Hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  Hercules Globular Cluster  ·  M 13  ·  NGC 6205  ·  NGC 6207
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M13 Great Globular Cluster in Hercules, 



    
        

            Juan B. Torre Valle
M13 Great Globular Cluster in Hercules
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M13 Great Globular Cluster in Hercules

Getting plate-solving status, please wait...
M13 Great Globular Cluster in Hercules, 



    
        

            Juan B. Torre Valle
M13 Great Globular Cluster in Hercules
Powered byPixInsight

M13 Great Globular Cluster in Hercules

Technical card

Imaging telescopes or lenses: Takahashi FSQ 106 EDX4

Imaging cameras: Atik 460 EX Mono

Mounts: SkyWatcher AZ EQ6

Software: Pleaides Astrophoto PixInsight 1.8 Ripley  ·  PHD2 Guiding 2.6.3 PHD-Guiding  ·  SGP Pro

Filters: Baader Planetarium Baader 1,25" R  ·  Baader Planetarium Baader 1,25 UV-IR cut  ·  Baader Planetarium Baader 1.25" G  ·  Baader Planetarium Baader 1.25" B

Accessory: QHYCCD PoleMaster PoleMaster  ·  Atik EFW2 Filter Wheel  ·  Lunatico Astronomia Seletek Armadillo 2


Dates:June 12, 2021June 13, 2021June 14, 2021

Frames:
Baader Planetarium Baader 1,25 UV-IR cut: 30x40" (20') bin 1x1
Baader Planetarium Baader 1,25" R: 30x60" (30') bin 1x1
Baader Planetarium Baader 1.25" B: 30x60" (30') bin 1x1
Baader Planetarium Baader 1.25" G: 30x60" (30') bin 1x1

Integration: 1h 50'

Avg. Moon age: 2.81 days

Avg. Moon phase: 9.23%


Basic astrometry details

Astrometry.net job: 4916642

RA center: 16h41m39s

DEC center: +36°2848

Pixel scale: 1.760 arcsec/pixel

Orientation: 344.088 degrees

Field radius: 0.748 degrees


Resolution: 2340x1972

Locations: Mi casa, Matalascañas, Huelva, Spain

Data source: Backyard

Description

M13 was discovered by Edmond Halley in 1714, and cataloged by Charles Messier on June 1, 1764, into his list of objects.About one third of the way from Vega to Arcturus, four bright stars in Herculēs form the Keystone asterism, the broad torso of the hero. M13 can be seen in this asterism 2⁄3 of the way north (by west) from Zeta to Eta Herculis. Although only telescopes with great light-gathering capability fully resolve the stars of the cluster, M13 may be visible to the naked eye depending on circumstances. With a low-power telescope, Messier 13 looks like a comet or fuzzy patch. The cluster is visible throughout the year from latitudes greater than 36 degrees north, with the longest visibility during Northern Hemisphere spring and summer.
About 145 light-years in diameter, M13 is composed of several hundred thousand stars, the brightest of which is a red giant, the variable star V11, also known as V1554 Herculis, with an apparent visual magnitude of 11.95. M13 is 22,200–25,000 light-years away from Earth.

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M13 Great Globular Cluster in Hercules, 



    
        

            Juan B. Torre Valle