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Paper: Challenges in Data Analysis of Spitzer Exoplanet Observations
Volume: 485, Astronomical Data Analysis Software and Systems XXIII
Page: 407
Authors: Carey, S.; Ingalls, J.; Grillmair, C.; Krick, J.
Abstract: Spitzer is NASA's premier mission for the characterization of exoplanets. Spitzer's unique capabilities include its ability to obtain long, continuous observations (hours to days); its very stable photometry - demonstrated at 30 ppm (per epoch; 1-sigma); and its wavelength coverage which allows it to sample thermal emission from hot exoplanet atmospheres and constrain important chemical constituents with strong spectral features in the 3 – 5 micron window. Extracting high-precision photometry from the data is complicated by sources of correlated noise which must be trended from the data. The Spitzer operations team has identified and implemented several low cost, low risk methods of mitigating correlated noise in high-precision staring mode observations. These improvements include the precise mapping of the intra-pixel gain via repeated observations of a standard star on the same portion of a pixel until the photometric noise has been reduced through co-addition. The resulting gain maps will enable reduction of staring mode data without trending photometric variations from the science data themselves.
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