A Fast Technique for the Creation of Large-Scale High-Resolution IRAS (HIRES) Beam-matched Images

Preprint

22 March 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0103356

Abstract

HIRES processing provides a significant improvement in both resolution and image quality over previous IRAS image products, but the characteristics of the HIRES beam make accurate comparisons between the various IRAS bandpasses and between HIRES data and data at other wavelengths non-trivial. We present a new, fast technique for the construction of HIRES beam-matched images that is especially well suited for the creation of large-scale (several square degrees) ratio maps. Other techniques for the construction of ratio maps are discussed and compared with the new algorithm. Examples of the large-scale ratio maps that can be constructed using this new technique are presented. The algorithm's application to the construction of multiwavelength difference images and multi-colour images is also demonstrated.

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All Related Versions

Version 1, 2001-03-22, ArXiv
Published version: Publications of the Astronomical Society of the Pacific, 113 (785), 872.

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