1. Omega dataset available on PSA until today B. Gondet (Ω/MEX) MEx orbit: T = 6.5 hrs ~ 100 orbits / month ~ 5500 orbits Variety of local times OMEGA has operated over ~1300 orbits

2. Omega dataset available on PSA until today B. Gondet (Ω/MEX) Orbit number from 6 to 2526 January 2004 to december 2005

3. Mission start Ls=330° End of the dataset Ls=350°

4. OMEGA dataset: 662 orbits covering one Martian year, from N mid-winter (L s =330) to N mid-winter (L s =350) N springN summer N fallN winter Solar conjunction Marsis antenna deployment mission start

5. Global coverage

6. High resolution coverage

7. Sun elevation i < 0° 0 < i < 15° 15° < i <30° I > 30° Pericenter latitude Orbit number

8. 52 orbits over the south pole Ls (°) Orbit’s number

9. 204 orbits over the north pole Ls (°) Orbit’s number

10. swath widthmodealtitude 16high res.< 300 km 32medium/high res. 300 km  950km 64global mapping 950 km  1550 km 128global mapping1550 km – 4000 km OMEGA scanning modes

11. swath widthmodealtitude 16high res. (~ 300m)< 300 km 32medium/high res. 300 km  950km 64global mapping 950 km  1550 km 128global mapping (2 – 5 km)1550 km – 4000 km OMEGA scanning modes

12. OMEGA naming convention ORBnnnn_x.QUB data cube ORBnnnn_x.NAV navigation associated nnnn = orbit number x = cube number (from 0 to j) (one cube per mode but also one cube per integration time)

13. OMEGA baseline pointing mode

14. Nadir pointing (typical mode SEA > 5°) with cross-track offsets

15. Orbit 61

17. Orbits 600-610

18. Orbits 900-910

19. Special observations LIMBS EPF Phobos

20. surface + limb A B C A-B: surface mapping B-C: atmospheric mapping α α < ~ 30 ° S/C: 3 axis stabilized

21. Special observations: limbs 313 observations

22. Fixed targeted areas (point tracking, or EPF) A B C

23. Special observations : EPF

24. orbit #distance (km)px size (m)phase angle ( °) 756_0149170 m62.6 413_018822200 m47.2 Special observations : Phobos

25. Observations examples

26. spectra examples

27. Longitude : 354.5-354.75 Latitude : 5.55S-4.45S Albedo (1.3µm) Hydratation criterion slope criterion Associated spectrum

28. Longitude : 354.5-354.75 Latitude : 5.55S-4.45S Albedo (1.3µm) Hydratation criterion slope criterion Associated spectrum HRSC

29. Longitude : 354.5-354.75 Latitude : 5.55S-4.45S Albedo (1.3µm) Hydratation criterion slope criterion Associated spectra HRSC