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The UCD proposed for dispersion measure should be phys.dispMeasure

The current sentence:

Dataproduct_type “timeseries" may be ambiguous for dynamic spectra, so a dataproduct_subtype can be used, or a new dataproduct_type may be introduced.

could be replaced by:

Dataproduct_type “timeseries" may be ambiguous for dynamic spectra, so a dataproduct_subtype can be used, or a new dataproduct_type may be introduced, following the EPNcore dataproduct_type list, which includes a dynamic-spectrum type.

I have proposed a PR (#4) tentatively fixing the pre-release preparation workflow.

Here:

should be replaced by "dynamic spectra".

I suggest to change the title to "Radio astronomy in the VO: services implementation review" .

it reflects the review on all services considered in this IVOA Note.

usually , the Implementation Note document is more a way to explain what to do for implementing a new IVOA specification .

what do you think?

I propose a new appendix in #6 for Solar system low frequency radio astronomy (mostly dynamic spectrum data).

In section 3.1, the line:
ObsTAP services: ATOA, MWRA (section A.10), ASKAP, JIVE (section A.8)

should read:
ObsTAP services: ATOA, MWA (section A.10), ASKAP, JIVE (section A.8)

To me, the important point here is to foster interoperability and convergence: either by promoting or recommending a sub-set of formats (which is not what we want to do, as written in the note), or providing metadata mapping between the metadata of those products and the IVOA data models.

In this sense, mentioning "HDF5" as a valid format is not enough, since, it doesn't tell anything on the metadata dictionary in use. LOFAR has setup a list of ICD documents specifying how various dataproduct types shall be serialized into HDF5. That should be taken as a good practice, and might be a starting point. Listing other HDF5 flavours would also be good.

The current author list refers to the RadioIG members. Shall we add names explicitly?
I think it would be more fair to authors who participated in the document edition, in the preparation of the note through the discussion workshops.