66 -- REFLECTIVE OPTICAL SYSTEM FOR A THERMAL SPECTRAL IMAGER.

Notice Date

January 9, 2001

Contracting Office

NASA/Goddard Space Flight Center, Code 216, Greenbelt, MD 20771

ZIP Code

20771

Solicitation Number

693-81109

Response Due

January 30, 2001

Point of Contact

Jeanne V. Moschetti, Contract Specialist, Phone (301) 286-3227, Fax (301) 286-1773, Email jmoschet@pop100.gsfc.nasa.gov

E-Mail Address

Jeanne V. Moschetti (jmoschet@pop100.gsfc.nasa.gov)

Description

NASA/GSFC plans to issue a Request for Quote (RFQ) for a reflective optical system for a thermal spectral imager. This imager is being developed at GSFC. The only section being bid is the front-end optical system. Note that the front-end optical system is envisioned as a separate assembly that will be integrated to the cryogenic dewar containing the QWIP array, but the front-end optics will not be cooled to cryogenic temperatures. Focusing mechanisms must be included in the design, but shimming is an acceptable mechanism. The proposed instrument must cover a broad spectral range (3 to 15.4 um). Therefore, fully reflective optics will be baselined for the instrument telescope. The instrument will have a single pixel geometric resolution of 700u radian, corresponding to a MODIS-like spatial resolution of 500 meters for a 700km orbit and an AVIRIS-like spatial resolution of 14 meters for a 20km aircraft altitude. Diffraction will lower the true spatial resolution at the longer wavelengths. The QWIP array has 23 um pixels yielding a focal length of 3.3cm. Because there are 640 pixels in the across-track direction, the full instrumental field of view will be 0.448 radian or 25.7 degrees. A f/5 beam will provide sufficient signal over the entire spectral range, while still allowing spectral resolving powers of several hundred. The effective single pixel input aperture will be abount 1 cm. At 3um the diffraction spot will be about half a pixel, while at 15um it will be about three pixels (limiting the overall spatial resolution at 15um to about 2.1 milliradian). The telescope will use a three-mirror telecentric design similar to the Advanced Land Imager (ALI) optics of EO-1. The spectrum will be formed by placing a wedged filter in the focal plane directly over the array. The telecentric design will limit the off-axis spectral shift of the imager. As subassemblies are built we will integrate them into a custom dewar to house the cryocooler, QWIP array, LVE and optics. All interface harnessing will be defined and constructed and the display console configured for operational simplicity. This includes, for example, system responsivity, spectral and spatial response, system noise, optical throughout, image quality, operating temperature, frame rates, integration times, as well as, portability, ease of operation ruggedness, weight, etc. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). The Government does not intend to acquire a commercial item using FAR Part 12. See Note 26. The DPAS Rating for this procurement is DO C9. The anticipated release date of RFQ 693-81109 is on or about 2/01/01 with an anticipated quote due date of on or about 2/12/01. All qualified responsible sources may submit a quote which shall be considered by the agency. An ombudsman has been appointed -- See NASA Specific Note "B". The solicitation and any documents related to this procurement will be available over the Internet. These documents will be in Microsoft Office 97 format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/GSFC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=C&pin=51 Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor the Internet site for the release of the solicitation and amendments (if any). Potential quoters will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html

Web Link

Click here for the latest information about this notice (http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=51#693-81109)

Record

Loren Data Corp. 20010111/66SOL003.HTM (D-009 SN50A4P4)