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SWI_MOON_NADIR_STARE_FS
SWI MOON NADIR STARE FS
Same as SWI_MOON_NADIR_STARE_PS, except a frequency-switch calibration mode is used instead of position-switch. It enables spending ∼100% of the integration time on-source. Flyby: Two CTS spectra are recorded for 30 sec over 210 channels (16 bits coding). GCO: Two CTS spectra are recorded for 10 sec over 130 channels (16 bits coding). In both cases, two CCH measurements (20 bits coding) are recorded for 0.1 sec. Solar occultation: Two CTS spectra are recorded for 60 seconds over 10000 channels (16 bits coding), and two CCH measurements (20 bits coding) are recorded for 0.1 second. If the purity of the spectral band is good enough, there is an option to pre-compute ON−OFF for the CTS before downlink.
SWI

Pointing

nadir
-

Advanced

This mode will be used during phases I and III of the flybys, between −6hrs and −4.5hrs and between +3hrs and +4.5hrs from CA, and also continuously during phase II (from −1hr to +1hr of CA). During the whole GCO-500 phase, this mode will be used continuously for 5 orbits (i.e. 16-hrs) and then cycled equally with SWI_MOON_LIMB_SCAN_FS, SWI_MOON_LIMB_STARE_FS, and SWI_2D_MAP_FS. For polarization studies, this mode will be used much less often as it require a S/C rotation.
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc
TBD
conditions that make the observation not possible (e.g. thruster firing)
#update2021

Commanding