CHAR-TEL-002: PLM contamination¶
Parent requirement¶
Objective¶
Contamination by volatile water ice will lead to a number of effects in the spectrophotometric data from absorption, interference and scattering.These can - in principle - be used to infer the conmtamination states of the telescope and instruments, i.e. the amount of water ice on a surface.
While the physical principles are known, the absolute amount of contamination of an optical element (or group of elements) will be difficult to determine in flight. Using a suitable combination of measurements with both instruments, it might be possible to constrain contamination to specific components, helping to fine-tune a decontamination procedure.
Cadence¶
Monthly.
Observations¶
Methodology / Uplink procedure¶
Targets and pointing constraints¶
Instrument configuration¶
Inter-operability constraints¶
Dependencies¶
Fulfilling¶
Fulfilled by¶
CALBLOCK-PV-001: Self Calibration
Time-critical¶
No.
Validation¶
Recovery¶
In-orbit duration¶
Processing time¶
Processing input¶
Ground Processing Input Data:
Data Description:
Data volume¶
Processing tools¶
Processing element¶
DataModel: https://gitlab.euclid-sgs.uk/
Quality control parameters¶
DataModel: https://gitlab.euclid-sgs.uk/
Required accuracy, constraints¶
Processing method¶
Processing output¶
If possible, estimates of the absolute amount of contamination of a group of optical elements.
Contact person¶
Calibration Lead
Status¶
2026/09/18 - In progress.
Comments¶