Physics – Optics
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..444...53h&link_type=abstract
IN: Advanced technology optical telescopes II; Proceedings of the Meeting, London, England, September 5, 6, 1983 (A85-25230 10-8
Physics
Optics
1
Balloon-Borne Instruments, Infrared Astronomy, Reflecting Telescopes, Submillimeter Waves, Borosilicate Glass, Cassegrain Optics, Electronic Control, Far Infrared Radiation, Honeycomb Structures, Imaging Techniques, Mirrors, Optical Properties, Photometry, Pointing Control Systems, Spectroscopy
Scientific paper
A 3-m aperture balloon-borne telescope for far-IR and submillimeter astronomy has been proposed in order to obtain photometry, spectroscopy, and imaging in the 30 micron-1 mm spectral region, which is inaccessible to ground-based telescopes. The largest previous balloon-borne instruments have been of about 1-m diameter. The present 3-m instrument is a Cassegrain design with an angular resolution that is diffraction-limited to a wavelength of 30 microns, and it will be supported on a three-axis, gyroscopically stabilized system whose pointing stability is of the order of 1 arcsec rms. Assuming a lightweight fused silica or Pyrex primary mirror, an overall weight for both telescope and gondole of 2800 kg is projected.
Fazio Giacomo
Harper Doyal A.
Hoffmann William F.
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