From MAILER-DAEMON Fri Oct 28 16:10:57 2005 Date: 28 Oct 2005 16:10:57 +1000 From: Mail System Internal Data Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA X-IMAP: 1130479857 0000000000 Status: RO This text is part of the internal format of your mail folder, and is not a real message. It is created automatically by the mail system software. If deleted, important folder data will be lost, and it will be re-created with the data reset to initial values. From wayne@gravitec.co.nz Fri Oct 28 15:32:54 2005 Return-Path: Received: from asclepius.uwa.edu.au (asclepius3.uwa.edu.au [130.95.128.60]) by suphys.physics.usyd.edu.au (8.12.11/8.12.11) with ESMTP id j9S5Wk4X000494 for ; Fri, 28 Oct 2005 15:32:52 +1000 (EST) (envelope-from wayne@gravitec.co.nz) Received: from asclepius.kas (localhost.localdomain [127.0.0.1]) by asclepius.uwa.edu.au (Postfix) with SMTP id 61F7C183722 for ; Fri, 28 Oct 2005 13:32:37 +0800 (WST) Received: from asclepius (localhost.localdomain [127.0.0.1]) by asclepius.prekas (Postfix) with SMTP id 48669183727 for ; Fri, 28 Oct 2005 13:32:37 +0800 (WST) Received: from [130.95.118.85] (unknown [130.95.118.85]) by asclepius.input (Postfix) with ESMTP id 263EC183722 for ; Fri, 28 Oct 2005 13:32:36 +0800 (WST) Message-ID: <4361B85F.7040208@gravitec.co.nz> Date: Fri, 28 Oct 2005 13:34:23 +0800 From: Wayne McRae User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: ncss@physics.usyd.edu.au Subject: Gravitec's magnetic and gravity sensors Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms010108070309040706010107" X-SpamTest-Info: Profile: Formal (275/051025) X-SpamTest-Info: Profile: Detect Hard [UCS 290904] X-SpamTest-Info: Profile: SysLog X-SpamTest-Info: Profile: Marking Spam - Subject (UCS) [02-08-04] X-SpamTest-Status: Not detected X-SpamTest-Version: SMTP-Filter Version 2.0.0 [0125], KAS/Release X-PMX-Version: 4.7.1.128075, Antispam-Engine: 2.1.0.0, Antispam-Data: 2005.10.27.43 X-PerlMx-Spam: Gauge=IIIIIII, Probability=7%, Report='__BAT_BOUNDARY 0, __CT 0, __CTYPE_HAS_BOUNDARY 0, __CTYPE_MULTIPART 0, __HAS_MSGID 0, __MIME_VERSION 0, __SANE_MSGID 0, __USER_AGENT 0' Content-Length: 7514 Status: R X-Status: X-Keywords: This is a cryptographically signed message in MIME format. --------------ms010108070309040706010107 Content-Type: multipart/mixed; boundary="------------000100000304080804020208" This is a multi-part message in MIME format. --------------000100000304080804020208 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Dear Dr Cairns, I represent Gravitec Instruments, a research and development company currently based at the University of Western Australia specialising in the development of sensors for mineral surveying in airborne and borehole environments. We're nearing completion of two core technologies that might be of interest to space research. We have a string based magnetic sensor that directly measures the local magnetic gradient tensors (Txz, Tzx, Tyz, Tyz, Txy and Txy) and is completely immune to the local uniform magentic field. The sensor currently has measurement sensitivity of 0.1nT/m flat response over DC-1Hz. This would improve by 2-3 orders of magntiude when developed for a space based platform offering much higher resolution signal measurements and a wider measurement bandwidth. We also have a ribbon based gravity gradient sensor that directly measures the gradient tensors (Gxz, Gzx, Gyz, Gzy, Gxy, Gyx) and is capable of 5Eotvos sensitivity at room temperature. The gravity gradiometer is immune to the local uniform gravitational field and would be capable of significant improvement in sensitivity (again 2-3 orderes of magnitude) on a space based platform. Both sensors are cheap to produce, lightweight (ideal for space research), capable of operation at low power, simple in design and robust, and would have better sensitivity than anything currently available. Possible applications for the sensors include: Mineral mapping of astroids (space probe based), moons and planets (rover based) Measurement of changes from uniformity of the Earth's magnetic and gravitational fields and the Moon's gravitational field Measurement of magnetic remanents in the Moon Solar wind magnetic field measurements We'd like to be updated on the progress of the Decadal Plan for Space Science and would like to discuss space deployment of our sensors when the plan has progressed further. Best regards, -Dr Wayne McRae --------------000100000304080804020208 Content-Type: text/x-vcard; charset=utf-8; name="wayne.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="wayne.vcf" begin:vcard fn:Wayne McRae n:McRae;Wayne org:Gravitec Instruments Ltd adr:Crawley;;35 Stirling Highway;Perth;WA;6009;Australia email;internet:wayne@gravitec.co.nz title:Research Scientist tel;work:+61 (08) 6488 1826 tel;fax:+61 (08) 6488 1159 tel;home:+61 (08) 6380 2679 tel;cell:+61 (0)140 122 529 url:http://www.gravitec.co.nz/ version:2.1 end:vcard --------------000100000304080804020208-- --------------ms010108070309040706010107 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIII9TCC AtUwggI+oAMCAQICAw+l9zANBgkqhkiG9w0BAQQFADBiMQswCQYDVQQGEwJaQTElMCMGA1UE 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