Other
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.0907k&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #09.07; Bulletin of the American Astronomical Society, Vol. 33, p.1319
Other
Scientific paper
A Moon-based telescope, suitably configured and equipped, can be employed as a low cost precursor to the Terrestrial Planet Finder mission. The concept is based in part on the ideas of Nisenson and Papaliolios (ApJ. Lett. 548:L201-205, 2001). The Moon is a highly stable observing platform. An advanced non-contact cryogenic bearing mechanism can provide super precise tracking and pointing. The telescope can use field rotation caused by lunar diurnal motion to sweep the optical diffraction pattern around a target star. The primary mirror is to be square, very lightweight, 1-2 meter on the side, with an off-axis shape. It must also have a highly precise optical figure and a superpolished surface. We suggest how such a mirror can be fabricated -at an affordable cost- using a process currently under development. Some preliminary laboratory test results will be presented. In addition, a variety of other advanced spacecraft technologies - propulsion, fuel saving trajectories, thermal management, low mass power systems and landers, etc. - can be combined to significantly reduce mission cost.
Chen Peter C.
Kondo Yoshihiko
Lowman P.
Oliversen Ronald James
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