ε
α
β
β
γ
α
γ
ι
η
α
β
γ
α
ε
μ
β
γ
α
δ
ε
α
ζ
β
β
ββ
η ζ
α
ι
ε
ε
α
κ
μ
ε
β α
λ
γ
α
α
π
λ^3
δ
κ β
ζ
ε
η
η
α
β
η ζ
α
ι
δ
β
α
ζ ε β
α
ν
α β
ο^2
δ
σ ε
η
ρ
ζ
σ
ν
π
ξ
γ
δ ζ
ξ
α
β
ο
θ
ε
ζ
γ
δ
ψ
ν λ
μ ι
s
α
_
δ
β
β δ
θ
α
η
γ
ζ
ε
β
α
α
ζ
θ
β
η
γ
LEPUS
PYXIS
HYDRA
CANIS
MAJOR
PUPPIS
VELA
ANTLIA
CRATER
SEXTANS
CAEL
U
H
COLUMBA
ORION
CANIS
MINOR
MONOCEROS
LEO MINOR
LEO CANCER
CAMELOPARDALIS
URSA
MINOR
GEMINI
DRACO
MAJORURSA
VIRGO
VENATICICANES
BERENICESCOMA
LYNX
SSIOPEIAA
CEPHEUS
AURIGA
Adhara
M41
NGC 2477
Aldebaran
M42
Betelgeuse
Rigel
Procyon
M47
Sirius
Denebola
M65
M66
Regulus
Polaris
NCP
Pollux
Castor
M35
M44
M82
M81
M51
M64
NGP
Mizar
M37
M1
NGC
884
Capella
M38
M36
38 ASTRONOMY • FEBRUARY 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:
10 P.M. February 1
9 P.M. February 15
8 P.M. February 28
Planets are shown
at midmonth