PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
Future large-scale exoplanet direct-imaging missions will be capable of discovering and confirming Earth-Like exoplanets. The community has traditionally used the fraction of planets occurring within the visible limits of a telescope to evaluate these telescope designs. However, using only the instrument's geometric constraints and assuming a limiting planet magnitude ignores integration time requirements and can lead to overly optimistic performance predictions. In this paper, we present a new method for evaluating the fraction of observable planets that accounts for integration time. We also provide analytical methods for calculating the planet-star separation extrema for any given planet and analytical methods describing the true anomaly values at which a planet has a given planet-star separation. This new completeness calculation method explains some of the differences in the HabEx final report between EXOSIMS exoplanet yield numbers and completeness based yield estimates and attributes them to the lacking capabilities of current completeness based telescope performance evaluations. Our methods demonstrate that traditional completeness methods used in the final report and other exoplanet yield estimates overestimate yield between 32% and 141% compared to integration time adjusted completeness depending on the instrument capabilities and target.
Dean Keithly andDmitry Savransky
"Integration time adjusted completeness", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 1144324 (13 December 2020); https://doi.org/10.1117/12.2562636
ACCESS THE FULL ARTICLE
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
The alert did not successfully save. Please try again later.
Dean Keithly, Dmitry Savransky, "Integration time adjusted completeness," Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 1144324 (13 December 2020); https://doi.org/10.1117/12.2562636