Note that all data volumes & rates are based on powers of 10, i.e. 1Gbit = 109 bits.

TM figures

Allocated TM10.5 kbits/s 
Download capacity per orbit3.4 GB= 27.2 Gbits

Subtelescopes/units that can be commanded independently

 wavelengthdetector sizeFOVTM/raw imagecompression rates
METIS_VLpolarized VL in 580-640nm (4 images)

2048 px * 2048 px

annular FOV 1.5º-2.9º

7.34 MB (14bit/px)

13-50

METIS_UV121.6nm (Ly_beta)

1024 px * 1024 px

annular FOV 1.5º-2.9º

1.84 MB (14bit/px)13-50

Full set of raw METIS images (4 VLs+1UV) accounts for 31.20MB
If partially* rebinned and compressed (factor 2.5), a full METIS dataset accounts for 4.6MB to 16MB depending on the science goal.

* METIS images are rebinned differently in the inner band of the FOV as in the outer band: typically with binning factor 2 < 2.5º and 4 >2.5º for global corona and binning factors 2 < 2.5º and 4 >2.5º for smaller scale features like CMEs and oscillations

Observational modes

source: Metis user Manual Iss 3 (May 2016), tables 4.1.3.2-3

Main science programs

Observing mode Use caseTelescope(s) CadenceData Vol / setData RateMax Duration
    (min)(Mbits)(kbits/s) 
METIS standard modes       
WIND 

electron density measurement and solar wind velocity

<0.5AU (1.6 - 5 solar radii)

METIS_VL+UV5-30min

14.12Mb

(4VL+1UV)

8 - 47days
        
MAGTOP 

slow wind source regions (magnetic topology)

near perihelion (1.6 - 5 solar radii)

METIS_VL+UV5-20min23.34Mb
(4VL+1UV)
20 - 78days
        
GLOBAL 

Global corona configuration/evolution during CME events

close or far from sun, binning dependent on distance

METIS_VL+UV5-30min12Mb - 8Mb
(4VL+1UV)
4.5 - 40

days

 

        
LT-CONFIG 

Long-term evolution of coronal configuration

close or far from sun, binning dependent on distance

METIS_VL+UV20-30min4.99Mb
(4VL+1UV)
2.8 - 4.2days
        
METIS special modes       

FLUCTS+TBF

 

Brightness fluctuations spectra

at perihelion only (1.6 to 3 solar radii)

METIS_VL only3 step acquisition,
variable cadence:
1s - 20s - 10min  

4.67Mb

(1 VL image)

311

(avg/hr)

hours
        
CMEOBS 

CME driven shocks and SEP (filamentary structure)

triggered by METIS-internal flag (at any distance)

METIS_VL+UV1-5min23.34Mb
(4VL+1UV)
77.8 - 389hours
        
COMET 

Mapping emission of sungrazing comets

(at any distance)

METIS_VL+UV5-20min23.34Mb
(4VL+1UV)
20 - 78days
        
PROBE 

Coordinated observations with Solar Probe Plus

(at any distance)

METIS_VL+UV5-30min19.85Mb
(4VL+1UV)
11 - 66days

Engineering modes & power consumption

Source: METIS EIDB Iss 3.2 Tables 4.11-4.13 for power consumption incl. PDR margin.  -> to be updated

Power allocation for METIS is 28W

Mode

Datarate: HK+LL+SCI

(bps)

Avg Power consumption

HOT / COLD (Watts)

Peak Power consumption

HOT / COLD (Watts)

 OFF

 0+0+0

0

0

SAFE 50+0+013.8 / 15.719.5 / 22.2
SETUP 50+0+016.8 / 18.225.7 / 28.3
SWM 50?+0+013.8 / 15.719.5 / 22.2
DIAG (**)500+80?+see above28.5 / 29.940.3 / 42.9
OPS(*)

500+80+see above

24.4 / 25.8

25.7 / 28.3

(*) All the observation modes are run in OPS engineering mode and consume the associated power.

(**) for diagnostics: similar to OPS mode but with IOM activation (extra 3.2W)

Objectives For METIS

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