|
|
astro-ph
|
|
|
|
|
|
|
A&ATr
|
|
|
|
|
|
|
|
|
--
|
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
I
|
J
|
K
|
L
|
M
|
N
|
O
|
P
|
Q
|
R
|
S
|
T
|
U
|
V
|
W
|
X
|
Y
|
Z
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
742 "N"
()
N
Observatorio Astronomico
Nacional
nacreous
clouds
nadir
nadir
measures
Nagler
eyepiece
visible to the
naked
eye
naked-eye
naked
eye brightness
naked-eye
object
naked-eye
star
Bayer
name
Nancay
radio observatory
nanometer
Narrabri
interferometer
narrow-band
narrow-band
burst
narrow
band filter
narrow(-band)
filter
narrow-band
photoelectric photometry
narrow
band photometry
narrow-band
photometry
narrow-band
polarimeter
narrow-range
narrow-range
equipment
NASA
NASA
extragalactic data set
NASA
infrared telescope
NASA,
Nasmyth
Nasmyth
focus
Nasmyth's
focus
Nasmyth
system
National
Aeronautic and Space Administration
National
Astronomical Observatory
National
Center for Radio Astrophysics
Centre
National
d'Etudes Spatiales
National
Optical Astronomy Observatories
National
Solar Observatory
National
Space Science Data Center
natural
breadth
natural
frequency
natural
life time
natural
light
natural
line broadening
natural
satellite
natural
vibrations
natural
width
natural
year
wave
nature
Nautical
almanac
nautical
almanac(k)
nautical
astronomy
nautical
tables
nautical
twilight
United States
Naval
observatory
space
navigation
navigational
instrumentation
navigational
instrumentation
navigational
stars
navigation
satellite
navigation
triangle
n-body
problem
Mars at
near
approach
nearby
galaxies
nearby
stars
near
field response
near
infrared
near
infrared region
nearly
symmetric top
near
point of clear vision
star
near
the zenith
near
ultraviolet
resolution of a
nebula
two colliding
nebulae
nebula
filter
nebula
receding nebulae
nebular
line
nebular
remnant of a supernova
nebular
spectrograph
nebular
stage of nova
nebular-type
transitions
nebular
variables
nebulosity
nebulous
object
negative
negative
absorption
negative
acceleration
negative
branch
negative
cosmological constant
negative
development
negative
drift
negative
energy
negative
excess
negative
eyepiece
negative
image
negative
lens
negative
level
negative
rotational level
solar
neighbourhood
neighbouring
galaxies
neon
NEP
nephelometer
nephoscope
visual
nerve
nested
telescopes
NESTOR
NESTOR
neutrino detector
chromospheric
net
net
flux
deep space
network
Global Oscillation
Network
Group
neutral
absorption
neutral
atom
neutral
filter
neutral
gas
local structure of
neutral
hydrogen
neutral
hydrogen cloud
neutral
hydrogen concentration
neutral
hydrogen content
neutral
hydrogen density
neutral
hydrogen distribution
neutral
hydrogen F
neutral
hydrogen gas
total
neutral
hydrogen mass
neutral
hydrogen motion
neutral
hydrogen region
neutral
medium
neutral
point