Admiralty: The Star Almanac for Land Surveyors
Product description
Star Positions Made Practical
Published as Admiralty chart NP 321, this annual almanac gives land surveyors the positions of the sun, Polaris and a selection of bright stars in a form suited to precise fieldwork, including coordinates accurate to around one arcsecond.
It provides the data needed to determine true north or a precise geographical position through astronomical observation, a method still used where satellite positioning is impractical or requires independent verification.
Aimed ...
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Star Positions Made Practical
Published as Admiralty chart NP 321, this annual almanac gives land surveyors the positions of the sun, Polaris and a selection of bright stars in a form suited to precise fieldwork, including coordinates accurate to around one arcsecond.
It provides the data needed to determine true north or a precise geographical position through astronomical observation, a method still used where satellite positioning is impractical or requires independent verification.
Aimed at professional land surveyors and others carrying out astronomical surveying, this is a specialist technical reference rather than general reading.
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