Selecting pixels for Kepler downlink

Stephen T. Bryson, Jon M. Jenkins, Todd C. Klaus, Miles T. Cote, Elisa V. Quintana, Jennifer R. Hall, Khadeejah Ibrahim, Hema Chandrasekaran, Douglas A. Caldwell, Jeffrey E. Van Cleve, Michael R. Haas, Nicole M. Radziwill (+1 others)
2010 Software and Cyberinfrastructure for Astronomy  
The Kepler mission monitors > 100, 000 stellar targets using 42 2200 × 1024 pixel CCDs. Bandwidth constraints prevent the downlink of all 96 million pixels per 30-minute cadence, so the Kepler spacecraft downlinks a specified collection of pixels for each target. These pixels are selected by considering the object brightness, background and the signal-to-noise of each pixel, and are optimized to maximize the signal-to-noise ratio of the target. This paper describes pixel selection, creation of
more » ... ction, creation of spacecraft apertures that efficiently capture selected pixels, and aperture assignment to a target. Diagnostic apertures, short-cadence targets and custom specified shapes are discussed.
doi:10.1117/12.857625 fatcat:qhjvygxkkzcx3k4i6u5v4fky4u