OSIRIS operation summary Operations since last team meeting: Software update and (failed) active checkout Dec. 2006 Lutetia Observations in Jan. 2007 Mars Swingby Feb. 2007, followed by Jupiter observations Passive checkout May 2007 Active checkout ongoing now Busy period of 10 months Next major events: Earth flyby 13 Nov. 2007 Steins flyby Sept. 2008 Both preceded by an active checkout

OSIRIS operations since last meeting (Nov. 2006) Date Action Images Remarks Dec. 2006 Active checkout and software update 37 (incl. health check) Active checkout mostly failed 2-3 Jan. 2007 Lutetia Observ. 300 25 Jan. 2007 Software patch Trivial modification of uploaded software Feb.-March 2007 Mars swing-by 867 Including Jupiter Obs. 22 May 2007 Passive checkout 78 Total (mission) 7920

Active checkout and software update Phase 1: Observations of Mars before software update Nice images of Mars with Milky way Most other images do not point on Mars Software update Successful Active checkout after software update Failed due to software anomaly (DIB crash) unrelated to the update

Mars image (WAC Red and Green filters) Note the nice ghost image of overexposed Mars ©2006 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Software update More flexible operating with Monitoring sequence Better image compression algorithm Includes lossless compression Introduction of software windowing Bug fixes

Failure of phase 3 DIB crash in the very first telecommand after the software update (TestMMB) New variant of old problem Not completely understood, but workaround is known Workaround was not implemented in TestMMB Short term solution: Remove TestMMB from passive checkout sequence Mid term solution: Implement workaround in TestMMB during the next software update Positive effect: Successful test of the safety net! OSIRIS was switched-off by the spacecraft

Lutetia Observations Supporting observation in preparation of the flyby Made it into the plan together with Steins obs. from March 2006 Lightcurve was measured with both cameras and in seven filters with the NAC (360-930 nm) Additional full frames with 4 filters of each camera for calibration

Light curve of Lutetia Several team members worked on the light curve Example provided by P. Lamy Good consistency between different filters Some results were presented in Science session

Mars swing-by First in situ observation with OSIRIS Earth swing-by 1 was lost in 2005 Severe restrictions on operations Large solar elongation allowed four hour slot only before closest approach Solar eclipse required switch-off around closest approach Night side of Mars observed at low solar elongation after closest approach

Mars Cameras produced excellent images during approach phase Some issues with the NAC shutter Long observations to search for dust ring, atmospheric emissions and gas clouds were mostly overexposed In-field straylight was underestimated in the planning process Straylight investigation is ongoing (talk by G. Naletto) No Science talk about results from the Mars flyby on this meeting! We need to discuss how to proceed Can we exploit synergies with VIRTIS data?

Mars (NAC) True color image of Mars with the NAC ESA ©2007 MPS for OSIRIS Team - MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Mars (NAC) near-UV enhanced showing cloud structures Composite using orange, green and near-UV filters of the NAC near-UV enhanced showing cloud structures ESA ©2007 MPS for OSIRIS Team - MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Mars (WAC) Cloud feature seen with the WAC ESA ©2007 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA Cloud feature seen with the WAC

MARS (NAC) Cloud structures seen with the NAC (ratio green/red) ESA ©2007 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

Jupiter Observations Jupiter was observed shortly after the Mars flyby Driven by ALICE (remote support for New Horizons flyby of Jupiter) OSIRIS participated only during the first few hours Mainly for calibration A few long exposures on Na cloud and plasma torus

Jupiter NAC Data are still to be analyzed Ghost of Jupiter Jupiter Io Ganymed Europa Callisto

Passive checkout Nominal performance of the cameras WAC star field (512 x 512 pixels)

Targets observed with OSIRIS so far 3 comets LINEAR 2002 T7 Machholz 2004 Q2 9P/Tempel 1 Asteroid 21 Lutetia and 2867 Steins Several stars Eps. Aqr, 58 Aql, Vega, 16 Cyg, alpha Gru Starfield for geometric calibration (area 98) M42 Several “random” starfields Serendipitious observations of Lagoon Nebula, Neptune, asteroids, standard star,… Planets Venus Earth & Moon Mars Jupiter & moons Saturn & Titan Mars in situ

Upcoming Operations until end of 2008 Ongoing active checkout (Sept. 2007) Earth flyby in Nov. 2007 Passive checkout in Jan. 2008 Active checkout in July 2008 Steins flyby in Sept 2008

Long term plans Taken from: Presentation by P. Ferri, ESOC RVM 1 230111 RVM 2 220514 Lutetia Flyby 100710 Mars Flyby 250207 Earth Flyby Earth Flyby Steins Flyby 050908 Earth Flyby Comet Orbit Insertion 220814 Launch 020304 Landing 101114 Taken from: Presentation by P. Ferri, ESOC