Physics – Optics
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apopt..39.5415z&link_type=abstract
Applied Optics LP, vol. 39, Issue 30, pp.5415-5425
Physics
Optics
39
Scientific paper
An instrument named the grating scale monitor for measuring the outer scale 0 from the angle-of-arrival (AA) fluctuations of a perturbed wave front was developed a few years ago at Nice University. The AA is detected with a 5-ms time resolution by modulation of the stellar image in a small telescope with a grating. One uses the normalized covariance of AA fluctuations to estimate 0 . A new version of this instrument, the generalized seeing monitor (GSM) is described. It consists of four identical modules for measuring the AA at four locations on the wave front. A spatiotemporal analysis of these data leads to the determination of seeing 0 , outer scale 0 , and the wave-front speed. In addition, isoplanatic angle 0 is determined from scintillation, making the characterization of turbulence with the GSM almost complete. We describe the instrument and make a detailed analysis of its performance and accuracy. Several site-testing campaigns have been conducted with the GSM: at La Silla (Chile), Ouka meden (Morocco), Maidanak (Uzbekistan), and Cerro Pachon and Cerro Paranal (Chile). The main results of these campaigns are presented and discussed.
Borgnino Julien
Conan Rodolphe
Martin Francois
Tokovinin Andrei
Ziad Aziz
No associations
LandOfFree
From the Grating Scale Monitor to the Generalized Seeing Monitor does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with From the Grating Scale Monitor to the Generalized Seeing Monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and From the Grating Scale Monitor to the Generalized Seeing Monitor will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1769141