TM figures

Allocated TM20.5 kbits/s 
Download capacity per orbit6.642 GB= 53.136Gbits

Subtelescopes/units that can be commanded independently

SoloHI consists of 1 white-light telescope with wide FOV. The image is captured on a mosaic of four 2048x1920 APS detectors that are read out independently. This gives flexibility for image operations: independent exposures, cadences, etc.). Data can be read out either from the whole detector or from selected subfields.

Typically, SoloHI images will have one of 3 typical FOVs defined below. These are used in the observing programs/modes currently defined but could be changed in-flight if necessary.

 detector size (radial x transverse)FOV (radial x transverse)TM/raw imagecompression rates
SoloHI Full frame image

3968 px * 3968 px

5º-45º x 5º-45º (40ºx40º)

info missing

lossless (factor 2.5) - lossy (up to 50)

SoloHI inner FOV subframe image

192 px * 512 px

5.8º-7.68º x 5º (1.88ºx5º)

13.5º-15.38º x 5º

18.5º-20.38º x 5º

  
Radial Swath subframe image

3968 px * 512 px

5º-45º x 5º (40ºx5º)  

Observational modes

Main science programs

source: SoloHI UM - SSD-DOC-SOLOHI-013 Rev. B draft 5 

The SoloHI baseline observing program will be defined to repeat for each occurrence of the same unique orbit (i.e. each orbit of the trajectory within the same resonance with Venus). Therefore, a SoloHI baseline observing program will be defined for each orbit phase in NMP/EMP and will be executed for all orbits within that resonance. 

Example of such an orbit plan is below:

The details of each observing mode are still to be provided by SoloHI.

Observing modes - Example plan Use case#images / dayScience data volume / daySoloHI data rateObserving duration / orbit 
    (Gbits) estimate(kbits/s)(days) example
Perihelion programs: 0.28-0.29 AU    

SoloHI Solar Wind Turbulence @perih

  12962.2226.53

SoloHI Shock Formation @perih

  4682.5430.33
       
Near-Perihelion programs: 0.29-0.36 AU    
SoloHI Near-perihelion Synoptic Program  3481.6920.35
SoloHI Solar Wind Turbulence Near-perihelion  7501.9423.22
SoloHI Shock Formation Near-perihelion  5162.4529.32
       
Far-Perihelion programs: 

0.36-0.42 AU

    
SoloHI Far-Perihelion Synoptic Program  1321.6419.77
       
Southern (star) Out-of-ecliptic programs: 0.5-0.7 AU (star)    
SoloHI Southern Synoptic Program  1040.8410.38

(star) Dependent on the trajectory

 

Examples of more-detailed observing program for 1 type of orbit during the mission:

SoloHI concept study report Dec 2011, needs update!