Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233..364a&link_type=abstract
Astrophysical Journal, Part 1, vol. 233, Oct. 1, 1979, p. 364-373.
Astronomy and Astrophysics
Astrophysics
32
Grazing Incidence, Grazing Incidence Telescopes, Optical Properties, X Ray Telescopes, Arthropods, Eye (Anatomy), Fabrication, Mirrors, Nickel, Resolution, Visual Fields
Scientific paper
A new optical configuration for grazing-incidence, imaging X-ray telescopes is described that is similar to the reflective eyes of macruran crustaceans such as lobsters. The field of view can be made as large as desired, and it is practical to achieve good efficiency for photon energies up to 10 keV. Spatial resolution of a few seconds of arc over the full field is possible, in principle, if very small reflecting cells can be fabricated. Two model telescopes are described. The first has a field similar to that of optical Schmidt telescopes (8 deg), an aperture of 2.5 m, and a spatial resolution of 30 arcsec. In a two-year mission it would survey the entire sky to the limiting sensitivity of the Einstein telescope, and it has the advantage of good response at the 7 kV iron emission lines. The second telescope, an all-sky monitor with a 2-pi ster field of view, is a hemisphere 3 m in diameter. It reaches the limiting sensitivity of Uhuru in approximately one hour with positions accurate to approximately 2 arcmin, and can detect and locate quite faint burst sources.
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