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PDS Geosciences Node, Washington University in St. Louis
Geosciences Node Data
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Mars Analog Soil BUG Observations

This data set contains bidirectional reflectance distribution function (BRDF) measurements of 5 Mars soil analogs (AREF_235, AREF_236, AREF_237, AREF_238, and JSC_Mars1). The measurements were acquired by the Bloomsburg University Goniometer (BUG) at Mars Exploration Rover (MER) Panoramic Camera (Pancam) wavelengths (450-990 nm) using the Pancam flight spare filters. The data were provided by Michael Shepard, Bloomsburg University, and archived by the PDS Geosciences Node.


Archive Contents

Root Directory - Start here for access to the entire volume. 

AAREADME.TXT - Introduction to the BUG archive. Read this first.
VOLDESC.CAT - Description of the volume contents as a PDS catalog object.

INDEX Directory - The INDEX directory contains a PDS index file for this archive. An index file is an ASCII table with each record (or line) in the table containing information about a single data product in archive. See the file INDXINFO.TXT for additional details.

  • INDEX.TAB - A list of all data files in the archive. Use this file to browse the data. This file is described by the label INDEX.LBL.

DATA Directory - Within the DATA directory, the data are organized within 5 folders, corresponding to the 5 soil samples analyzed. Within each of the 5 folders are tabular data files containing the BRDF results for each of the MER Pancam wavelengths. Each data product is accompanied by a detached PDS label. The data are further described in DATAINFO.TXT.

AREF_235, AREF_236, AREF_237, AREF_238, JSC_MARS1

CATALOG Directory - Files in the CATALOG directory are text files containing documentation formatted in PDS object description language. The files contain information about the BUG instrument and laboratory, the data set, references, and
personnel involved in archiving the data. The contents of this directory are described in CATINFO.TXT.

EXTRAS  Directory - The EXTRAS directory contains ancillary material that may be useful but is not required for the understanding of the archive. The contents of this directory are described in EXTRINFO.TXT.


GEOMETRY Directory - The GEOMETRY directory contains files needed to describe the observation geometry for the data in the archive. Geometry information and directory contents are described in GEOMINFO.TXT.


PDS Nodes PDS Atmospheres Geosciences Imaging NAIF PPI Rings Small Bodies
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Curator: Jennifer Ward
NASA Official: Paul Byrne
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