Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986msngr..46q..20.&link_type=abstract
The Messenger, vol. 46, p. 20-20
Astronomy and Astrophysics
Astronomy
Scientific paper
This picture shows the globular cluster Messier 22 = NGC 6656, photographed (Plate no. 390; exposure 90 min) on August 26, 1913 with the f/17 40 cm astrograph at the Zo-Se station of the Shanghai observatory (P. R. China). The station is situated just south of Shanghai at a geographic latitude of +31°. Since this globular cluster lies in the southern Milky Way at R. A. = 18h 33m; Oecl. = -23° 58', the telescope was pointed close to the southern horizon. Messier 22 is the third nearest globular cluster at a distance of about 3 kpc.
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