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Observing Exoplanets with SOFIA
Krabbe, A.; Angerhausen, D.; Iserlohe, C.
In this article we present an analysis of possible science cases for NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) in the field of extrasolar planet detection and characterization. Advantages of SOFIA and its instruments for exoplanet observations are illustrated and possible targets are introduced. Possible future instrumentatio…
Noise and Bias In Square-Root Compression Schemes
Rhodes, Jason; Bernstein, Gary M.; Bebek, Chris +3 more
We investigate data compression schemes for proposed all-sky diffraction-limited visible/NIR sky surveys aimed at the dark-energy problem. We show that lossy square-root compression to 1 bit pixel-1 of noise, followed by standard lossless compression algorithms, reduces the images to 2.5-4 bits pixel-1, depending primarily up…
What Bandwidth Do I Need for My Image?
Hogg, David W.; Price-Whelan, Adrian M.
Computer representations of real numbers are necessarily discrete, with some finite resolution, discreteness, quantization, or minimum representable difference. We perform astrometric and photometric measurements on stars and co-add multiple observations of faint sources to demonstrate that essentially all of the scientific information in an optic…