IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph (Conference Presentation)

Navtej Saini; Kevin Anderson; Zensheu Chang; Gary Gutt; Bijan Nemati

doi:10.1117/12.2274260

18 October 2017 IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph (Conference Presentation)

Navtej Saini, Kevin Anderson, Zensheu Chang, Gary Gutt, Bijan Nemati

Proceedings Volume 10400, Techniques and Instrumentation for Detection of Exoplanets VIII; 1040008 (2017) https://doi.org/10.1117/12.2274260
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

We have developed an automated software pipeline to perform Structural-Thermal-Optical Performance (STOP) analysis of the WFIRST coronagraph. The Coronagraph Instrument on the Wide Field InfraRed Survey Telescope (WFIRST) will search for exoplanets by controlling the diffraction of the host star light in order to suppress it and allow the planet light to become observable. Since the planet light is billions of times dimmer than the star light, precise control of the light is challenging and susceptible to even minute imperfections such as thermally induced deformations of the optics. The observatory STOP analysis is used to assess the impact of such perturbations. The pipeline integrates the thermal, structural, and optical analysis software to run a STOP analysis in a seamless manner, with the final output being optical wave-front errors for an input observational scenario. The pipeline is written in the Python high level language and uses the Luigi framework for dependency resolution, workload management, and visualization. The initial version uses Thermal Desktop for thermal analysis, NX NASTRAN for structural analysis, SigFit for optical surface fitting, and CODE V for optical analysis. The pipeline can be easily customized using configuration files and provides users with a web interface to monitor the submitted job. This paper will present results showing how the pipeline can be used to simulate different observational scenarios to generate optical wave-front errors. Which in turn are propagated through simulated WFIRST coronagraph optical system to generate realistic speckle patterns.

Conference Presentation

Citation Download Citation

Navtej Saini, Kevin Anderson, Zensheu Chang, Gary Gutt, and Bijan Nemati "IMPipeline: an integrated STOP modeling pipeline for the WFIRST coronagraph (Conference Presentation)", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 1040008 (18 October 2017); https://doi.org/10.1117/12.2274260

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available