Infrared Imaging Data Reduction Software and Techniques

Details Infrared Imaging Data Reduction Software and Techniques Infrared Imaging Data Reduction Software and Techniques

2001-01-11

arxiv.org/abs/astro-ph/0101181v1

Astronomy and Astrophysics

Astrophysics

to appear in Astronomical Data Analysis and Software Systems X, ASP Conference

Scientific paper

We describe the InfraRed Data Reduction (IRDR) software package, a small ANSI C library of fast image processing routines for automated pipeline reduction of infrared (dithered) observations. We developed the software to satisfy certain design requirements not met in existing packages (e.g., full weight map handling) and to optimize the software for large data sets (non-interactive tasks that are CPU and disk efficient). The software includes stand-alone C programs for tasks such as running sky frame subtraction with object masking, image registration and coaddition with weight maps, dither offset measurement using cross-correlation, and object mask dilation. Although we currently use the software to process data taken with CIRSI (a near-IR mosaic imager), the software is modular and concise and should be easy to adapt/reuse for other work. IRDR is available from anonymous ftp to ftp.ast.cam.ac.uk in pub/sabbey.

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