Great to see you trying to get some mapping data.

The military agency said it would restrict availability to the mission's most detailed mapping data for national security reasons.

The problem was not in the technology but in the mapping data.

Lunar mapping data collection started shortly after the 118 minute orbit was achieved.

So much of the mapping data is no longer collected by foot-slogging surveyors but by satellites.

The need for computerised mapping data was high and the response positive enough to form an advisory committee with paid sponsorship.

If we're to find a black hole, we'll need the most accurate mapping data possible.

Actually that is a bit misleading, seems to be based on very old mapping data.

It may involve compromises, for instance over the frequency with which comprehensive large-scale mapping data is preserved.

Hardware and software only recently (in 2000) became available that can satisfy most of the criteria necessary for digitally capturing "traditional" mapping data.