title: X-ray Photographs of a Solar Active Region with a Multilayer Telescope at Normal Incidence.
abstract: An astronomical photograph was obtained with a multilayer x-ray telescope. A 4-centimeter tungsten-carbon multilayer mirror was flown as part of an experimental solar rocket payload, and successful images were taken of the sun at normal incidence at a wavelength of 44 angstroms. Coronal Si-XII emission from an active region was recorded on film; as expected, the structure is very similar to that observed at O-VIII wavelengths by the Solar Maximum Mission flat crystal spectrometer at the same time. The small, simple optical system used in this experiment appears to have achieved a resolution of 5 to 10 arc seconds.
authors.forename: J H
authors.initials: JH
authors.lastname: Underwood
authors.forename: M E
authors.initials: ME
authors.lastname: Bruner
authors.forename: B M
authors.initials: BM
authors.lastname: Haisch
authors.forename: W A
authors.initials: WA
authors.lastname: Brown
authors.forename: L W
authors.initials: LW
authors.lastname: Acton