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