Calibration screen issues for high-performance astronomical telescope systems

Stephen M. Pompea

doi:10.1117/12.269013

21 March 1997 Calibration screen issues for high-performance astronomical telescope systems

Stephen M. Pompea

Proceedings Volume 2871, Optical Telescopes of Today and Tomorrow; (1997) https://doi.org/10.1117/12.269013
Event: Optical Telescopes of Today and Tomorrow, 1996, Landskrona/Hven, Sweden

Abstract

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.

Citation Download Citation

Stephen M. Pompea "Calibration screen issues for high-performance astronomical telescope systems", Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); https://doi.org/10.1117/12.269013

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