N
STAR
DOME
b
CASSIO
¡
`
P E IA
LA
b
f
_
AM
E
L
O PA
R
DA
LIS
`
CE
RT
c
CEP
a
HEU
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
NE
the direction you’re facing. The
stars above the map’s horizon
now match what’s in the sky.
A
+
S
_
`
d
Polaris _
NCP
b
D
1
`
c
a
RA
CO
f
`
b
¡
c
a
Mizar
M51
d
4
¡
5
`
b
c
a
VIRGO
4
_
`
Jup
LI
BR
SC
O
RP
a
m
SE
b
A
/
M10
Spica
_
i te r
CO
`
/
IU
S
LU
d
e
PU
f
S
a
b
g
d
i
NGC 5128
+
`
C E N TA
¡
c
S
RV
US
a
C
¡
_
HY
M83
_
A ST R O N O M Y • MAY 2018
S
M6
_
a
Lower-temperature stars appear orange
Fainter stars can’t excite our eyes’ color
receptors, so they appear white unless you
use optical aid to gather more light
_
d
Ar
ctu
ru
s
`
Slightly cooler stars appear white
The coolest stars glow red
A star’s color depends
on its surface temperature.
Intermediate stars (like the Sun) glow yellow
E
A
M NIC
O
E
C R
BE
M
Path of the Sun (ecliptic)
An
ta
re
s
m
_ M
4
STAR COLORS
The hottest stars shine blue
_
/
H
3.0
4.0
5.0
d
0.0
_
L
STAR
MAGNITUDES
Sirius
E
38
M8
Planets are shown
at midmonth
•
•
•
•
•
•
M82
midnight May 1
11 P . M . May 15
10 P . M . May 31
1.0
2.0
URSA
MINOR
The all-sky map shows
how the sky looks at:
U RU S