These are the most frequently used words in this book.
above
amateur
aperture
appear
astronomers
astronomy
best
better
binoculars
bright
camera
ccd
celestial
clusters
color
comet
dark
degrees
detail
down
during
earth
even
exposure
eye
eyepiece
far
features
few
field
film
filters
first
focal
galaxy
go
good
high
however
image
instrument
large
length
lens
light
long
look
magnitude
may
meade
milky
models
moon
mount
nebula
new
night
north
now
objects
observers
observing
often
optics
orion
photo
planet
planetary
point
power
provide
red
refractor
require
right
scope
second
see
seen
set
show
size
sky
small
solar
stars
sun
system
take
targets
telescope
time
tube
two
type
use
used
view
visible
years