Generalized SCIDAR measurements at La Silla Observatory

T. Sadibekova; J. Vernin; M. Sarazin; M. Le Louarn

doi:10.1117/12.671594

23 June 2006 Generalized SCIDAR measurements at La Silla Observatory

T. Sadibekova, J. Vernin, M. Sarazin, M. Le Louarn

Proceedings Volume 6267, Ground-based and Airborne Telescopes; 62671P (2006) https://doi.org/10.1117/12.671594
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

Abstract

We present the results of vertical profiles of refractive index structure constant C_n²(h) measurements made at the 1-m telescope, La Silla Observatory (ESO,Chile) using the generalized SCIDAR technique. Observations took place during July, August, November, 2002 and February 2003. The instrumentation, computer interface and a preliminary reduction software were provided by the Imperial College (London) scientific group. We describe the SCIDAR image processing technique and two inverting methods. The first, proposed by the Imperial College group, is based on the Tikhonov regularization and the second, on use at Nice University, is based on maximum entropy. Performances of both methods agree well. The profile integrals are compared to simultaneous DIMM seeing measurements made at La Silla Observatory.

Citation Download Citation

T. Sadibekova, J. Vernin, M. Sarazin, and M. Le Louarn "Generalized SCIDAR measurements at La Silla Observatory", Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62671P (23 June 2006); https://doi.org/10.1117/12.671594

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