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Outer Scale Monitoring


Measurement of the Wavefront Outer Scale at La Silla

28 August-18 Septembre 1997, ( GSM , Nice University, )

Time series compared to seeing and isoplanatic angle.

Median values on the whole mission for the following parameters:
Outer Scale (m) : 24.8 ± 19.3
Seeing Angle (arcsec) : 1.70 ± 0.47
Isoplanatic Patch (arcsec) : 1.26 ± 0.42

Publications regarding the Grating Scale Monitor (GSM)

F. Martin, A. Tokovinine, A. Agabi, J. Borgnino, A. Ziad; GSM, a grating scale monitor for atmospheric turbulence measurements ; Astron. Astrophys. Suppl. Ser. 108, 173-180 (1994) Full Refereed Scanned Article (PDF)
A. Tokovinine, A. Ziad, F. Martin, R. Avila, J. Borgnino, R. Conan, M. Sarazin; Wavefront Outer Scale Monitoring at La Silla ; SPIE Vol. 3353, Adaptive Optical System Technologies, Kona, Hawaii (USA), 20-28 March 1998.
F. Martin, A. Tokovinine, A. Ziad, R. Conan, J. Borgnino, R. Avila, A. Agabi, M. Sarazin First statistical data on wavefront outer scale at La Silla observatory from the GSM instrument ; Astron. Astrophys. 336, L49-L52 (1998). Full Refereed Scanned Article (PDF)

The GSM Picture Book at La Silla, Sep. 1997.

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