Turbulence monitoring at Calern observatory with the generalized differential image motion monitor

Eric Aristidi; Yan Fantéï-Caujolle; Aziz Ziad; Julien Chabé; Christophe Giordano; Catherine Renaud; Alohotsy Rafalimanana

doi:10.1117/12.2560650

13 December 2020 Turbulence monitoring at Calern observatory with the generalized differential image motion monitor

Eric Aristidi, Yan Fantéï-Caujolle, Aziz Ziad, Julien Chabé, Christophe Giordano, Catherine Renaud, Alohotsy Rafalimanana

Author Affiliations +

Proceedings Volume 11448, Adaptive Optics Systems VII; 114487K (2020) https://doi.org/10.1117/12.2560650
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The Generalised Differential Image Motion Monitor (GDIMM) was proposed a few years ago as a new generation instrument for turbulence monitoring. It measures integrated parameters of the optical turbulence, i.e the seeing, isoplanatic angle, scintillation index, coherence time and wavefront coherence outer scale. GDIMM is based on a fully automatic small telescope (28cm diameter), equipped with a 3-holes mask at its entrance pupil. The instrument is installed at the Calern observatory (France) and performs continuous night-time monitoring of turbulence parameters. In this communication we present long-term and seasonnal statistics obtained at Calern, and combine GDIMM data to provide quantities such as the equivalent turbulence altitude and the effective wind speed.

Citation Download Citation

Eric Aristidi, Yan Fantéï-Caujolle, Aziz Ziad, Julien Chabé, Christophe Giordano, Catherine Renaud, and Alohotsy Rafalimanana "Turbulence monitoring at Calern observatory with the generalized differential image motion monitor", Proc. SPIE 11448, Adaptive Optics Systems VII, 114487K (13 December 2020); https://doi.org/10.1117/12.2560650

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available