NSSDCA ID: 2009-031B-09
Mission Name: Lunar Crater Observation and Sensing Satellite (LCROSS)The LCROSS Near Infrared Spectrometer 2 (NSP2), or solar-viewer or occultation NSP, is one of two NSPs with identical electronics units but different fore-optics systems and view directions. NSP2 is looking perpendicular (-Z spacecraft direction) to the view of the other instruments on LCROSS, and is designed to take NIR emission reflectance spectrometry of the vapor plume and ejecta cloud resulting from the Centaur impact, measure the grain properties, and measure broad water features, and use an occultation viewer to measure water vapor absorption by cloud particles. The instrument consists of a diffuser fore-optics package with an unattenuated, approximately 130 degree field of view. A 145 cm long, 600-micron core diameter low OH glass optical fiber (NA=0.22+/-0.02) feeds a spectrometer consisting of a single thermoelectrically cooled InGaAs sensor element which creates a 1-D spectrum. Spectral coverage is 1.2 - 2.4 microns with a nominal resolution of 0.035 microns.
Questions and comments about this experiment can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Anthony Colaprete | Principal Investigator | NASA Ames Research Center | Anthony.Colaprete-1@nasa.gov |