Stray light control for asteroid detection at low solar elongation for the NEOSSat micro-satellite telescope

Victor Isbrucker; John Stauder; Denis Laurin; Allan Hollinger

doi:10.1117/12.925488

21 September 2012 Stray light control for asteroid detection at low solar elongation for the NEOSSat micro-satellite telescope

Victor Isbrucker, John Stauder, Denis Laurin, Allan Hollinger

Author Affiliations +

Proceedings Volume 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave; 84424J (2012) https://doi.org/10.1117/12.925488
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

The Near Earth Object Surveillance Satellite (NEOSSat) is a small satellite dedicated to finding near Earth asteroids. Its surveying strategy consists of imaging areas of the sky to low solar elongation, while in a sun synchronous polar orbit (dawn-dusk). A high performance baffle will control stray light mainly due to Earth shine. Observation scenarios require solar shielding down to 45 degree solar elongation over a wide range of ecliptic latitudes. In order to detect the faintest objects (approx 20^th v mag) given a 15 cm telescope and CCD detection system, background from stray light is a critical operational concern. The required attenuation is in the order of 10^-12. The requirement was verified by analyses; testing was not attempted because the level of attenuation is difficult to measure reliably. We report consistent results of stray light optical modelling from two independent analyses. Launch is expected for late 2012.

Citation Download Citation

Victor Isbrucker, John Stauder, Denis Laurin, and Allan Hollinger "Stray light control for asteroid detection at low solar elongation for the NEOSSat micro-satellite telescope", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84424J (21 September 2012); https://doi.org/10.1117/12.925488

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