1. OSIRIS operation summary
Operations since last team meeting (after commissioning, pointing, and interference)
Software updates in January and June 2005
Door operation test in May 2005
Passive checkouts March 2005 and October 2005
Deep Impact observations of comet 9P/Tempel 1 in June/July 2005
Participation in Earth flyby 1 had to be cancelled due to front door anomaly

2. OSIRIS operations since last meeting (Oct. 2004)
Date
Action
Funct. tests
Sync. tests
Other data
Total
20 Jan. 2005
Software update 18 64 75
157
30 Mar. 2005
Passive checkout 0 24
106
31 May 2005
Front door test
14 June 2005 61
143
28 June-14 July 2005
Deep Impact 36
2342
2378
04 Oct. 2005
Passive checkout 1 27
109
Total (mission)
1507
928
3723
6158

3. Software update January 2005
Update intended to solve front door anomaly + minor software changes
Front door situation was not improved
Had worked on flight spare
Prompted full scale investigation of doors
Took opportunity to observe bright comet Machholz

4. Comet Machholz observations
Comet was about Magnitude 4
Heliocentric distance 1.21 AU, distance from Rosetta 0.44 AU
Solar elongation 97 deg, phase angle 61 deg.
Angle between Rosetta and Earth as seen from comet 14 deg.

5. Comet Machholz (2) Filters NAC: Orange, green, blue, red, near-IR
Filters WAC: Red and green broad, CN, OH, CS, UV 375, UV 245
Exposure times limited to 1-2 minutes due to excessive cosmic ray events
Major solar flare

6. Images of Machholz WAC red (left) and green (right) broad band filters
Total exposure time 5 minutes
Logarithmic presentations
6500 km/Pixel
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

7. Images of Comet Machholz (2)
NAC color composite (orange, green, blue filter)
Logarithmic presentation
Total 5 minutes exposure time each filter
Field of view x km
~ 1300 km/Pixel
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

8. Images of Comet Machholz (4)
CN (left) and CS (right)
Scales logarithmic
CN: 6 minutes total exposure
CS: 10 minutes total exposure
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

9. Machholz images (4) OH: Total exposure time16 minutes
Logarithmic image
Plot: Radial profile with error bars
Geometric distortion not corrected
©2004 MPS for OSIRIS Team
MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA

10. Door test and software update May/June 2006
Test of door motion with new software
Worked!!!
Software verification was used to get observations of solar analog 16 Cyg
WAC
NAC

11. Passive checkouts Test of mass memory Exercise mechanisms
Front door
Filter wheel
CCD noise test (“Sync. Test”)
Bias and dark (monitor CCD health)
“Flatfields” with internal lamps
Random star field (focus)

12. Checkout issues Low data volume
~20 MB for OSIRIS
Lots of straylight with closed door at certain solar elongation angles
Some flat fields are completely overexposed
Solution with software binning (instead of hardware binning) and autoexposure foreseen
Also take comparison images with lamp off

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

14. Deep Impact 2 weeks of monitoring of comet Tempel 1
WAC: OH, CN, Na, OI filter + continuum
NAC: orange, red, near-IR, IR, clear filter
2378 images taken, very few errors
Simultaneous imaging software bug popped up after the first few hours
6 shutter errors
“Fast” imaging worked very well

15. Operations 2006 2 Passive checkouts March 2006 and August 2006
Active checkout November/December 2006
Run checkout sequence
Software update
Stellar calibrations (pointing requests possible)
Next big event will be Mars flyby Feb. 2007

16. Long term plans Taken from: Presentation by P. Ferri, ESOC
RVM
RVM
Lutetia Flyby
100710
Mars Flyby
250207
Earth Flyby
Earth Flyby
Steins Flyby
050908
Earth Flyby
Comet Orbit Insertion
Launch
Landing
Taken from: Presentation by P. Ferri, ESOC