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MAJIS_MainRING _PhaseCurve
MAJIS Monitor phase curves of main rings
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


nadir offset


Low elevation (<0.2 deg), sampling from high phase to low phase; N(TBD) phase angles Acquisition at far distance (>8.105 km at closest approach) to mitigate the spikes issue (<1 e- impacts/s) constraining the resolution (IFOV>=120 km before binning) 100 kHz readout mode (lowest RON < 30 e-) Coordinated observations with JANUS would provide a phase function in the JANUS-MAJIS combined wavelength range
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc
conditions that make the observation not possible (e.g. thruster firing)