pyrheliometer
spectrohelioscope
radiograph
spectroheliometer
pyranometer
actinometer
roentgenometer
langley
pyrheliometry
radiation pyrometer
solar telescope
solar constant
reflector
solar radiation
spectroheliokinematograph
coronograph
astronomy satellite
insolation
spectrogram
penetrometer
radar astronomy
solar tracker
sun
space reconnaissance
earthlight
photoheliograph
wavemeter
bolometer
infrared
ionization tube
irradiator
ionization chamber
heliocentrism
absorptiometer
sunbed
ring
tanning bed
solargraphic
flocculus
radio observation
skylight
altazimuth
planetarium
actinometry
cosmic radiation
filtergram
ultraviolet radiation
radiation dose
heliograph
astroclimate
dosimeter
radiometer
coronagraph
exosolar
spectromagnetograph
dirty bomb
sunburst
X-ray telescope
photodetector
STEREO
ballistic capsule
sunscreening
sunlight
spacecraft
sunblocking
radiospectrometer
currant bun
spectrophotometer
space vehicle
telespectrograph
Sol System
helioscope
sunshield
Sol system
scintillometer
telespectroradiometer
lithium-drifted silicon detector
SIGINT
sun shot
astrolabe
source of illumination
WINDSAT
telephotometer
quadriradiate
Geiger counter
transilluminator
helio-
spy satellite
sunspot
radio sounding
sunrise
telespectroscope
Phoebean