Spectral features due to on-board diffusers

Hedser van Brug; Gregory Bazalgette Courreges-Lacoste; Jos Groote Schaarsberg; Gerard Otter; Umberto Del Bello; Bart Snijders

doi:10.1117/12.616324

22 August 2005 Spectral features due to on-board diffusers

Hedser van Brug, Gregory Bazalgette Courreges-Lacoste, Jos Groote Schaarsberg, Gerard Otter, Umberto Del Bello, Bart Snijders

Author Affiliations +

Proceedings Volume 5882, Earth Observing Systems X; 588202 (2005) https://doi.org/10.1117/12.616324
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The presence of structures, as observed in real spectral data from earth observing satellites, that are due to the on-board diffusers are discussed. The structures are shown to be caused by the speckles in the entrance slit of the spectrometer, created by the diffusers. A dedicated setup for the study of these spectral features will be presented together with results on different types of diffusers, i.e. surface diffusers and volume diffusers. Finally, methods to reduce the amplitude of the spectral features will be presented. It will be shown that QVD (quasi volume diffuser) and Spectralon (a volume diffuser) are far better in reducing the unwanted spectral features than an aluminum surface diffuser. Overall it can be stated that QVD is the "best" diffuser where the validity of this statement depends on the type of its use.

Citation Download Citation

Hedser van Brug, Gregory Bazalgette Courreges-Lacoste, Jos Groote Schaarsberg, Gerard Otter, Umberto Del Bello, and Bart Snijders "Spectral features due to on-board diffusers", Proc. SPIE 5882, Earth Observing Systems X, 588202 (22 August 2005); https://doi.org/10.1117/12.616324

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