| MAJ_MainRING _PhaseCurve | Observations of the main rings at various phase angles (N angles), one ansae (always the same), 20 vertical lines
Pointing: S/C pointing ring plane at 1.8 R_J (extremity of main rings)
Satellite orientation: OFF-NADIR, Ring plane while maintaining horizontal orientation of MAJIS slit, MAJIS scan mode activated for vertical sampling centered on the rings (20 lines)
Duration: 200 sec for one observations at a given phase angle | MAJIS |
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| MAJ_Amalthea | S/C pointing Amalthea preferentially near maximal elongation of (2.54 R_J), 2 hemispheres, MAJIS spatial windowing (16 rows)
pointing: OFF-NADIR, S/C pointing Amalthea at 2.54 R_J while maintaining horizontal orientation of MAJIS slit
satellite orientation: Maintaining horizontal orientation of MAJIS slit, MAJIS scan mode activated for vertical sampling centered on the satellite (10 lines)
Duration: 100 sec for one hemisphere | MAJIS |
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| MAJ_BORESIGHT_ALIGNEMENT | Star sequence for geometrical calibration.
A star is initially pointed using the MAJIS boresight, then MAJIS is operated with the scan mechanism at high resolution (1/3 of IFOV) over 18 lines centered in the star. Then this operation is successively observed after 4 S/C repointings of 1.5° around X and Y.
Pointing : inertial
Satellite orientation: S/C pointing the star and MAJIS scans
Duration: 18 to 180 sec per position (5 positions in total)+ stabilization time for repointing not taken into account | MAJIS |
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| MAJ_JUP_EVENT_MONITORING | Study of the evolution of unusual phenomena in Jupiter atmosphere, especially in their zonal evolution MAJIS will acquire several “subcubes” with limited number of lines (about 80) as follows:
1. a series of sub-cubes (from 1 to 4) is acquired with the scan mirror to get the coverage of a limited latitude region at all longitudes on the visible side of the planet. Satellite is re-pointed before acquiring each sub-cube
2. the series at previous point is repeated at fixed time intervals (in the order of 1 h, TBC) to monitor the temporal evolution.
Pointing type: YS, Series of OFF-NADIR pointings (‘off-nadir scan mode’)
satellite orientation: HORIZONTAL
Duration:
160 sec for each sub-cube.
Time between series defines actual temporal sampling and is variable (zero data rate here).
Total duration about 5 h (1/2 of rotation period) | MAJIS |
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| MAJ_GCO5000_GLOBAL | Systematic mapping performed with cross-track binning by 4 during circular phase (~120 days)
3 km/pixel, 300x300 km swaths, spatial binning x 4.
Pointing: YS, Nadir
Satellite orientation: MAJIS slit at a slant with the ground track except at the equator
Duration: 4H per orbit (one cube: 6 min) | MAJIS |
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| MAJ_JUP_LIMB_SCAN | The MAJIS pointing mirror is used to scan the atmosphere of Jupiter over the limb up to 1500km. Exposure times are optimized for weak limb emissions.
The scan mirror step of 1/10 MAJIS IFOV shall constrain the spatial sampling provides a spatial supersampling adequate to reconstruct, by deconvolution, the signal vertical profile at sub-pixel scale.
Observations consists in sets of max. 8 cubes at different latitudes, around the limb of the planet.
Duration: Typically 20 min for each cube (110 lines), assuming 11 s per line | MAJIS |
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| MAJ_JUP_HIGH_FREQ_MONITORING | The observing type is designed to study the evolution of atmospheric features at high temporal frequency as well as to map specific atmospheric features at regional scale.
Scanning of features on the Jovian disc, on dayside as well as on nightside, with limited latitudinal coverage.
MAJIS will acquire one or more several “subcubes” with a limited number of lines (about between 64 and 160)
Duration: between 84 and 315 s for each cube, assuming 2.1 s per line | MAJIS |
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| MAJ_JUP_LIMB_SLEW | The scan the atmosphere of Jupiter over the limb up to 3000k is performed with a specific slew of the S/C
Individual lines are largely overlapped to provide actual supersampling (x 10) in the spatial domain and allow sub-pixel resolution by deconvolution.
Typically, we have cubes of about 300 lines by 50 pixels (~7500 km)
Pointing type:
OFF-NADIR (nominal pointing position over the Jupiter limb), continuous tracking (‘track tangent limb’)
satellite orientation:LIMB TANGENT (MAJIS slit tangent to the limb), very slow s/c slew to get oversampling (10 lines corresponding to one pixel IFOV)
Duration: 55 min for each cube (300 lines) | MAJIS |
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| MAJ_ICU | To monitor the radiometric performances of MAJIS using VISNIR and IR sources Specifically, there are several goals
A) tracking the evolution of the actual levels (before subtracting for CDS) in the digital dynamics (0-65535 at 100 kHz, 0-4095 at 1 MHz). Such an evolution could lead to adjust an offset which can be selected by TC (4 settings) so as to avoid reaching digital saturation for the read image before analog saturation.
B) tracking the evolution of the dark current and cosmetics (new hot / dead pixels)
C) tracking the evolution of the overall photometric response as a function of the signal (needed for the pipeline)
Pointing: MAJIS scan mirror oriented towards the ICU (8.5°)
Satellite orientation: Deep space
Duration: 10min | MAJIS |
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| JAN_SCI_LIMB | Children observations defined during scenarios
│ ├── JAN_SCI_LIMB_HAZES
│ ├── JAN_SCI_LIMB_HIGHPHASE
│ ├── JAN_SCI_LIMB_POLAR_SOUTH | JANUS |
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| JAN_IDLE | No observations, but instrument ON for thermal stabilization before observations or between two observation phases that are too close to switch the instrument OFF. | JANUS |
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| JAN_CONFIG_ALLOFF | No observations, but instrument ON for thermal stabilization of the complete electronics (PEU and detector are OFF) and for setting the observation sequences and between two observation sequences that are too close to switch the detector OFF. | JANUS |
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| JAN_CONFIG_ALLON | No observations, but instrument ON for thermal stabilization of the complete electronics (PEU and detector are ON) and for setting the observation sequences and between two observation sequences that are too close to switch the detector OFF. | JANUS |
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| JAN_OFF | No observations, instrument OFF. | JANUS |
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| JAN_SCI_SLEW | Observations of multiple frames in (m x n) positions targeted with a raster pointing of the S/C made with a continuous slew. The raster is done with continuous slew approach: images are acquired while the S/C is slewing; slew rate shall be adapted with the instrument angular sampling and the integration time. To be used while in J orbit or during FBs (out from CA phase) | JANUS |
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| JAN_SCI_RASTER | Observations of multiple frames in (m x n) positions targeted with a raster pointing of the S/C. The raster is done with a stop-and-go approach: the S/C maintain an inertial pointing allowing images acquisitions, then perform a slew to the new position and repeat the cycle till the (m x n) raster is completed. To be used while in J orbit or during FBs (out from CA phase).
Children observation defined during scenarios:
│ ├── JAN_SCI_RASTER_AMALTHEA_HIGH_RES
│ ├── JAN_SCI_RASTER_AURORAS
│ ├── JAN_SCI_RASTER_FEATURES
│ ├── JAN_SCI_RASTER_GLOBAL_MAP
│ ├── JAN_SCI_RASTER_HIGH_RES_MAP_JOINED_SET_003_S007_01_S00P01.def
│ ├── JAN_SCI_RASTER_HIGH_RES_MAP
│ ├── JAN_SCI_RASTER_IO_TRANSIT_001_PART_1_S007_01_S00P01.def (name non compliant)
│ ├── JAN_SCI_RASTER_IO_TRANSIT_001_PART_2_S007_01_S00P01.def (name non compliant)
│ ├── JAN_SCI_RASTER_IO_TRANSIT_001_S007_01_S00P01.def
│ ├── JAN_SCI_RASTER_LIGHTING_MAP
│ ├── JAN_SCI_RASTER_POLAR_SOUTH | JANUS |
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| JAN_SCI_PB | Observations of single or multiple frames with a pointing offset wrt to nominal S/C pointing (e.g., wrt nadir-looking while in G orbit, during FB or while in Jupiter orbit) | JANUS |
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| JAN_SCI_INERTIAL | TBW | JANUS |
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| GAL_WARMUP_GAN | Active operation for laser warmup. This observation shall be used before real science measurements, e.g. before closest approach. | GALA |
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| GAL_HR_TARGET_GAN | Additional science mode for Ganymede operations | GALA |
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| GAL_IDLE | Idle operations. | GALA |
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| GAL_LR_FB_ALBEDO | Passive albedo operations for flybys – before or after closest approach | GALA |
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| GAL_FULLSCIENCE_FLYBY | Primary full science for flyby operations during closest approach. | GALA |
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| GAL_MONITORING_GAN | Primary science mode for Ganymede operations | GALA |
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| GAL_GAN_OFF_POINTING | science mode for Ganymede off-nadir operations. | GALA |
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| 3GM_BISTATIC_RADAR | Characterization of the surface by determination of roughness, dielectric constant of surface material and material density. The chosen antenna points towards surface, radio signal reflects from surface and received on ground. USO unmuted. The HAA shall be in SCIENCE to calibrate the sloshing potentially excited by pointing the HGA toward a moon’s Surface. | 3GM |
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| 3GM_GRAVITY_TOUR | Gravity measurement during flyby requires the use of the HGA.
KaT and HAA should be operating during gravity measurement
USO assumed to be ON during the full tour: this should be defined in the scenario set-up and not at 3GM observation approach.
HAA should be in CONFIGURATION mode at least 48 hours before the gravity measurement.
The observation should start with 1 hour of HAA in SELF_CALIBRATION mode. KaT starts with 10min of warm-up.
Additional X/X and X/Ka (DST) link may be required whenever the Sun-
Earth-Spacecraft angle is < 60 deg to cancel noise due to the solar wind plasma | 3GM |
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| 3GM_GRAVITY_FLYBYS | Gravity measurement during flyby requires the use of the MGA.
KaT and HAA should be operating during gravity measurements
USO assumed to be ON during the full tour: this should be defined in the scenario set-up and not at 3GM observation approach.
HAA should be in CONFIGURATION mode at least 48 hours before the gravity measurement.
The observation should start with 1 hour of HAA in SELF_CALIBRATION mode. KaT starts with 10min of warm-up.
Additional X/X and X/Ka (DST) link may be required whenever the Sun-
Earth-Spacecraft angle is < 60 deg to cancel noise due to the solar wind plasma. | 3GM |
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| 3GM_GRAVITY_GCO500_200 | Gravity measurement during GCO500 and GCO200 will use the HGA during downlink sessions. If not possible, it will use the MGA. KaT and HAA should be operating during gravity measurement. USO is OFF during this phase (except in case of BSR opportunity). HAA should be in STANDBY mode at least 48 hours before the gravity measurement. The observation should start with 1 hour of HAA in SELF_CALIBRATION mode. KaT starts with 10min of warm-up. | 3GM |
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| 3GM_IO_PLASMA_TORUS_OCCULTATION | The radio science experiment 3GM will use navigation data in X/X and X/Ka band to characterize the Io plasma torus. The data generated by the DST in 2-way dual-frequency radio links will be the primary observable to perform this investigation. Occultations occur throughout the jovian tour, but their phasing is not always synchronized with the timing of dedicated Jupiter observations by the other orbiter experiments. USO will stay MUTED and HAA in nominal SCIENCE.
Note that other observation strategy would be possible (2-way triple link, 1-way X and Ka link with USO UNMUTED). | 3GM |
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| 3GM_JUPITER_OCCULTATION | The radio science experiment 3GM, with its 1-way dual-frequency radio links (X and Ka-band) referenced to an ultrastable oscillator (USO), is performed as JUICE spacecraft moves in and out of occultation. Occultations occur throughout the jovian tour, but their phasing is not always synchronized with the timing of dedicated Jupiter observations by the other orbiter experiments. USO unmuted, HAA in nominal SCIENCE. | 3GM |
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