Physics – Optics
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2814...59h&link_type=abstract
Proc. SPIE Vol. 2814, p. 59-65, Cryogenic Optical Systems and Instruments VII, Lawrence G. Burriesci; James B. Heaney; Eds.
Physics
Optics
Scientific paper
The composite infrared spectrometer (CIRS) instrument is scheduled to fly on NASA's Cassini Orbiter to Saturn in 1997. CIRS consists of two Fourier transform spectrometers, the mid-IR (MIR) and the far-IR (FIR), which measure a spectral range from 7 to 1000 microns. The optical alignment of CIRS begins with alignment of the optical subsystems which are then integrated and aligned to each other. These subsystems include the 0.5 meter Cassegrain telescope, collimating optics aft of the telescope, the moving mirror scanning mechanism, MIR and FIR interferometers, and the MIR and FIR focal planes. This paper discusses the alignment verification test developed to verify the opto-mechanical alignment of the collimating optics and the fixed mirrors of the interferometers. The verification test utilized the ZYGO Mark IVxp interferometer to test the wavefront of the aligned subsystem. The test set-up, requirements and results are presented.
Hagopian John G.
Hayes Patricia A.
Lyons James J.
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