Dr. Gabriel J. Soto Profile

Dr. Gabriel J. Soto

SPIE Involvement:

Author

Publications (8)

SPIE Journal Paper | 8 March 2022 Open Access

Minimal differential lateral acceleration configurations for starshade stationkeeping in exoplanet direct imaging

Jackson Kulik, Gabriel Soto, Dmitry Savransky

JATIS, Vol. 8, Issue 01, 017003, (March 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.017003

KEYWORDS: Telescopes, Stars, Exoplanets, Tolerancing, Sun, Optical spheres, Space operations, Satellites, Numerical analysis, Numerical integration

Read Abstract +

DOWNLOAD PAPER

SPIE Journal Paper | 11 January 2021 Open Access

Analytical model for starshade formation flying with applications to exoplanet direct imaging observation scheduling

Gabriel Soto, Dmitry Savransky, Rhonda Morgan

JATIS, Vol. 7, Issue 02, 021209, (January 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.2.021209

KEYWORDS: Stars, Telescopes, Sun, Motion models, Exoplanets, Computer simulations, Device simulation, Kinematics, Tolerancing, Solar system

Read Abstract +

DOWNLOAD PAPER

SPIE Journal Paper | 8 April 2020 Open Access

Optimal scheduling of exoplanet direct imaging single-visit observations of a blind search survey

Dean Keithly, Dmitry Savransky, Daniel Garrett, Christian Delacroix, Gabriel Soto

JATIS, Vol. 6, Issue 02, 027001, (April 2020) https://doi.org/10.1117/12.10.1117/1.JATIS.6.2.027001

KEYWORDS: Planets, Stars, Exoplanets, Monte Carlo methods, Observatories, Signal to noise ratio, Telescopes, Sun, Target detection, Space operations

Read Abstract +

We present an algorithm, effective over a broad range of planet populations and instruments, for optimizing integration times of an exoplanet direct imaging observation schedule, to maximize the number of unique exoplanet detections under realistic mission constraints. Our planning process uses “completeness” as a reward metric and the nonlinear combination of optimal integration time per target and constant overhead time per target as a cost metric constrained by a total mission time. We validate our planned target list and integration times for a specific telescope by running a Monte Carlo of full mission simulations using EXOSIMS, a code base for simulating telescope survey missions. These simulations encapsulate dynamic details such as time-varying local zodiacal light for each star, planet keep-out regions, exoplanet positions, and strict enforcement of observatory use over time. We test our methods on the Wide-Field Infrared Survey Telescope (WFIRST) coronagraphic instrument (CGI). We find that planet, Sun, and solar panel keep-out regions limit some target per-annum visibility to <28 % and that the mean local zodiacal light flux for optimally scheduled observations is 22.79 mag arcsec − 2. Both these values are more pessimistic than previous approximations and impact the simulated mission yield. We find that the WFIRST CGI detects 5.48 ± 0.17 and 16.26 ± 0.51 exoplanets, on average, when observing two different planet populations based on Kepler Q1-Q6 data and the full Kepler data release, respectively. Optimizing our planned observations using completeness derived from the more pessimistic planet population (in terms of overall planet occurrence rates) results in a more robust yield than optimization based on the more optimistic planet population. We also find optimization based on the more pessimistic population results in more small planet detections than optimization with the more optimistic population.

DOWNLOAD PAPER

Proceedings Article | 16 September 2019 Presentation + Paper

Standard exoplanet yield evaluation for the LUVOIR and HabEx concept studies

Rhonda Morgan, Dmitry Savransky, Michael Turmon, Bertrand Mennesson, Eric Mamajek, Stuart Shaklan, Gabriel Soto, Karl Stapelfeldt, Walker Dula, Dean Keithly

Proceedings Volume 11117, 1111701 (2019) https://doi.org/10.1117/12.2530668

KEYWORDS: Exoplanets, Monte Carlo methods, Planets, Coronagraphy, Stars

Read Abstract +

Proceedings Article | 9 September 2019 Presentation + Paper

Optical design of a modular segmented space telescope

Jacob Shapiro, Dean Keithly, Gabriel Soto, Dmitry Savransky, Erik Gustafson

Proceedings Volume 11116, 111160D (2019) https://doi.org/10.1117/12.2529816

KEYWORDS: Mirrors, Telescopes, Point spread functions, Space telescopes, Zemax, Optical instrument design, Optical design, Wavefronts

Read Abstract +

Proceedings Article | 6 July 2018 Paper

Optimal starshade observation scheduling

Gabriel Soto, Dean Keithly, Daniel Garrett, Christian Delacroix, Dmitry Savransky

Proceedings Volume 10698, 106984M (2018) https://doi.org/10.1117/12.2311771

KEYWORDS: Space telescopes, Telescopes, Exoplanets, Computer simulations, Solar system, Imaging systems, Orbital dynamics

Read Abstract +

Proceedings Article | 1 September 2017 Paper

Starshade orbital maneuver study for WFIRST

Gabriel Soto, Amlan Sinha, Dmitry Savransky, Christian Delacroix, Daniel Garrett

Proceedings Volume 10400, 104001U (2017) https://doi.org/10.1117/12.2273568

KEYWORDS: Exoplanets, Space operations, Stars, Infrared telescopes, Space telescopes, Telescopes, Imaging systems, Mechanics, Spaceflight missions, Orbital dynamics

Read Abstract +

Proceedings Article | 1 September 2017 Paper

Optimization of high-inclination orbits using planetary flybys for a zodiacal light-imaging mission

Gabriel Soto, James Lloyd, Dmitry Savransky, Keith Grogan, Amlan Sinha

Proceedings Volume 10400, 104001X (2017) https://doi.org/10.1117/12.2274069

KEYWORDS: Exoplanets, Solar system, Algorithm development, Mechanics, Light, Light scattering, Pollution control, Space operations, Cameras, Detection and tracking algorithms

Read Abstract +

Showing 5 of 8 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years