AMDC: de-biasing AMBER visibilities for limiting magnitude sources

G. Li Causi; S. Antoniucci; E. Tatulli

doi:10.1117/12.786917

28 July 2008 AMDC: de-biasing AMBER visibilities for limiting magnitude sources

G. Li Causi, S. Antoniucci, E. Tatulli

Proceedings Volume 7013, Optical and Infrared Interferometry; 701348 (2008) https://doi.org/10.1117/12.786917
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The AMBER instrument, the three beams interferometric combiner of the VLTI, occasionally su.ers from a fringing artifact, called "correlated noise", likely induced by electromagnetic radio frequencies present in the lab. We analyze how this noise affects the extracted visibilities, becoming more important for fainter sources. This unwanted effect can cause an overestimate of the instrumental V² for low flux observations. We have developed a software tool, called "AMBER Detector Cleaner" (AMDC), which successfully removes this artifact and we present here the method on which it is based and some example results. Such software is made available to the community, so that AMBER users can perform optimal data reduction even for faint sources.

Citation Download Citation

G. Li Causi, S. Antoniucci, and E. Tatulli "AMDC: de-biasing AMBER visibilities for limiting magnitude sources", Proc. SPIE 7013, Optical and Infrared Interferometry, 701348 (28 July 2008); https://doi.org/10.1117/12.786917

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