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C R
VIRGO
COMA
BERENICES
CORVUS
LIBRA
H Y
CAPUTSERPENS
CAUDASERPENS
SCUTUM
OPHIUCHUS
SCORPIUS
LUPUS
CENTAURUS
CASSIOPEIA
C AMELOPARDALIS
URSA
MINOR
CEPHEUS
LACERTA
BOÖTES CANES VENATICI
BOREALISCORONA
CYGNUS
RSAU
AJ
OR
SAGITTAVULPECULA
DRACO
HERCULES
AQUILA
LY R A
Polaris
NCP
M51
M82
M81
Mizar
Arcturus M64
NGP
Denebola
M66
M57
Deneb
M27
M13
Vega
Spica
M104
M16
Antares
M4
M83
M5
NGC 5128
Path of the Sun (ecliptic) Jupiter
38 ASTRONOMY • MAY 2018
STAR
DOME
Sirius
0.0
1.0
2.0
E
N
S
NE
SE
3.0
4.0
5.0
STAR
MAGNITUDES
STAR COLORS
A star’s color depends
on its surface temperature.
- The hottest stars shine blue
- Slightly cooler stars appear white
- Intermediate stars (like the Sun) glow yellow
- Lower-temperature stars appear orange
- The coolest stars glow red
- Fainter stars can’t excite our eyes’ color
receptors, so they appear white unless you
use optical aid to gather more light
How to use this map: This map portrays the
sky as seen near 35° north latitude. Located
inside the border are the cardinal directions
and their intermediate points. To find
stars, hold the map overhead and
orient it so one of the labels matches
the direction you’re facing. The
stars above the map’s horizon
now match what’s in the sky.
The all-sky map shows
how the sky looks at:
midnight May 1
11 P.M. May 15
10 P.M. May 31
Planets are shown
at midmonth