Seeing studies on a 1.8-m mirror

Lawrence D. Barr; John Fox; Gary A. Poczulp; Claude A. Roddier

doi:10.1117/12.19220

1 July 1990 Seeing studies on a 1.8-m mirror

Lawrence D. Barr, John Fox, Gary A. Poczulp, Claude A. Roddier

Proceedings Volume 1236, Advanced Technology Optical Telescopes IV; (1990) https://doi.org/10.1117/12.19220
Event: SPIE Astronomical Telescopes and Instrumentation for the 21st Century, 1990, Tucson, AZ, United States

Abstract

Interferograms of the front surface of a zenith-pointing 1.8 m mirror for a range of surface-to-air temperature differences were analyzed using two different methods to show that significant mirror seeing effects do not occur in the range of + or - 0.5 C, and may be acceptably small up to + or - 1 C. Mirror seeing was shown to comply with Kolmolgorov turbulence laws up to limits that are apparently due to the test setup enclosure. Small seeing effects were discernible despite much larger image error sources.

Citation Download Citation

Lawrence D. Barr, John Fox, Gary A. Poczulp, and Claude A. Roddier "Seeing studies on a 1.8-m mirror", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); https://doi.org/10.1117/12.19220

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