title: Simple Cassegrain scanning system for infrared astronomy.
abstract: A simple inexpensive and compact Cassegrain reimaging system for scanning IR images is described. Its performance is as good as or better than a conventional scanning secondary in all important respects.
authors.forename: J
authors.initials: J
authors.lastname: Apt
authors.forename: R
authors.initials: R
authors.lastname: Goody
authors.forename: L
authors.initials: L
authors.lastname: Mertz