Thursday, 31 July 2014

NGC 6520




NGC 6520
Open cluster
Constellation - Sagittarius
Distance 6.2Kly
Mag 7.59

Date 28/7/14
Transparency - Good
SQM 21.33

Telescope 16" f/4.5
EP - 17mm Nagler x129

Sketch notes
Fairly small and compact cluster, built up of mainly faint stars around the same magnitude as the background of Milky way stars.

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