.81

Pixel scale: 0.391 arcsec/pixel

Orientation: 0.924 degrees

Field radius: 0.310 degrees

WCS transformation: thin plate spline

More info:Open 

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Resolution: 4749x3150

File size: 4.1 MB

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

Description

My goal here was to go deep or go home. (-:

Over several days I collected many 60s subs, but only kept the best 429 between 1.4" and 2".

5 minute RGB subs (2 hours per color) were then collected between 1.8" and 2.6".

With this bright object and the number of subs, noise reduction is minimal to help preserve the faintest stars and several tiny galaxies.

"M14 (NGC 6402) is a globular cluster of stars in the constellation Ophiuchus. It was discovered by Charles Messier in 1764.

At a distance of about 30,000 light-years, M14 contains several hundred thousand stars. At an apparent magnitude of +7.6 it can be easily observed with binoculars. 

The total luminosity of M14 is in the order of 400,000 times that of the Sun corresponding to an absolute magnitude of -9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.

A total of 70 variable stars are known in M14, many of the W Virginis variety common in globular clusters. In 1938, a nova appeared, although this was not discovered until photographic plates from that time were studied in 1964. It is estimated that the nova reached a maximum brightness of magnitude +9.2, over five times brighter than the brightest 'normal' star in the cluster."

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M14 Globular Cluster of Stars, KuriousGeorge

In these public groups

ASI 6200 MM Pro
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