Loren Data's SAM Daily™

FBO DAILY ISSUE OF JULY 01, 2006 FBO #1678
MODIFICATION

66 -- Scientific Camera

Notice Date

6/29/2006
 

Notice Type

Modification
 

NAICS

334516 — Analytical Laboratory Instrument Manufacturing
 

Contracting Office

Department of Commerce, National Institute of Standards and Technology (NIST), Acquisition Management Division, 100 Bureau Drive, Building 301, Room B129, Mail Stop 1640, Gaithersburg, MD, 20899-1640
 

ZIP Code

20899-1640
 

Solicitation Number

SB1341-06-Q-0485
 

Response Due

7/12/2006
 

Archive Date

7/27/2006
 

Point of Contact

Jennifer Roderick, Contract Specialist, Phone 301-975-8173, Fax 301-975-8884, - Todd Hill, Contracting Officer, Phone 301-975-8802,
 

E-Mail Address

Jennifer.Roderick@nist.gov, todd.hill@nist.gov
 

Description

The purpose of this amendment is to respond to questions from industry regarding clarifications of the requirements as follows: 1) Shutter: The solicitation states: "Camera must include an integrated shutter, or be compatible with an industry standard shutter" QUESTION: There are many different industry shutters with a variety of fixturing and attachment methods. In addition, the type of shutter supplied depends upon the performance level required; that performance includes extinction, opening and closing time, minimum and maximum exposure time, duty cycle, and clear aperture. ANSWER: The shutter shall provide perfect extinction, and open and close in less than 5 ms. The duty cycle of the shutter shall match the rate at which the camera can acquire and readout images. The clear aperture shall be the smallest aperture that does not block the field of view of the CCD. If a shutter is not integrated into the camera, then the camera supplier shall provide the specific shutter model and manufacturer that both fulfills the requirements specified, and is compatible with the camera. Moreover any shutter not provided will add cost, which shall be included in overall "value" of the bid. 2) Frame Transfer. The solicitation states: "require a "frame transfer" camera which allow for 2 images within 2 ms." QUESTION: Does this mean that the camera must be ready to initiate an image within 2 ms of the end of the integration period of the previous image Does the camera only have to meet this for two images, i.e. in a 'burst' mode? ANSWER: The camera needs to be triggerable twice in 2 ms. I.e., if the integration time is 50 us (typical) then NIST will expose for 50 us, transfer the frame to the masked region of the CCD and expose again 2 ms later. Then each frame will be readout in a typical 300 ms, before any more images would be requested. 3) Noise. The solicitation states: " CCD readout noise - require a readout noise at or below 5 electrons. System readout noise - at or below 10 electrons." QUESTION: Readout noise is a function of readout rate. Is there a readout rate or time that is required Total system noise includes dark noise, which is a function of exposure time, readout time and camera temperature. Is there a typical exposure time that may be assumed to allow us to calculate dark noise? ANSWER: A readout rate of 1 MHz on a 512x512 CCD is acceptable. Faster is better, within the noise requirements. The typical exposure time will be 50-500 microseconds. Dark current will doubtless be irrelevant. 4) Kinetics mode. The solicitation states: ?Strongest consideration will be given to the Offeror whose quote can provide devices that can support kinetics mode in addition to frame transfer." QUESTION: What is meant by 'kinetics mode'? ANSWER: If only a fraction of the CCD is illuminated (for example, 10 pixels), then kinetics mode shall be the ability to integrate for some time, then shuffle the image down by those 10 rows (typically in 10s of microseconds), expose again (the initial 10 pixels would be in the dark), and etc, until the whole CCD is filled with a series of "strips" of data. This is commonly used to image the time dependence of an object on a very rapid time scale. 10 pixels are intended as an example, not a requirement. All other terms and conditions remain the same.
 

Place of Performance

Address: 100 Bureau Drive, Shipping & Receiving, Building 301, Gaithersburg, Maryland

Zip Code: 20899-0001

Country: USA
 

Record

SN01080047-W 20060701/060629220425 (fbodaily.com)
 

Source

FedBizOpps Link to This Notice
(may not be valid after Archive Date)

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