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

99 -- TWO CODE 7980 FUSED SILICA LENS BLANKS SOL RFQ-BF1407 DUE 092998 POC Priscilla O. Waltner, TEL. (617) 495-7401, FAX (617) 496-7957, email: pwaltner@cfa.harvard.edu The Smithsonian Astrophysical Observatory intends to purchase on a sole source basis, two each (2) Code 7980, Grade 5F fused silica lens blanks from Corning Incorporated. The size of Lens 1 is 28.400 inches x 3.300 inches. The second Lens size is 27.300 inches x 5.400 inches. The tolerance of all dimensions is to be +0.15/-0.00. No subsurface damage resulting from generation is to extend into the volume of glass as defined by the sizes listed above. Surface is to 60 grit or better on all surfaces. All responsible sources may submit a quotation which will be considered. A determination by SAO not to compete this proposed purchase order based upon responses to this notice is solely within the discretion of SAO. Information received will normally be considered solely for the purpose of determining whether to conduct a competitive procurement. This acquisition is being conducted under guidelines set forth in FAR, Part 13, Simplified Acquisition Procedures. No written solicitation will be issued for this requirement. Anticipated award date is 30 September 1998. Posted 09/17/98 (I-SN251102). (0260)

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