Design and performance of the TANGO instruments for greenhouse gas detection
conference paper
The Twin ANthropogenic Greenhouse Gas Observers (TANGO) mission will measure CO2, CH4 and NO2 emissions at the level of individual facilities. A consortium consisting of ISISPACE (mission and satellite prime), SRON and KNMI (atmospheric science) and TNO (instruments prime) has been selected for the implementation of the TANGO mission which belongs to the ESA Scout framework, with a schedule of three years from implementation kick-off until launch. The TANGO space segment consists of two agile 16U CubeSat satellites flying within one minute of each other, each equipped with an imaging spectrometer. TANGO Carbon measures the emission of CH4 an CO2 in the SWIR1 spectral band while TANGO Nitro measures the emission of NO2 in the visible spectral range. Both instruments are reflective push-broom spectrometers, made almost entirely from aluminium, and will cover a 30-km swath from a 500-km altitude, with a spatial resolution <300 m in both across- and along-track. The instruments share a similar architecture, using freeform mirrors to achieve a high optical performance in a compact 8U envelope. In this paper, we share the current design status of both instruments, where a key engineering challenge is to fit each one in an 8U volume while achieving the desired spatial resolution and SNR. In addition, we present the TANGO Carbon instrument Structural Thermal Model (STM) that was realized and tested.
TNO Identifier
1018032
ISSN
0277786X
Publisher
SPIE
Article nr.
1369931-2
Source title
ICSO 2024, International Conference on Space Optics, Antibes Juan-les-Pins, France, 21-25 October 2024
Editor(s)
Bernard, F.
Karafolas, N.
Kubik, P.
Minoglou, K.
Karafolas, N.
Kubik, P.
Minoglou, K.
Collation
10 p.