Stellar coronagraph performance impact due to particulate contamination and scatter

Kunjithapatham Balasubramanian; Stuart Shaklan; Amir Give'on

doi:10.1117/12.825182

25 August 2009 Stellar coronagraph performance impact due to particulate contamination and scatter

Kunjithapatham Balasubramanian, Stuart Shaklan, Amir Give'on

Proceedings Volume 7440, Techniques and Instrumentation for Detection of Exoplanets IV; 74400T (2009) https://doi.org/10.1117/12.825182
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

The detection and characterization of earth-like exo-planets with space coronagraph instruments could be adversely affected by contamination of the many optical surfaces from the telescope primary mirror to the coronagraph mask. Particulate contamination that may accumulate even in clean room conditions over the period of integration, testing, and launch can cause performance degradation due to both coherent and incoherent scatter. While the coherent components can be compensated in broad-band light using a sequential deformable mirror architecture, incoherent scatter would remain. We show the challenges and effects of particulate contamination based on measurements and estimates, and discuss the requirements throughout the coronagraph system while accounting for the wavefront control system.

Citation Download Citation

Kunjithapatham Balasubramanian, Stuart Shaklan, and Amir Give'on "Stellar coronagraph performance impact due to particulate contamination and scatter", Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400T (25 August 2009); https://doi.org/10.1117/12.825182

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