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arXiv · 1410.8416

Map-making for large-format detector arrays on CCAT

Gaelen Marsden·Tim Jenness·Douglas Scott
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Abstract

CCAT is a large submillimetre telescope to be built near the ALMA site in northern Chile. A large-format KID camera, with up to 48,000 detectors at a single waveband sampled at about 1 kHz, will have a data rate about 50 times larger than SCUBA-2, the largest existing submillimetre camera. Creating a map from this volume of data will be a challenge, both in terms of memory and processing time required. We investigate how to extend SMURF, the iterative map-maker used for reducing SCUBA-2 observations, to a distributed-node parallel system, and estimate how the processing time scales with the number of nodes in the system.

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Gaelen Marsden, Tim Jenness, Douglas Scott. 2014-10-30. Map-making for large-format detector arrays on CCAT. https://arxiv.org/abs/1410.8416

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