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ivoa-std / ObsCoreExtensionForRadioData

ObsCore model extension for radio data
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scan_mode #56

Open alle-ira opened 3 months ago

alle-ira commented 3 months ago

Sect 4.5 - From the IVOA perspective of keeping separate time, space and energy domains, should we adopt two parameters: one for scanning in spatial coordinates (for instance sky_scan_mode) and the other for frequency scanning (for instance freq_scan_mode)?

Bonnarel commented 3 months ago

Can we imagine some vocabulary rule which allows combination of two terms ? So that we may use the same FIELD for either axis scan exclusively or combination of both ? This to avoid too much empty FIELDS in case.

alle-ira commented 2 months ago

We agree on the proposal of keeping one parameter, accompanied by a vocabulary and its rules. We could imagine scan_mode as composed by two terms, the first one (always present) defining the sky scanning mode and the second (optional) describing the frequency scanning mode if present. As an example, a frequency switching observation could have scan_mode='on, freq_switch' while an on-the-fly map could have scan_mode='otf_map' only.