Abstract

An image or spectrum focal plane scanning technique is described in which the output beam is displaced but undeviated relative to the input beam. Additionally, the focus is constant, introduced polarization is less than 0.7%, and one form permits rapid scanning over an image 90 mm in size. Performance in terms of linearity and jitter is given. The need for rapid scan methods in solar spectrophotometry follows from observations in the solar continuum light, which show, at low scanning frequencies (f), excess fluctuations over the expected shot noise. This excess noise increases proportionally to 1/f for f < ~ 10 Hz.

© 1968 Optical Society of America

The McMath Solar Telescope of Kitt Peak National Observatory

A. Keith Pierce
Appl. Opt. 3(12) 1337-1346 (1964)

Electronic Scanning Spectrometer for Measurements of Rapidly Changing Spectra

Doran J. Baker and Allan J. Steed
Appl. Opt. 7(11) 2190-2194 (1968)

Solar magnetograph employing integrated diode arrays

W. C. Livingston, J. Harvey, C. Slaughter, and D. Trumbo
Appl. Opt. 15(1) 40-52 (1976)

Rapid Scan Spectrometers for the Diagnostics of Transient Plasmas

R. A. Hill
Appl. Opt. 7(11) 2184-2189 (1968)

Rapid Scanning Raman Spectroscopy

Michel Delhaye
Appl. Opt. 7(11) 2195-2199 (1968)