astronomical observations

The Sailor's Word-Book

There have been occasional slight records of celestial phenomena from the remotest times, but the most useful ones are those collected and preserved by Ptolemy. Since 1672, science has been enriched with a continued series of astronomical observations of accuracy and value never dreamed of by the ancients.

Related Words

  • Astronomical

    ·adj Of or pertaining to astronomy; in accordance with the methods or principles of astronomy. ...

    Webster's Dictionary of the English Language

  • lunar observations

    The method of observing the apparent distances between given celestial objects, and then clearing th...

    The Sailor's Word-Book

  • astronomical clock

    A capital bit of horology, the pendulum of which is usually compensated to sidereal time, for astron...

    The Sailor's Word-Book

  • astronomical hours

    Those which are reckoned from noon or midnight of one natural day, to noon or midnight of another. ...

    The Sailor's Word-Book

  • astronomical tables

    Tables for facilitating the calculation of the apparent places of the sun, moon, and planets. ...

    The Sailor's Word-Book

  • reduction of celestial observations

    The process of calculation, by which observations are rendered subservient to utility. ...

    The Sailor's Word-Book

  • astronomical place of a star or planet

    Its longitude or place in the ecliptic, reckoned from the first point of Aries, according to the nat...

    The Sailor's Word-Book