Rocket spectroheliograph for the Mg II line at 2802.7 angstrom units.
Rocket-borne spectroheliograph for monochromatic solar photography in Mg II 2802.7 A line noting filter bandwidth, film polarizers and temperature control
Fredga, K.↗
Engineering topics
Publications and source records attributed to Fredga, K..
Rocket-borne spectroheliograph for monochromatic solar photography in Mg II 2802.7 A line noting filter bandwidth, film polarizers and temperature control
Solid state device for controlling temperature of optical birefringence filter for sounding rockets
Description of rocket-borne spectroheliograph designed to take monochromatic pictures of sun
Rocketborne filter heliograms in Mg II line at 2802.7 angstroms including tabulated data
Monochromatic filterheliograms of magnesium doublet in solar ultraviolet spectrum taken from Aerobee-Hi rocket