Modif of spatial parameters + modif of registry details + suppression of todo + suppression of typo in table#71
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Bonnarel
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Bonnarel
changed the title
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approuved changes |
Changing "ant" (antenna) to "tel" (telescope)
| receiver nominal wavelength and D coincides with the telescope diameter (SD case) or the largest diameter of the array antennae or telescopes (interferometric case). | ||
| In interferometry, the correlator can also restrict the fov depending on the trade-off set to build the signal. | ||
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| Nominal wavelength SHOULD be taken as the mid value of the spectral range except if data providers have good reasons to propose another value which should be documented in the FIELD DESCRIPTION tag in that case. |
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How the nominal wavelength is defined in the data collection should be clarified if we want to query and compare on s_resolution or s_fov .
we would have to add a new item in the TAP radio extension to mention it , named em_nominal_wavelength for instance , with
em_nominal_wavelength , in meters, with ucd =em.wl.effective .
Is it necessary ?
Or can we rely instead , in the radio extension table, on the min and max values for all features depending on the spectral range : s_fov, s_largest_max scale and s_resolution ???
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How the nominal wavelength is defined in the data collection should be clarified if we want to query and compare on s_resolution or s_fov . we would have to add a new item in the TAP radio extension to mention it , named em_nominal_wavelength for instance , with em_nominal_wavelength , in meters, with ucd =em.wl.effective . Is it necessary ? Or can we rely instead , in the radio extension table, on the min and max values for all features depending on the spectral range : s_fov, s_largest_max scale and s_resolution ???
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For sure, nominal wavelength is used to estimate nominal s_fov and nominal s_resolution. But although I think queries on these nominal s_fov and s_resolution are useful for coarse grain discovery , I don't think we have demands for discovery using this nominal wavelength. So is it useful to add it in the list of attributes ? Thoughts ?
explicitly write the formula for s_fov_Min/max and s_resolution_min/max
loumir
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loumir
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I agree to simplify the text and just talk about the necessary JOIN .
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I confirmed the merging in order to have the rebuilt of the document |
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