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MAJ_JUP_DISK_SCAN
Jupiter Nadir MAJ Scan
Observations of Jupiter clouds and spectroscopy of minor gases.
Scanning the instrument slit over Jovian disk (vertical direction) by means of internal pointing mirror, both dayside and nightside. Aims to cover at least the entire equatorial region (-30°:+30°) during low inclination phases and the polar regions during high inclination phase.

Duration: typically 20min/cube, max 30 min/cube, assuming 2.1 s per line
MAJIS

Pointing

nadir offset
Jupiter atmosphere

Advanced

Most common MAJIS observing types for Jupiter.
Every three Earth days. If data volume is available, a set of 2-3 cubes (depending on distance) shall be acquired for a full longitudinal coverage of the visible hemisphere every Jupiter rotation (9.55 h). This requires re-pointing between individual cubes. See MAJ_JUP_DISK_MOSAIC
any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc
out of eclipses, observations are not performed when the optical axis of satellite is not compliant with EID-MAJ-02050
Caveats:
MAG roll
conditions that make the observation not possible (e.g. thruster firing)
#update2023Oct16

Commanding

Related segment definitions

Segmentdefinition

Segment

JA_INCL

Segment

JA_M

Segment

J_AURORA

Segment

STAR_OCC

Segment

JM_PE_OBS

Segment

JA_PE_OBS

Segment

JM_INCL

Segment

MAJIS_OBSERVATION

Segment

MAJIS_PRIME_OBSERVATION

Power profiles

Event Time Mode User Defined Power (Watts)  (Custom power when selecting User Defined mode) Comment  (Comment when exported to observation definition file)

Start 00:00:00 SCIENCE_MAX 26.7 [Watt]

Start

00:00:00

SCIENCE_MAX

-

2 channels, 1 MHz, scan mirror

Data profiles

Event Time Mode User Defined Data Rate (bit/s)  (Custom data rate when selecting User Defined mode) Comment  (Comment when exported to observation definition file)

Start 00:00:00 User Defined 968000.0 [bit/s]

Start

00:00:00

User Defined

968000.0

bit/s: 968000 (max) – 484000 (min. daytime) or 194000 (min. nighttime). Maximum estimate is obtained assuming 508 spectels and 508 spectels for VISNIR and IR respectively. 5 bits/data element compression factor is considered.
Comment: daytime or nighttime observations are defined on the basis of sun incidence angle at the nominal pointing position at the beginning of the acquisition.

Data reduction factor
x 1-0.5, from spectral editing for dayside
x 0.5-0.25, from spectral editing for nightside (VISNIR OFF)
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