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Montage: An Astronomical Image Mosaic Service for the NVO

Laity, Anastasia Clower and Anagnostou, Nate and Berriman, G. Bruce and Good, John C. and Jacob, Joseph C. and Katz, Daniel S. and Prince, Thomas A. (2005) Montage: An Astronomical Image Mosaic Service for the NVO. In: Astronomical Data Analysis Software and Systems XIV. ASP Conference Series. No.347. Astronomical Society of the Pacific , San Francisco, CA, pp. 34-38. ISBN 1-58381-215-6

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Montage is a software system for generating astronomical image mosaics according to user-specified size, rotation, WCS-compliant projection and coordinate system, with background modeling and rectification capabilities. Its architecture has been described in the proceedings of ADASS XII and XIII (Berriman et al. 2003, 2004). It has been designed as a toolkit, with independent modules for image reprojection, background rectification and co-addition, and will run on workstations, clusters and grids. The primary limitation of Montage thus far has been in the projection algorithm. It uses a spherical trigonometry approach that is general at the expense of speed. The reprojection algorithm has now been made 30 times faster for commonly used tangent plane to tangent plane reprojections that cover up to several square degrees, through modification of a custom algorithm first derived for the Spitzer Space Telescope. This focus session will describe this algorithm, demonstrate the generation of mosaics in real time, and describe applications of the software. In particular, we will highlight one case study which shows how Montage is supporting the generation of science-grade mosaics of images measured with the Infrared Array Camera aboard the Spitzer Space Telescope.

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Additional Information:© 2005 Astronomical Society of the Pacific. Montage is funded by NASA's Earth Science Technology Office, Computational Technnologies Project, under Cooperative Agreement Number NCC5-626 between NASA and the California Institute of Technology.
Group:Space Radiation Laboratory
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Record Number:CaltechAUTHORS:20110810-134016075
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24787
Deposited By: Tony Diaz
Deposited On:12 Sep 2011 16:09
Last Modified:22 Dec 2014 01:24

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