title: A rocket-borne liquid helium-cooled infrared telescope. I: dewar and optics.
abstract: A telescope for rocket-borne ir astronomy is described. It consists of a 166-mm cassegrainian telescope cooled to liquid helium temperature and operated with a total radiation chopper. Details of the optical, cryogenic, and electronic designs are given.
authors.forename: D P
authors.initials: DP
authors.lastname: McNutt
authors.forename: K
authors.initials: K
authors.lastname: Shivanandan
authors.forename: P D
authors.initials: PD
authors.lastname: Feldman