AWAIC: A WISE Astronomical Image Co-adder

Simple item page
dc.creatorMasci, Frank J.
dc.creatorFowler, John W.
dc.date2008-12-22
dc.date.accessioned2026-07-07T12:21:20Z
dc.date.available2026-07-07T12:21:20Z
dc.descriptionWe describe a new image co-addition tool, AWAIC, to support the creation of a digital Image Atlas from the multiple frame exposures acquired with the Wide-field Infrared Survey Explorer (WISE). AWAIC includes preparatory steps such as frame background matching and outlier detection using robust frame-stack statistics. Frame co-addition is based on using the detector's Point Response Function (PRF) as an interpolation kernel. This kernel reduces the impact of prior-masked pixels; enables the creation of an optimal matched filtered product for point source detection; and most important, it allows for resolution enhancement (HiRes) to yield a model of the sky that is consistent with the observations to within measurement error. The HiRes functionality allows for non-isoplanatic PRFs, prior noise-variance weighting, uncertainty estimation, and includes a ringing-suppression algorithm. AWAIC also supports the popular overlap-area weighted interpolation method, and is generic enough for use on any astronomical image data that supports the FITS and WCS standards.
dc.description16 pages, 6 figures. Invited paper to appear in Proceedings of ADASS XVIII Conference
dc.identifierhttps://arxiv.org/abs/0812.4310
dc.identifierhttp://arxiv.org/abs/0812.4310
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213332
dc.subjectAstrophysics
dc.titleAWAIC: A WISE Astronomical Image Co-adder
dc.typetext

Files

Collections

arXiv