Download - Omega dataset available on PSA until today

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Page 1: Omega dataset available on PSA until today

Omega dataset available on PSA until today

B. Gondet (Ω/MEX)

MEx orbit: T = 6.5 hrs~ 100 orbits / month~ 5500 orbitsVariety of local timesOMEGA has operated over ~1300 orbits

Page 2: Omega dataset available on PSA until today

Omega dataset available on PSA until today

B. Gondet (Ω/MEX)

Orbit number from 6 to 2526January 2004 to december 2005

Page 3: Omega dataset available on PSA until today

Mission startLs=330°

End of the datasetLs=350°

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OMEGA dataset: 662 orbits covering one Martian year, from N mid-winter (Ls=330) to N mid-winter (Ls=350)

N spring N summer N fall N winter

Solar conjunction

Marsis antennadeployment mission start

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Global coverage

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High resolution coverage

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Sun elevationi < 0°

0 < i < 15°15° < i <30°

I > 30°

Per

icen

ter

latit

ude

Orbit number

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52 orbits over the south pole

Ls (°)

Orb

it’s

num

ber

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204 orbits over the north pole

Ls (°)

Orb

it’s

num

ber

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swath width mode altitude

16 high res. < 300 km

32 medium/high res.

300 km 950km

64 global mapping 950 km 1550 km

128 global mapping 1550 km – 4000 km

OMEGA scanning modes

Page 11: Omega dataset available on PSA until today

swath width mode altitude

16 high res. (~ 300m) < 300 km

32 medium/high res. 300 km 950km

64 global mapping 950 km 1550 km

128 global mapping (2 – 5 km) 1550 km – 4000 km

OMEGA scanning modes

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OMEGA naming convention

ORBnnnn_x.QUB data cubeORBnnnn_x.NAV navigation associated

nnnn = orbit numberx = cube number (from 0 to j)

(one cube per mode but also one cube per integration time)

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OMEGA baseline pointing mode

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Nadir pointing (typical mode SEA > 5°)

with cross-track offsets

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Orbit 61

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Orbit 61

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Orbits 600-610

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Orbits 900-910

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Special observations

LIMBSEPFPhobos

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surface + limb

AB

C

A-B: surface mapping

B-C: atmospheric mapping

α

α < ~ 30 °

S/C: 3 axis stabilized

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Special observations: limbs

313 observations

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Fixed targeted areas (point tracking, or EPF)

ABC

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Special observations : EPF

orbit date Ls (°) Longitude(E) latitude 604 10/07/04 59. 180. 0.

1639 26/04/05 200. 165. 25N 2008 08/08/05 265. 70. 48.5S Hellas 2139 13/09/05 286. 260. 85S PS 2219 06/10/05 301. 84.6 74S PS

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orbit # distance (km) px size (m) phase angle ( °)

756_0 149 170 m 62.6

413_0 1882 2200 m 47.2

Special observations : Phobos

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Observations examples

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spectra examples

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Longitude : 354.5-354.75 Latitude : 5.55S-4.45S

Albedo (1.3µm)

Hydratationcriterion

slopecriterion

Associated spectrum

Page 28: Omega dataset available on PSA until today

Longitude : 354.5-354.75 Latitude : 5.55S-4.45S

Albedo (1.3µm)

Hydratationcriterion

slopecriterion

Associated spectrumHRSC

Page 29: Omega dataset available on PSA until today

Longitude : 354.5-354.75 Latitude : 5.55S-4.45S

Albedo (1.3µm)

Hydratationcriterion

slopecriterion

Associated spectra HRSC

Page 30: Omega dataset available on PSA until today