X-Ray Photographs of a Solar Active Region with a Multilayer Telescope at Normal Incidence

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 emiss...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1987-10, Vol.238 (4823), p.61-64
Main Authors: Underwood, J. H., Bruner, M. E., Haisch, B. M., Brown, W. A., Acton, L. W.
Format: Article
Language:English
Subjects:
Astronomy
Astrophotography
Cameras
Chromosphere and chromosphere-corona transition. Spicules
Earth, ocean, space
Exact sciences and technology
Imaging
Line spectra
Observations
Optics
Reflecting telescopes
Solar activity
Solar Physics
Solar system
Spectral reflectance
Sun
Sunspots
Ultraviolet reflection
Wavelengths
X-ray telescope
X-ray telescopes
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Summary: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.238.4823.61