RELAB Users Manual and Instructions:
-PDF format
-Word format

RELAB Publications:
-by author
-by date

-RELAB spectral database
-Related data collections

-Modified Gaussian Model (MGM) software

Spectroscopic data acquired in the laboratory provide the interpretive foundation upon which compositional information about unexplored or unsampled planetary surfaces is derived from remotely obtained reflectance spectra. The NASA RELAB is supported by NASA as a multi-user spectroscopy facility, and laboratory time can be made available at no charge to investigators who are in funded NASA programs.

RELAB has two operational spectrometers available to NASA scientists:
1) a near-ultraviolet, visible, and near-infrared bidirectional spectrometer and
2) a near- and mid- infrared FT-IR spectrometer.

The overall purpose of the design and operation of the RELAB bidirectional spectrometer is to obtain high precision, high spectral resolution, bidirectional reflectance spectra of earth and planetary materials. One of the key elements of its design is the ability to measure samples using viewing geometries specified by the user. This allows investigators to simulate the geometry of natural observing conditions for particulate samples as small as 50 mg.

Use and scheduling of the RELAB is monitored by a 4-member advisory committee. NASA investigators should direct inquiries to the Science Manager ( or RELAB Operator (

Brown University, Lincoln Field Building; Box 1846 (324 Brook St. for parcels) Providence, RI 02912; Fax: 401-863-3978