Status Report

NASA Cassini Significant Events for 01/22/04 – 01/28/04

By SpaceRef Editor
January 30, 2004
Filed under , ,
NASA Cassini Significant Events for 01/22/04 – 01/28/04

The most recent spacecraft telemetry was acquired from the Goldstone
tracking station on Monday, January 26. 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 first Approach Science sequence, C42, continued this week with
completion of a flight software normalization procedure for Visual and
Infrared Mapping Spectrometer (VIMS), Cassini Plasma Spectrometer (CAPS) and
Composite Infrared Spectrometer, upload of VIMS flight software version 8.1,
clearing of the ACS high water marks, and continuation of CAPS and Radio and
Plasma Wave Science solar wind observations.

The C43 Preliminary Sequence Integration and Validation Sequence Change
Request approval meeting was held, and stripped subsequence files published
shortly thereafter for use by the instrument teams and the Spacecraft
Operations Office (SCO).

The Science and Sequence Update Process (SSUP) for the C44 sequence is
underway. C44 stripped subsequence generation (SSG) files have been released
for review and update. It was determined that no science allocation
planning or waiver meetings were required for the SSG phase of the SSUP.

A meeting was held to discuss the implications of the requested ACS flight
software update uplink windows on interwoven science activities during the
week of 27 April 2004. An action was taken by SCO and Uplink Operations to
produce a timeline of planned events.

The first of three planned Software Review/Certification Requirements
meetings was held for Ion and Neutral Mass Spectrometer (INMS) instrument
diagnostic flight software. As the INMS team reviews data returned from the
first upload they will determine if tests two and three are required.

Instrument Operations personnel produced a report of the analysis of filter
wheel movement timing. The precise knowledge of the duration of movements
allows for more flexibility in observation planning. The report was sent to
the Imaging Science Subsystem Science Team for incorporation into their
planning process.

A dataflow test to exercise the ability of the Huygens operations center in
Darmstadt, Germany to receive 66Kbps real-time broadcast data as well as
NERT TDS queries by Virtual Channel ID was held this week. This activity
was a rehearsal for the Probe relay demo to be held in March of this year.
A test report with the results of the dataflow test will be issued in the
next few weeks.

The 33rd meeting of the Cassini Project Science Group was held this week at
the California Institute of Technology, and at JPL in Pasadena, California.
Attendees are very excited about plans for approach science and the start of
tour operations.

SpaceRef staff editor.