CALPRODUCT-NS-009: NISP-S Wavelength Transfer to Self-cal¶
Parent requirement¶
Scheduling¶
Once during PV phase, and after 1 year of science operations.
Time-critical¶
Yes. Must be executed immediately before or after CALPRODUCT-NS-008: NISP-S Wavelength Dispersion with Planetary Nebulae.
Objective¶
The wavelength dispersion is established using observations of a planetary nebula (CALPRODUCT-NS-008: NISP-S Wavelength Dispersion with Planetary Nebulae).
To provide an independent check of the wavelength dispersion solution on a regular basis, the solution must be transfered to the Self-cal field by identifying suitable secondary standards. The latter can be point-like extra-galactic emission-line sources, as well as stars with high-S/N emission and absorption lines.
The observations of the Self-cal field must immediately follow (or precede) the observations of the planetary nebula. Otherwise, changes in the thermal state of the telescope may alter the wavelength dispersion before it can be transferred to the Self-cal field.
Fulfilled by¶
Data volume¶
NISP: 3708 MB = 9*(3*NP +NS)
VIS: 16272 MB = 36*VS
Processing input¶
Ground Processing Input Data:
Data Description:
Processing output¶
A list of targets in the Self-cal field with accurately calibrated spectral features that can serve as wavelength hard points.
Quality control parameters¶
DataModel: https://gitlab.euclid-sgs.uk/
Contact person¶
NISP-S calibration scientist