WE ARE DEVELOPING OPEN-SOURCE SOFTWARE TO SIMULTANEOUSLY MODEL ATMOSPHERIC TELLURIC FEATURES AND STELLAR SPECTRA TO LEARN BOTH WITHOUT THE USE OF MODELS. HERE WE PROPOSE TO EXTEND THIS METHOD TO INCLUDE MODELING OF THE ABSORPTION FROM THE IODINE CELL. THE BEST SOURCE OF CALIBRATION OF THIS PARTICULAR CELL WILL BE THE THOUSANDS OF OBSERVATIONS OF THIS CELL ITSELF THROUGH SCIENCE OBSERVATIONS. AT EACH EPOCH EACH OBSERVED STELLAR SPECTRUM CONSISTS OF A LARGELY UNCHANGING STAR A TIME-VARIABLE TELLURIC SPECTRUM AND AN UNCHANGING GAS CELL. WE CAN MODEL EACH OF THESE COMPONENTS SIMULTANEOUSLY LEARNING THE MAXIMUM LIKELIHOOD TRUE STELLAR SPECTRUM TELLURIC MODEL AND GAS CELL MODEL AT EACH EPOCH CONDITIONED ON ALL OTHER OBSERVATIONS FROM THIS INSTRUMENT. THIS MODEL IS NON-PARAMETRIC AND WILL NOT RELY ON A BUILT MODEL OF THE IODINE CELL OR ASSUMPTIONS OF HOW TELLURIC FEATURES MAY APPEAR.

University Of Chicago, Chicago IL

Investigators