NOVEMBER 2019
skyandtelescope.comPAGE 68 PAGE 60 PAGE 48THE ESSENTIAL GUIDE TO ASTRONOMY
CELESTIAL CALENDAR:
Mercury Crosses the SunOPEN CLUSTERS:
A Full Deck of KingsTEST REPORT:
Celestron’s 8-inch Astrograph
Ormsby MacKnight
Mitchel: Story of an
American Astronomer
Page 30Seeing the
Surfaces
of Stars
Page 24Calibrating
for Great
Astrophotography
Page 36Page 16Our
Evolving
Map
of the
Milky Way