The limitations arising from scattered light from lenses and mirrors in a program of daytime astrometry near the sun are discussed. Measurements were made of the angular distribution of the scattered radiance for (1) a coronagraphic lens, (2) a 2.54-cm thick coronagraph quality window, and (3) flat quartz mirrors. Results are also given for the optical elements after they have been exposed in a vacuum for 48 h. The results indicate that the accuracy of a daytime astrometry program would be determined by the shot noise of the scattered light produced by the refracting elements and the sky, each producing equal contributions.
© 1968 Optical Society of America
Original Manuscript: February 5, 1968
Published: July 1, 1968
G. R. Hostetter, D. L. Patz, H. A. Hill, and C. A. Zanoni, "Measurements of Scattered Light from Mirrors and Lenses," Appl. Opt. 7, 1383-1385 (1968)