Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, Massachusetts 02138-1516

99 -- CONCAVE ZERODUR MIRROR SOL RFQ-BF1609 DUE 110598 POC Rena Cerbone, TEL. (617)495-7445, FAX (617)495-7485, email address: rcerbone@cfa.harvard.edu The Smithsonian Astrophysical Observatory (SAO) requires the fabrication of a concave Zerodur mirror to be used in a large optical spectrograph. The mirror is spherical, 23.1 inches in diameter and has an edge thickness of 2.93 inches. The focal length of the mirror is 54.0 inches. The required surface accuracy of the mirror is lambda/8 and surface cosmetics are scratch-dig 40-20 or better. Quotes must include a summary that documents that each specification in the drawing has been met. The measurement accuracy of each test shall be sufficient in each case so that if measurement error is added to the test result, the SAO specifications are still met. Measurement error shall be indicated. SAO specifies that maximum allowable error in two cases: 1) measurements of the radii of curvature of the optical surface shall be accurate to 0.01% of the target value or better and 2) measurements of the diameters of the elements shall be accurate to 0.001% inch or better. Quoters shall describe all metrology that will be used to verify compliance with these specifications, including surface roughness and surface accuracy. This solicitation is unrestricted. (The applicable SIC code is 3827, size standard of 500 employees.) All responsible qualifying sources may submit a quotation, which will be considered. Such quotations must be supported by information to enable SAO to evaluate offer's capability to provide this item. Quoters may request solicitation package via fax to Rena Cerbone at 617-495-7485 or mail to Smithsonian Astrophysical Observatory, 60 Garden Street, M/S 22, Cambridge, Massachusetts 02138-1516 Attn: Rena Cerbone. Delivery is eight (8) months after receipt of order. Quotations will be evaluated as follows: 1) evidence of technical expertise and infrastructure to fabricate large optic to SAO's technical specification, 2) Contractor's prior experience and past performance with optics of comparable size and tolerance perimeters; 3) price, and 4) delivery schedule. This acquisition is being conducted under theguidelines as set forth in the Simplified Acquistion Procedures (SAP). Posted 09/30/98 (I-SN256499). (0273)

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