Flight Integral Field Spectrograph (IFS) optical design for WFIRST coronagraphic exoplanet demonstration (Conference Presentation)

Qian Gong; Tyler Groff; Avi Mandell; Michael McElwain; Maxime Rizzo; Prabal Saxena

doi:10.1117/12.2273064

19 September 2017 Flight Integral Field Spectrograph (IFS) optical design for WFIRST coronagraphic exoplanet demonstration (Conference Presentation)

Qian Gong, Tyler Groff, Avi Mandell, Michael McElwain, Maxime Rizzo, Prabal Saxena

Author Affiliations +

Proceedings Volume 10400, Techniques and Instrumentation for Detection of Exoplanets VIII; 104000A (2017) https://doi.org/10.1117/12.2273064
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Based on the experience from Prototype Imaging Spectrograph for Coronagraphic Exoplanet Studies (PISCES) for WFIRST, we have moved to the flight instrument design phase. The flight instrument is similar to PISCES, but there are important changes to its design as our requirements have evolved. Beginning with the science and system requirements, we discuss a number of critical trade-offs. Most significantly there are trades in the type of IFS, lenslet array shape and layout, detector sampling, and accommodating the larger Field Of View (FOV) and wider wavelength band for a potential Starshade. Finally, the traditional geometric optical design is also investigated and traded. We compare a reflective versus refractive design, and the telecentricity of the relay. The relay before the lenslet array controls the chief angle distribution on the lenslet array. Our previous paper1 has addressed how the relay design combined with lenslet array/pinhole mask can further suppress the residual star light and increase the contrast. Highlighting all of these design trades, we present the phase A IFS optical design for the WFIRST coronagraph instrument.

Conference Presentation

Citation Download Citation

Qian Gong, Tyler Groff, Avi Mandell, Michael McElwain, Maxime Rizzo, and Prabal Saxena "Flight Integral Field Spectrograph (IFS) optical design for WFIRST coronagraphic exoplanet demonstration (Conference Presentation)", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000A (19 September 2017); https://doi.org/10.1117/12.2273064

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Exoplanets

Iterated function systems

Optical design

Relays

Spectrographs

Control systems

Lens design

Show All Keywords

Keywords/Phrases

Search In:

Publication Years