Truths

SpaceTruths

Truths Mission

The Truths Mission

XXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX  XXXX XXXX

XXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX  XXXX XXXX

Source and credits: ESA, PMOD/WRC

PMOD/WRC instrument: CSAR

PMOD/WRC Instrument: Cryogenic Solar Absolute Radiometer (CSAR)

The Cryogenic Solar Absolute Radiometer (CSAR) onboard the ESA TRUTHS mission will measure the Total Solar Irradiance with unprecedented accuracy and do in-orbit calibration of the Hyperspectral Imaging Spectrometer, allowing SI-traceable hyperspectral images of the Earth to be taken. The launch is planned for 2030.

Phase B2 kicked-off at the beginning of 2024, which is dedicated to designing and building a prototype (breadboard) of the instrument to demonstrate the technology in a relevant environment. PMOD/WRC, as part of the Swiss consortium led by Thales Alenia Space Switzerland, designed, manufactured, and assembled the majority of the measurement block as well as the front-end electronics (FEE). The rest of the consortium (Thales Alenia Space Switzerland & Micos Engineering GmbH, Switzerland) was in charge of the breadboard cryostat and the precision apertures with the cover-plate that they are mounted on. Tests on the prototype instrument will be performed in the first quarter of 2025, and will culminate in a Preliminary Design Review (PDR) at the end of the year.

Progress was made at PMOD/WRC in the area of: i) machining thin-walled absorbing black bodies, which are coated with carbon-nanotubes (Figure 1), ii) manufacturing cryogenic temperature sensors out of ultra-thin copper wire (ten meters of wire with a thickness of less than a quarter of a human hair), and iv) SI-traceable electrical power measuring electronics that will be able to fly on a satellite.

Scientific Objectives

XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX

XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX

Source and credits: ESA, PMOD/WRC

Figure 1. Rear view of a TRUTHS CSAR cavity assembly prototype.

News & Info

News

XXXX

XXXX XXXX XXXX . . .

Information

Links

XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX

Main Collaboration Partners

XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX

Swiss Scientific Contact

XYZ

Mission Facts

Mission Facts

Launch tbd
Launch rocket tbd
Orbit tbd
Nominal mission duration tbd
Extended mission duration tbd
PMOD/WRC instrument/involvement CSAR
Mass –
Dimensions –
Power consumption –
Funding –

Source and credits: ESA, PMOD/WRC