Messier 13  -  Great Hercules Cluster

100%  resolution (2.2MB)

200% gif animation of a sub-exposure with FWHM 1.3 and 1.9 arcsec

DSLR widefield image

Object data of M13

Object type: Globular star cluster (V)
Size: 20'
Magnitude: 5.9 mag
Constellation: Her
Distance: 22,000 Ly
Notes: Messier 13 is a globular star cluster of about 300,000 stars in the constellation Hercules. Many background galaxies are visible in the above image.

Exposure data

Date: 2016-06-28 + 2016-07-01 + 2016-07-04 + 2016-07-07
Location: Nussbach / Austria (400m)
Telescope: 12" Newtonian telescope (f=1120mm)
Camera: QSI 660wsg-8 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: ASA DDM85
Exposure time: L 96x2min / R 36x2min / G 36x2min / B 36x2min
Exposure time total: 6h 48min