Extreme ultraviolet spectrograph ATM experiment S082B

Details Extreme ultraviolet spectrograph ATM experiment S082B Extreme ultraviolet spectrograph ATM experiment S082B

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apopt..16..879b&link_type=abstract

Applied Optics, vol. 16, Apr. 1977, p. 879-886.

Physics

Optics

91

Apollo Telescope Mount, Skylab Program, Solar Instruments, Ultraviolet Spectrometers, Far Ultraviolet Radiation, Photographic Film, Photographic Recording, Satellite-Borne Instruments

Scientific paper

The extreme-ultraviolet double-dispersion photographic spectrograph for the Apollo Telescope Mount (ATM) experiment S082B on Skylab is described. Novel features were the use of a predisperser grating with a ruling whose spacing varied approximately linearly with distance for the purpose of increasing the instrument speed by reducing the astigmatism and a photoelectric servosystem to stabilize to 1 sec of arc the solar image at various near-limb positions. The 970-3940-A range was covered in two sections with effective resolving power of approximately 30,000 from 1100 A to 1970 A. The spatial resolution was 2 x 60 solar sec of arc. During the Skylab mission 6400 exposures were made with the instrument pointed by an astronaut at selected and recorded solar positions.

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