Canon 350D Hap Griffin Baader Mod6x180sec at iso 1600
Celestron 9.25 reduced 0.63Sky and Telescope Online Gallery May 23, 2008
(also known as M14
or NGC 6402
) is a globular cluster
in the constellation Ophiuchus
. It was discovered by Charles Messier
At a distance of about 30,000 light-years (twice the distance of M10 and M12), M14 contains several hundred thousand stars
. At a brightness of magnitude
7.6 it can be easily observed with binoculars
and medium sized telescopes
begin to show some hint of the individual stars of which the brightest is of magnitude +14.
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 or ovoid. M14 spans about 100 light-years across.
M14 contains the considerably large number of over 70 variables, many of them W Virginis stars.
Globular cluster M14 was the first CCD image taken, according to TheSky advertising.May 12, 2008