A sounding rocket spectroheliometer for photometric studies at extreme ultraviolet wavelengths

Details A sounding rocket spectroheliometer for photometric studies at extreme ultraviolet wavelengths A sounding rocket spectroheliometer for photometric studies at extreme ultraviolet wavelengths

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ssi.....1...23t&link_type=abstract

Space Science Instrumentation, vol. 1, Feb. 1975, p. 23-49.

Computer Science

Sound

3

Apollo Telescope Mount, Calibrating, Far Ultraviolet Radiation, Rocket-Borne Instruments, Spectroheliographs, Ultraviolet Spectrometers, Rocket Sounding, Skylab Program, Sounding Rockets

Scientific paper

Construction and mode of operation are described for a sounding rocket spectroheliometer used to establish the sensitivity of the EUV spectroheliometer on the Skylab Apollo Telescope Mount (ATM). The sounding rocket instrument was calibrated immediately before and after two flights and the calibration was transferred when the rocket and ATM instruments simultaneously measured the average intensity emitted by a quiet area of the solar disk. Descriptions are presented for the payload assembly and flight sequence, the optical system (telescope, spectrometer, and pointing reference camera), the vacuum pumping system, and the instrument electronics. Results obtained from the two flights in August and December 1973 are discussed, which included unambiguous determinations of the absolute intensity emitted by a region of the quiet solar disk over the wavelength range from 1350 to 300 A on two separate occasions and the establishment of photometric accuracy to that of laboratory calibration procedures.

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