The optomechanical design of Amon-Ra instrument

Hanshin Lee; Ian Tosh; Nigel Morris; Mike Lockwood; Sug-Whan Kim

doi:10.1117/12.573624

10 February 2005 The optomechanical design of Amon-Ra instrument

Hanshin Lee, Ian Tosh, Nigel Morris, Mike Lockwood, Sug-Whan Kim

Proceedings Volume 5638, Optical Design and Testing II; (2005) https://doi.org/10.1117/12.573624
Event: Photonics Asia, 2004, Beijing, China

Abstract

The EARTH-Sun-Heliosphere INteractions Experiment (EARTHSHINE) is a novel space mission designed to answer key questions about how Earth's climate and space environment are influenced by the Sun. One of the four EARTHSHINE instruments called Amon-Ra is a unique Earth reflectance monitor and is a combination of two detectors; one imaging the photon fluxes over the visible wavelength range and the other bolo-metrically measuring global emissions while the satellite orbits about the L1 Lagrange point. Both detectors view both the whole Sun and whole Earth. In order to minimise the differential degradation of front-end optics and detectors, the measurements of the Sun and Earth light are designed to be performed using as many common components of instrument as possible. As the ratio of the radiance emitted from the Sun to Earth's albedo is nearly a factor of 300,000:1, the optics for the Sun channel has to incorporate a smaller aperture and an attenuator. The instrument enclosure is designed to fit into a compact volume including electronics, all mounting feet, connectors, and fixings so that it is expected to make the entire satellite structure compact and cost-effective, whilst meeting the scientific measurement specifications. The optomechanical design we have developed for Amon-Ra is presented in this paper.

Citation Download Citation

Hanshin Lee, Ian Tosh, Nigel Morris, Mike Lockwood, and Sug-Whan Kim "The optomechanical design of Amon-Ra instrument", Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); https://doi.org/10.1117/12.573624

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