NASA/Goddard Space Flight Center, Code 219, Greenbelt, MD 20771

T -- HIGH RESOLUTION SATELLITE IMAGERY SOL 971-19559-902 DUE 021299 POC Deborah A. Bittner, Contract Specialist, Phone (301) 614-5609, Fax (301) 614-5619, Email Deborah.A.Bittner.1@gsfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/GSFC/date.html#971-19559-902. E-MAIL: Deborah A. Bittner, Deborah.A.Bittner.1@gsfc.nasa.gov. THIS NOTICE CONSTITUTES AMENDMENT NO. 2 TO THE COMBINED SYNOPSIS/RFQ FOR High Resolution Satellite Imagery. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to provide additional specifications. The due date for receipt of offers is not extended. The research requires imagery that has a radiometric quantization that is equivalent to the original panchormatic SPOT imagery (equivalent sensor quantization and gains, equivalent radiometric response). Note that the areas to be imaged are snow surfaces with subtle changes in surface slope, that can only be detected by sensors with a high radiometric sensitivity (equivalent to SPOT with high gain settings). Imagery that does not have sufficient radiometric sensitivity, and/or saturates over these areas, will not be acceptable. The spatial coverage must also match the original SPOT scenes (swath width at least 60 km, or greater than 60 km where the original SPOT imagery was off-nadir, and 60 km along swath). The eight locations to be imaged are centered on: (1) 82.87 S Lat. 172.50 W Long. (decimal degrees) (2) 83.37 S Lat. 165.50 W Long. (3) 83.15 S Lat. 172.50 W Long. (4) 82.95 S Lat. 162.40 W Long. (5) 83.60 S Lat. 161.60 W Long. (6) 83.75 S Lat. 166.10 W Long. (7) 84.29 S Lat. 158.30 W Long. (8) 84.56 S Lat. 148.00 W Long. Cloud cover must be no greater than 10% for imagery to be acceptable. Time Frame: Initial acquisition attemtps of each area must begiin before the end of February 1999, as the solar elevation in these areas will be too low after this. If some initial acquisitions do not meet cloud cover specifications, additional attempts can be made in October and November 1999 and January and February 2000. The WWW address or URL of the NASA/GSFC Business Opportunities home page is http://procurement.nasa.gov/EPS/GSFC/class.html. Posted 02/01/99 (D-SN293288). (0032)

Loren Data Corp. http://www.ld.com (SYN# 0122 19990203\T-0001.SOL)