The effects of atmospheric calibration errors on source model parameters

Christopher Tycner; D. J. Hutter; R. T. Zavala

doi:10.1117/12.857345

21 July 2010 The effects of atmospheric calibration errors on source model parameters

Christopher Tycner, D. J. Hutter, R. T. Zavala

Proceedings Volume 7734, Optical and Infrared Interferometry II; 773439 (2010) https://doi.org/10.1117/12.857345
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Optical long-baseline interferometric data is commonly calibrated with respect to an external calibrator, which is either an unresolved source or a star with a known angular diameter. A typical observational strategy involves acquiring data in a sequence of calibrator-target pairs, where the observation of each source is obtained separately. Therefore, the atmospheric variations that have time scales shorter than the cadence between the target-calibrator pairs are not always fully removed from the data even after calibration. This results in calibrated observations of a target star that contain unknown quantities of residual atmospheric variations. We describe how Monte Carlo simulations can be used to assess quantitatively the impact of atmospheric variations on fitted model parameters, such as angular diameters of uniform-disk models representing semi- and fully-resolved single stars.

Citation Download Citation

Christopher Tycner, D. J. Hutter, and R. T. Zavala "The effects of atmospheric calibration errors on source model parameters", Proc. SPIE 7734, Optical and Infrared Interferometry II, 773439 (21 July 2010); https://doi.org/10.1117/12.857345

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