Comment on parameter names

[BaptisteCecconi]

I have issues with the names of the parameters, some of which are not explicit (or could be misleading, without reading the documentation). Mostly it is:

• instrument_ant_number: this is intended to refer to the number of antenna, where one can expect to get the number of the antenna in use. I suggest to replace with instrument_ant_count, which makes it fully explicit.
• instrument_feed: this is intended to refer to the number of antenna feed, whereas I would expect a antenna feed name with such a name. May be replace by instrument_feed_count?

[kettenis]

I think most, if not all, of the instrument_xxx parameters should be removed from the standard. These parameters are mostly meaningless unless you're doing an instrument-specific query.

[alle-ira]

We agree that instrument_xxx would be used for more advanced discovery. For instance instrument_ant_count could be of interest in the case of split array observations, when the user wants to select only those observations involving at least a given number of stations.