Messier 75

M75 is a globular cluster in the constellation Sagittarius. It is one of the more remote globulars, over 61,000 light-years away and as much as 100,000 according to some sources. Quite centrally condensed, it is also large and bright (over 100 light-years across and a couple of hundred thousand times as bright as the Sun).


In a 8" scope, at low power, this cluster looks more like a tailless comet than anything else. No stars could be resolved, even at high magnification. It has a bright central glow which rapidly fades away.
You can find more information about this Messier object by visiting: SEDS - The Messier Catalog.


    M75
    NGC 6864
    Other description: Globular cluster unresolved.
    Constellation: Sagittarius
    Dreyer description: Globular cluster, bright, pretty large, round, very much brighter middle bright nucleus, partially resolved; = M75.
    Magnitude: 8.6
    RA: 20h 06m 21.2s Dec: -21°54'20"
    RA: 20h 06m 06.0s Dec: -21°55'00" (Epoch 2000)
    Azm: 189°20'06" Alt: +21°17'06"
    Rise: 22:25 Transit: 02:53 Set: 07:17
    Size: 6.0'

RASC Charlottetown Centre