<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal style='margin-bottom:6.0pt'><b><span style='font-family:"Arial",sans-serif'>Arecibo Call for Proposals (ISR Observations): </span></b><b><span style='font-family:"Arial",sans-serif'>Thursday, September 1, 2016 Deadline</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Dear Colleagues</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>(Please distribute this call to any colleagues who might be interested)</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>We extend an invitation for proposals for the use of the 430MHz Incoherent Scatter Radar with a deadline for September 1, 2016 (</span><span style='font-family:"Arial",sans-serif'>17:00 AST, 21:00 UTC</span><span style='font-family:"Arial",sans-serif'>). These petitions should be for the usage of the Incoherent Scatter Radar, as well for the passive and active optical instruments. </span><span style='font-family:"Arial",sans-serif'>These requests should be for radar usage within the six-month (or in some cases one-year) beginning January 1, 2017. </span><span style='font-family:"Arial",sans-serif'>Once the request is submitted and accepted, the same would be valid for </span><span style='font-family:"Arial",sans-serif'>six-month (or a year depending on the request)</span><span style='font-family:"Arial",sans-serif'>, after which it will need to be re-submitted to maintain validity. </span><i><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>This call does <strong>NOT</strong> include proposals for use of the HF Facility for ionospheric modification</span></i><span style='font-size:12.0pt;font-family:"Times New Roman",serif'>.</span><span style='font-family:"Arial",sans-serif'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Information about observing proposals and policies can be found at </span><u><span style='font-family:"Arial",sans-serif;color:blue'>http://www.naic.edu/~astro/proposals/proposal.shtml</span></u><span style='font-family:"Arial",sans-serif'>. Proposals must be submitted using the web-based cover form, which can be found online at <u><span style='color:blue'>http://www.naic.edu/~astro/proposals/aoprop.php</span></u>. For this deadline we have enabled direct uploading of the PDF containing the main body of your proposal via the proposal website. If you do not upload your PDF, you should send it by separate email to </span><span style='font-family:"Arial",sans-serif;color:blue'>proposal@naic.edu</span><span style='font-family:"Arial",sans-serif'>.</span><span style='font-size:12.0pt'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Technical information about our facilities and instrumentation as well as the contacts for specific support are found below. For any further information not addressed in this communication you can contact Christiano Brum (</span><span style='font-family:"Arial",sans-serif;color:blue'>cbrum@naic.edu</span><span style='font-family:"Arial",sans-serif'>).</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>We hope to obtain your proposals real soon and continue to do outstanding research during the upcoming year as we have done in the past.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Sincerely,</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Christiano Brum</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><u><span style='font-size:12.0pt;font-family:"Arial",sans-serif'>Technical information.</span></u></b><u><span style='font-size:12.0pt'><o:p></o:p></span></u></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif'>The 430 MHz Incoherent Scatter Radar.</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>The 430 MHz Incoherent Scatter Radar (ISR) is capable of extremely sensitive diagnostics of the ionosphere. Power from the pulsed 2.5 MW (currently about 1.3 to 1.5 MW) transmitter can be split with arbitrary ratio into two beams, allowing sensing through the observing region simultaneously with sensing outside of it or near its edge. Possible geometries are set by the locations of the two feeds on opposite sides of the rotatable azimuth arm, with the minimum zenith angle differences set by the physical sizes of the feeds. Raw data can be collected with a 25 MHz wide data taking system for later analysis while a narrower bandwidth system is used to provide on line monitoring. The current coding technique allows 300 m range resolution on the enhanced plasma line while ion line and natural plasma line data are also recorded from the same radar pulses. There some restrictions in simultaneous viewing resulting from the extremely high signal power in the enhanced plasma line. For further information you can contact Michael Sulzer (</span><span style='font-family:"Arial",sans-serif;color:blue'>msulzer@naic.edu</span><span style='font-family:"Arial",sans-serif'>).</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif'>Optical capability.</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>At Arecibo we have a variety of airglow and lidar instrumentation. Presently, airglow sensing equipment includes two Tilting-Filter Photometers, three Fabry-Perot Interferometers, and two All-sky Imagers. These instruments are located about 1000 feet from the center of the incoherent scatter radar.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>The "active" optical instruments (lidars) have the capability to monitor the upper stratosphere to lower thermosphere. We have three systems, two of which are configurable to monitor one each of the meteoric metals: Na, Fe, Ca, or Ca+. Alternatively, one of the two metal lidars can be configured as a Rayleigh lidar to measure temperature from the upper stratosphere to the mesosphere, from about 35 to 70 km. The third lidar is a Doppler-resonance lidar that measures temperatures within the metal layer by sensing the Doppler broadening in the D1 resonance line of K.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>Request for optical instrument support for ISR experiments must be included in the proposal. We encourage the PIs to contact our staff for special optical configurations and further information: Jonathan Friedman (</span><span style='font-family:"Arial",sans-serif;color:blue'>jonathan@naic.edu</span><span style='font-family:"Arial",sans-serif'>), Shikha Raizada (</span><span style='font-family:"Arial",sans-serif;color:blue'>shikha@naic.edu</span><span style='font-family:"Arial",sans-serif'>), or Jens Lautenbach (</span><span style='font-family:"Arial",sans-serif;color:blue'>jlautenbach@naic.edu</span><span style='font-family:"Arial",sans-serif'>).</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif'>Arecibo Observatory Remote Optical Facility (AO-ROF).</span></b><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>The AO-ROF is located on Culebra Island (18<sup>o</sup> 18' 18"N; 65<sup>o</sup> 18' 05"W), Puerto Rico, about 96 miles east of the Arecibo Observatory. The design of the facility enables it to host two optical instruments requiring large domes (5-ft diameter) and four optical instruments that require smaller domes (1-ft diameter). Exterior space is also available for the installation of radio receivers or other kinds of instrumentation.</span><o:p></o:p></p><p class=MsoNormal><span style='font-family:"Arial",sans-serif'>For further information you can contact Pedrina Santos (</span><span style='font-family:"Arial",sans-serif;color:blue'>pterra@naic.edu</span><span style='font-family:"Arial",sans-serif'>) or Eva Robles (</span><span style='font-family:"Arial",sans-serif;color:blue'>erobles@naic.edu</span><span style='font-family:"Arial",sans-serif'>).</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>______________________________________________</span><span style='color:blue'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'> <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:blue'>Christiano Garnett Marques Brum</span></b><b><span style='font-size:12.0pt;color:blue'><o:p></o:p></span></b></p><p class=MsoNormal><span style='color:blue'><a href="https://insider.sri.com/tools/organization/reportingStructureChart.php?uid=E27907"><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue;text-decoration:none'>Senior Research Associate</span></a> (</span><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>Assistant Director)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>Space & Atmospheric Sciences / Arecibo Observatory<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>Advanced Technology & Systems Division<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>SRI International<o:p></o:p></span></p><p class=MsoNormal><span lang=PT-BR style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>HC3 BOX 53995, Arecibo PR 00612 <o:p></o:p></span></p><p class=MsoNormal><span lang=PT-BR style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>787-878-2612x242<o:p></o:p></span></p><p class=MsoNormal><span lang=PT-BR style='font-size:10.0pt;font-family:"Arial",sans-serif;color:blue'>______________________________________________</span><span lang=PT-BR style='color:blue'><o:p></o:p></span></p><p class=MsoNormal><span lang=PT-BR><o:p> </o:p></span></p></div></body></html>