Dynamic analyses of the proposed habitable exoplanet astrophysics facility

J. Brent Knight; H. Philip Stahl; Thomas Brooks

doi:10.1117/12.2530385

11 September 2019 Dynamic analyses of the proposed habitable exoplanet astrophysics facility

J. Brent Knight, H. Philip Stahl, Thomas Brooks

Proceedings Volume 11103, Optical Modeling and System Alignment; 111030F (2019) https://doi.org/10.1117/12.2530385
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The proposed Habitable Exoplanet (HabEx) astrophysics facility is one of four large such facilities being proposed to the 2020 decadal. It is a large telescope that is sensitive to ultraviolet, optical, and near-infrared photons. The proposed design’s overall length is on the order of 17.2 m and its maximum cross section is on the order of 5.25 × 5.25 m. The primary mirror is 4 m in diameter. A transient dynamic analysis was performed to estimate the order of magnitude of ring down time after moving the telescope and pointing at a new target for science planning purposes. Without uncertainty factors, results from a simple re-pointing maneuver indicate that primary to secondary mirror LOS errors are on the order of 10^-4 pico-m after 5 minutes. Also, a frequency response analysis was performed to predict the impact of planned micro-thruster vibrations on required stability. Based on provided noise level associated with the micro-thrusters and loading assumptions and without uncertainty factors, the assessed vibrations do not impact predicted performance requirements.

Conference Presentation

Citation Download Citation

J. Brent Knight, H. Philip Stahl, and Thomas Brooks "Dynamic analyses of the proposed habitable exoplanet astrophysics facility", Proc. SPIE 11103, Optical Modeling and System Alignment, 111030F (11 September 2019); https://doi.org/10.1117/12.2530385

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