The GRAVITY fringe tracker: correlation between optical path residuals and atmospheric parameters

S. Lacour; R. Dembet; R. Abuter; P. Fedou; G. Perrin; F. Eisenhauer; K. Perraut; C. Straubmeier; W. Brandner; A. Amorim

doi:10.1117/12.2313004

9 July 2018 The GRAVITY fringe tracker: correlation between optical path residuals and atmospheric parameters

S. Lacour, R. Dembet, R. Abuter, P. Fedou, G. Perrin, F. Eisenhauer, K. Perraut, C. Straubmeier, W. Brandner, A. Amorim

Proceedings Volume 10701, Optical and Infrared Interferometry and Imaging VI; 1070107 (2018) https://doi.org/10.1117/12.2313004
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

After the first year of observations with the GRAVITY fringe tracker, we compute correlations between the optical path residuals and atmospheric and astronomical parameters. The median residuals of the optical path residuals are 180nm on the ATs and 270nm on the UTs. The residuals are uncorrelated with the target magnitudes for Kmag below 5.5 on ATs (9 on UTs). The correlation with the coherence time is however extremely clear, with a drop-off in fringe tracking performance below 3 ms.

Conference Presentation

Citation Download Citation

S. Lacour, R. Dembet, R. Abuter, P. Fedou, G. Perrin, F. Eisenhauer, K. Perraut, C. Straubmeier, W. Brandner, and A. Amorim "The GRAVITY fringe tracker: correlation between optical path residuals and atmospheric parameters", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 1070107 (9 July 2018); https://doi.org/10.1117/12.2313004

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