Accounting for the anisoplanatic point spread function in deep wide-field adaptive optics images

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Accounting for the anisoplanatic point spread function in deep wide - field adaptive optics images ⋆

In this paper we present the approach we have used to determine and account for the anisoplanatic point spread function (PSF) in deep adaptive optics (AO) images for the Survey of a Wide Area with NACO (SWAN) at the ESO VLT. The survey comprises adaptive optics observations in the Ks band totaling ∼ 30 arcmin , assembled from 42 discrete fields centered on different bright stars suitable for AO...

متن کامل

The Anisoplanatic Point-Spread Function in Adaptive Optics

The effects of anisoplanatism on the adaptive optics point-spread function are investigated. A model is derived that combines observations of the guide star with an analytic formulation of anisoplanatism in order to generate predictions for the adaptive optics point-spread function at arbitrary locations within the field of view. The analytic formulation captures the dependencies of anisoplanat...

متن کامل

New algorithms for adaptive optics point-spread function reconstruction

Context. The knowledge of the point-spread function compensated by adaptive optics is of prime importance in several image restoration techniques such as deconvolution and astrometric/photometric algorithms. Wavefront-related data from the adaptive optics realtime computer can be used to accurately estimate the point-spread function in adaptive optics observations. The only point-spread functio...

متن کامل

Constraining the Adaptive Optics Point-Spread Function in Crowded Fields: Measuring Photometric Aperture Corrections

The point-spread function (PSF) of an adaptive optics (AO) system is often poorly known. This ignorance can lead to significant systematic errors. Since the degree of AO correction is sensitive to the observing conditions: seeing, wind speed, brightness of the wavefront reference, etc., it would be desirable to estimate the PSF from the data themselves rather than from observations of a PSF sta...

متن کامل

Ground-Conjugate Wide Field Adaptive Optics for the ELTs

Ground-conjugate wide eld AO is presented and preliminary performance results are given, which show that signi cant seeing improvement can be achieved over 10-20 arcmin eld of view. A proposal for an ELT AO system is sketched.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Astronomy & Astrophysics

سال: 2005

ISSN: 0004-6361,1432-0746

DOI: 10.1051/0004-6361:20052890