From: LARRY KLAES (ljk4_at_msn.com)
Date: Fri Feb 13 2004 - 10:57:40 PST
>To: "Cassini Spacecraft Updates" <Cassini_at_jpl.nasa.gov>
>Subject: Cassini Significant Events for 02/04/04 - 02/11/04
>Date: Fri, 13 Feb 2004 09:47:51 -0800
>Cassini Significant Events
>for 02/04/04 - 02/11/04
>The most recent spacecraft telemetry was acquired from the Goldstone
>tracking station on Monday, February 9. The Cassini spacecraft is in an
>excellent state of health and is operating normally. Information on the
>present position and speed of the Cassini spacecraft may be found on the
>"Present Position" web page located at
>The Radio and Plasma Wave Science (RPWS) and Cassini Plasma Spectrometer
>(CAPS) solar wind observations concluded this week. Cassini has begun
>data for the first color Saturn and ring approach movies. Ultraviolet
>mosaics of the Saturn magnetosphere continue to map neutral and ion photon
>emissions to derive the distribution and density of atomic and molecular
>Additional on board activities included uplink and execution of power cycle
>commands to perform a Magnetospheric Imaging Instrument (MIMI) Low Energy
>Magnetospheric Measurement Subsystem recovery, execution of the Visual and
>Infrared Mapping Spectrometer (VIMS) flight software checkout, a Cassini
>Plasma Spectrometer configuration, calibration and master instrument
>expanded block load for participation in solar wind survey observations,
>uplink and execution of Ion and Neutral Mass Spectrometer (INMS) diagnostic
>flight software, deactivation and deregistration of the INMS memory dump
>mini-sequence, RPWS high frequency receiver calibrations, a reaction wheel
>unload, and clearing of the ACS high water marks.
>The Navigation team acquired 15 out of 16 scheduled optical navigation
>(OPNAV) images of the small Saturnian satellites this week. Spacecraft
>pointing for all received frames was excellent. These were the first sets
>images dedicated towards optical navigation of Cassini. Previous OPNAVs
>were performed only for calibration purposes.
>The C43 Final Sequence Integration and Validation (FSIV) Sequence Change
>Request approval meeting was held this week with sequence approval
>for Thursday. The Preliminary Sequence Integration and Validation (PSIV)
>sub-phase has begun for approach science sequence C44.
>A wrap up meeting was held for Science Operations Plan (SOP) implementation
>of tour sequences S21, and S22. These sequences will be archived until
>February of 2006 when the S21 aftermarket process begins. Preliminary port
>deliveries were made for SOP Implementation of tour sequences S23 and S24.
>Spacecraft Operations successfully completed a dry run rehearsal of the
>Probe Relay demonstration in the ITL last week. This week, an internal peer
>review was held for this activity. The actual demonstration will execute
>the spacecraft in February and March of this year. The Probe Relay Demo
>simulates the actual Relay sequence to be used in January 2005 when the
>Huygens Probe reaches Titan.
>Cassini and other JPL personnel supported the co-located panel meetings for
>the Huygens Mission delta Flight Acceptance Review (FAR) at Alcatel. The
>three panels went through all the Review Item Discrepancies (RIDs)
>by the reviewers. The RIDs were processed with either a closure response or
>further action was assigned. The follow on actions were to either clarify
>points in certain documents, perform additional confirming analysis or
>testing. Each panel has prepared reports that will be submitted to the
>board meeting being held on February 13.
>The Cassini Radio Science Task Lead presented a briefing to the Program
>Manager and Cassini staff on the status of the anomaly of the Ka-band
>Translator (KaT). A representative from Alenia Spazio, the manufacturer of
>the KaT, traveled from Italy to participate. The presenters gave the
>background and history of the anomaly as well as the current plans for
>attempted recovery, probably starting in mid March.
>VIMS instrument personnel attended a team meeting in Tucson, Arizona.
>Topics of discussion included tour operations and plans.
>So far at least 295 VIMS data cubes have been received during C42. Data
>from last weeks VIMS flight software checkout has been initially processed.
>This version 8.1 upgrade was to add the capability to spectrally sum the
>data. The software appears to have performed properly, and the spectrums
>summed as expected
>A delivery coordination meeting was held for the Command Database version
>Cassini presentations were given this week at career day events for the
>American Association of University Women, and to 250 students at Bell
>Gardens High School in Montebello, California.
>The European Space Agency has released the February 2004 Huygens Status
>Report. Topics include the revised mission implementation, and Delta
>Acceptance Review status. For more information go to:
>Cassini is a cooperative project of NASA, the European Space Agency and the
>Italian Space Agency. The Jet Propulsion Laboratory, a division of the
>California Institute of Technology in Pasadena, Calif., manages the Cassini
>mission for NASA's Office of Space Science, Washington, D.C.
>Cassini Mission to Saturn and Titan
>Jet Propulsion Laboratory
>California Institute of Technology
>National Aeronautics and Space Administration
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