Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..331..442s&link_type=abstract
IN: Instrumentation in astronomy IV; Proceedings of the Fourth Conference, Tucson, AZ, March 8-10, 1982 (A83-31976 14-35). Belli
Astronomy and Astrophysics
Astronomy
22
Astronomical Spectroscopy, Electrophotometers, Line Spectra, Solar Instruments, Bandpass Filters, Mica, Solar Corona, Solar Spectra
Scientific paper
A solar corona photoelectric photometer has been constructed that operates at the three coronal lines, Fe XIV (5302.9 A), Ca XV (5694.5 A) and Fe X (6374.5 A), using mica etalons and narrow-band interference filters. The photometer is used with a 40-cm coronagraph feed. In each case, the corona is discriminated from the sky background, by means of polarization-chopping between the line passband and a reference continuum passband. A mica etalon allows the reference passband to be arbitrarily located in the vicinity of the spectral line. Also, the width of the etalon passbands can be matched to that of the coronal line width, and the transmittance can be high if extremely transparent mica is used. A photomultiplier detects the two signals, their difference being proportional to coronal radiance. The photometer performance is illustrated by radiance plots derived from observations obtained at a fixed height in the corona at equally-incremented field points around the limb.
No associations
LandOfFree
Solar corona photoelectric photometer using mica etalons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Solar corona photoelectric photometer using mica etalons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar corona photoelectric photometer using mica etalons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1032818