TY - GEN
T1 - Lunar scintillometer to validate GLAO turbulence distribution measurements
AU - Newman, Kevin
AU - Hart, Michael
AU - Bendek, Eduardo
AU - Bustos, Edison
PY - 2012
Y1 - 2012
N2 - A lunar scintillometer, LuSci, is an inexpensive and robust instrument which deploys a linear array of photodiodes pointed toward the moon to measure scintillation produced by atmospheric turbulence. Covariances between the signals from the photodiodes are analyzed to derive estimates of the turbulence profile within a few hundred meters above the ground. Instrument parameters and phase of the moon are taken into account. This method has been used for site testing and monitoring. We present the development of a new LuSci instrument used to validate the ground-layer turbulence distribution measured from the laser wavefront sensor signals of the Ground Layer Adaptive Optics system at the MMT. The near-simultaneous measurements are used to characterize the performance of the GLAO system. We describe the instrument, its operation, approaches to data reduction, and use in performance characterization of a GLAO system.
AB - A lunar scintillometer, LuSci, is an inexpensive and robust instrument which deploys a linear array of photodiodes pointed toward the moon to measure scintillation produced by atmospheric turbulence. Covariances between the signals from the photodiodes are analyzed to derive estimates of the turbulence profile within a few hundred meters above the ground. Instrument parameters and phase of the moon are taken into account. This method has been used for site testing and monitoring. We present the development of a new LuSci instrument used to validate the ground-layer turbulence distribution measured from the laser wavefront sensor signals of the Ground Layer Adaptive Optics system at the MMT. The near-simultaneous measurements are used to characterize the performance of the GLAO system. We describe the instrument, its operation, approaches to data reduction, and use in performance characterization of a GLAO system.
KW - Ground layer adaptive optics
KW - Lunar scintillometer
UR - http://www.scopus.com/inward/record.url?scp=84871790924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871790924&partnerID=8YFLogxK
U2 - 10.1117/12.927127
DO - 10.1117/12.927127
M3 - Conference contribution
AN - SCOPUS:84871790924
SN - 9780819491480
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Adaptive Optics Systems III
T2 - Adaptive Optics Systems III
Y2 - 1 July 2012 through 6 July 2012
ER -