Testing of the Kuiper Airborne Observatory 91-CM telescope

Details Testing of the Kuiper Airborne Observatory 91-CM telescope Testing of the Kuiper Airborne Observatory 91-CM telescope

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979uat..rept.....p&link_type=abstract

Final Report Arizona Univ., Tucson. Optical Sciences Center.

Computer Science

Airborne Equipment, Alignment, Image Enhancement, Mirrors, Telescopes, C-141 Aircraft, Dynamic Tests, Focal Plane Devices, Instrument Errors, Static Tests

Scientific paper

The 91 cm telescope of the Kuiper Airborne Observatory was tested for optical figure errors in the surface of the mirrors and misalignment of the optical components. When the present set of optical components are installed in the telescope in proper alignment, the telescope produces an image with 80% of the energy in a circle of 1.50 arc seconds in diameter; that is, a 0.11 mm spot diameter in the focal plane. The primary mirror, an f/2 parabola, was tested against a flat and has a quality that puts 80% of the energy in a 0.51 arc second diameter spot. Two principal sources account for the residual error: the tertiary folding flat and the chopping secondary. It appears that the method of mounting the folding flat causes some distortion and that the secondary mirror has some residual spherical aberration in its figure.

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