From: IN%"jeg320@mail.usask.ca" "James E Giesbrecht" 8-NOV-1996 23:36:42.26 To: IN%"STEELE@DANSAS.USASK.CA" CC: Subj: Proposal contribution. Return-path: Received: from mail.usask.ca (mail.usask.ca) by DANSAS.USASK.CA (PMDF V5.0-6 #15020) id <01IBMDIN9DJK000LL6@DANSAS.USASK.CA> for STEELE@DANSAS.USASK.CA; Fri, 08 Nov 1996 23:36:40 +0000 (GMT) Received: from elec03 (elec03.usask.ca) by mail.usask.ca (PMDF V5.0-5 #Fri, 8 Nov 1996 17:36 -0600 (CST) Date: Fri, 08 Nov 1996 17:36:37 -0600 From: James E Giesbrecht Subject: Proposal contribution. X-Sender: jeg320@mail.usask.ca To: STEELE@DANSAS.USASK.CA Message-id: <1.5.4.16.19961108233637.1ca71d40@mail.usask.ca> MIME-version: 1.0 X-Mailer: Windows Eudora Light Version 1.5.4 (16) Content-type: text/plain; charset="us-ascii" Content-transfer-encoding: 7BIT Hi, The text for sections 2.1.2, 2.2, 2.3, 3.1.4.3, and 3.1.5 is below. I've filled in the sections as best I know how, so let me know if there are any points I should add or remove. James 2.1.2 Image Intensifiers and CCD Arrays The equipment to create spectrographic images includes an image intensifier and a charge-coupled device (CCD). The image intensifier, which is lens-coupled to the CCD, will strengthen the dim starlight so that it can be adequately detected by the CCD. Spectral images captured by the CCD will be used to determine properties of ozone above the earth. Science-Tech, a Canadian company, can provide an intensified CCD (ICCD) for $28000 (Can). K-Space Associates Ltd. can supply a CCD for $3500 (US). Electrophysics Corp. will provide an intensifier for $4000 - $5000 (US). 2.2 Video Sensor for Attitude Determination and Wavelength Calibration A video camera is needed so that the viewing direction of the instrument can be determined and so that wavelength calibration can be performed. The video camera will be set at a known angle with respect to the spectroscopy optics. Star images that the camera produces will be correlated with a star database so that the viewing direction of the spectrographic equipment can be computed. The estimated cost for the video hardware is $3000 (US). Possible suppliers are Hamamatsu and Panasonic. Note: the video sensor may no longer be needed. 2.3 Global Positioning System A Global Positioning System (GPS) device is required to track the position of the instrument as it goes up and as it comes down. Positiion of the payload must be known for two reasons: 1) so that a measurment taken by the instrument can be associated with a specific position above the earth; and 2) so that the payload can be recovered. Constaints imposed by the US government on suppliers of GPS hardware can be overcome with differential GPS equipment. However, since the NITEOWL project does not permit a communication uplink to the payload ordinary differential GPS devices will not be suitable. Instead, inverted differential GPS hardware will be used. Inverted differential GPS hardware requires a standard GPS receiver in the payload, a communication downlink from the payload, and a base station. This type of GPS equipment will estimate the position of the payload within 1m. The cost of the hardware will be approximately $10000 - $20000 (US). A possible supplier is Trimble Navigation. 3.1.4.3 Intensifiers Electrophysics Corp. has an image intensifier with the following optical characteristics: Input Image Size: 18mm diameter Output Image Size: 18mm diameter Resolution: >=36 lp/mm Gain: 10000 Spectral Response: 400nm to 850nm Sensitivity: Higher near the infrared end of spectrum The price for this intensifier is $4000 - $5000 (US). 3.1.5 CCD The CCD provided by K-Space Associates Inc is the K400CC5 High- Resolution, High-Sensitivity, Pelteir Cooled Black&White CCD. The cost for this detector is $3500 (US). Specifications that affect image quality are as follows: Potential Well Depth: 100,000 electrons Pixel Resolution: 768(H) X 493(V) Pixel Size: 11 microns X 13 microns Sensing Area: 8.8mm X 6.6mm Spectral Range: 400nm - 1100 nm without IR filter Signal to Noise Ratio: 56 dB Sensitivity: 0.5 lux at f1.4 without IR filter Exposure Time: 1/30 sec to 5 min. ***************************************************************************** "My name is Bond -- James Bond and you'd better tell me the whereabouts of Ernst Stavrow Blofeld!" ***************************************************************************** James E. Giesbrecht, M.Sc., P.Eng. Department of Electrical Engineering E-mail: jeg320@mail.usask.ca 57 Campus Drive General Office Tel: (306) 966-5379 University of Saskatchewan General Office Fax: (306) 966-5407 Saskatoon, Saskatchewan Canada, S7N 5A9