HR: 17:30h
AN: SH54A-07    [Abstracts]
TI: The Lyman-Alpha Mapping Project (LAMP)
AU: Stern, A
EM: astern@boulder.swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: * Gladstone, R
EM: rgladstone@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Retherford, K
EM: kretherford@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Black, R
EM: rkblack@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Scherrer, J
EM: jscherrer@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Slater, D
EM: dslater@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Stone, J
EM: jstone@swri.edu
AF: Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 United States
AU: Feldman, P
EM: pdf@pha.jhu.edu
AF: The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 United States
AU: Crider, D
EM: dcrider@lepvax.gsfc.nasa.gov
AF: Catholic University of America, 106 Driftwood Drive, Gibsonville, NC 27249 United States
AB: LAMP is a UV spectrograph investigation recently proposed for the LRO mission. Its three main objectives are to (i) identify and localize exposed water frost in permanently shadowed regions (PSRs), (ii) characterize landforms and albedos in PSRs, and (iii) demonstrate the feasibility of using natural starlight and sky-glow illumination for future lunar surface mission applications. A supplemental objective is to assay the lunar atmosphere and its variability. The LAMP spectrograph will accomplish these objectives by measuring the signal reflected from the nightside lunar surface and PSRs using the interplanetary HI Ly$\alpha$ sky-glow and FUV starlight as light sources. Both these light sources provide fairly uniform, but faint, illumination (e.g., the reflected Lya signal is expected to be ~$\sim10$~R). Thanks to LAMP's sensitivity, however, by the end of the nominal 1-year mission the SNR for a Ly$\alpha$ albedo map will be $>100$/km$^2$ in the polar regions, allowing the characterization of subtle compositional and structural features. LAMP is based on the flight-proven ALICE series of spectrographs that are flying on Rosetta and built for New Horizons.
DE: 5462 Polar regions
DE: 5494 Instruments and techniques
DE: 6250 Moon (1221)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting