Calibration screen issues for high-performance astronomical telescope systems

Details Calibration screen issues for high-performance astronomical telescope systems Calibration screen issues for high-performance astronomical telescope systems

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.2871.1231p&link_type=abstract

Proc. SPIE Vol. 2871, p. 1231-1234, Optical Telescopes of Today and Tomorrow, Arne L. Ardeberg; Ed.

Physics

1

Scientific paper

For telescopes without internal calibration systems, screen flats are invaluable for calibration (Gililland, 1992; Gullixson, 1992; Massey and Jacoby, 1992; Tobin, 1993). An understanding of the surface optical properties of dome flat screens and their illumination systems is important in obtaining high quality calibration data over the widest possible spectral range. However, most current screens have a number of limitations. The range of their spectral reflectivity is limited and their bidirectional scatter properties are not Lambertian. The illuminating systems of calibration screens are not optimized as well. This paper explores some aspects of the optical properties of screens and their illumination systems.

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