title: An optical system for monochromatic photography of the electron corona.
abstract: Description and the performance are given of a reflecting telescope and accessory optics used to feed a Lyot Halpha tunable filter, and then to obtain monochromatic images near the Halpha wavelength. The instrumentation has been designed for coronal photography to be taken inside and outside the line during a total eclipse.
authors.forename: K E
authors.initials: KE
authors.lastname: Kissell
authors.forename: C
authors.initials: C
authors.lastname: Morais
authors.forename: A
authors.initials: A
authors.lastname: Righini
authors.forename: G
authors.initials: G
authors.lastname: Righini