Simulations with the maria code indicate that a large-field-of-view single-dish telescope at AtLAST can map the full solar disk in under a minute with appropriately sized detector arrays, and in seconds with arrays above 100,000 elements.
The Relative Performance of Filled and Feedhorn-Coupled Focal-plane Architectures
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abstract
Modern far infrared and submillimeter instruments require large format arrays. We consider the relative performance of filled array (bare pixel) and feedhorn-coupled architectures for bolometer focal planes. Based on typical array parameters, we quantify the relative observing speeds and comment on the merits of the different architectures. Filled arrays can provide higher mapping speed (by a factor of up to 3.5) and simpler observing modes at the expense of reduced sensitivity for pointed observations, increased detector numbers, and greater vulnerability to stray light and electromagnetic interference. Taking advantage of the filled array architecture requires strongly background limited detectors. At millimeter wavelengths, filled arrays must be surrounded by a sufficiently cold enclosure to minimize the background power from the instrument itself.
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Observing the Sun with the Atacama Large Aperture Submillimeter Telescope (AtLAST): Forecasting Full-disk Observations
Simulations with the maria code indicate that a large-field-of-view single-dish telescope at AtLAST can map the full solar disk in under a minute with appropriately sized detector arrays, and in seconds with arrays above 100,000 elements.