M-80 Globular Cluster
M-80 is one of the most compact and dense globular clusters.  It's a little difficult for northern observers because it is usually low in the southern sky.   The bright stars of Scorpius make it relatively easy to locate though.   Even the f10 image shows M-80 as a small target.  You should be able to see in in binoculars on a 90 mm scope.   Be sure to look at the image taken with the HST.  It clearly shows how tightly packed the stars of M-80 are.
    Constellation:  Scorpius

    Size:  9'

    Magnitude: 7.3

    Magnitude Tip: 13.4

    RA:  16h 17m 3s

    Dec: -22m 58m 30s


Click here for larger image

Scope:   Orion MAK 500
Canon EOS 20d
Focal Ratio: f5.5
Exposure:  2 min
Scope:   8" LX 200 SCT
MX-5C CCD Camera
Focal Ratio: f4
Exposure:  2 min
Scope:   8" LX 200 SCT
MX-5C CCD Camera & STAR 2000 Autotracker
Focal Ratio: f6.6
Exposure:  10 min
 
Scope:   8" LX 200 SCT
MX-5C CCD Camera & STAR 2000
Focal Ratio: f10
Exposure:  15 min
Link to the SEDS M-80 Page

Link to HST Image of M-80

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