transit circle การใช้

• During the Second World War, the equatorial mount and transit circle were lost.
• He possessed several valuable instruments, among which was one of Troughton's best transit circles.
• The prime meridian passes through the transit circle ( ) of the Greenwich observatory.
• When the observatory was built, he used a Jones Mural Circle and a Dolland Transit Circle.
• Thereupon he rejoined the Naval Observatory, and began working in the 6 " Transit Circle Division.
• Following the death of Martins, the Repsolds again took the lead and made many transit circles.
• He created the Groombridge Transit Circle in 1806, which Stephen Groombridge used to compile his star catalogue.
• Between 1967 & ndash; 69 he assisted in positional observations with the observatory's 7 " transit circle.
• When the Airy transit circle was built, a mercury basin was used to align the telescope to the perpendicular.
• The meridian chosen was that which passed through the Airy transit circle at Greenwich and it became the prime meridian.
• The principle transit circle was a 3-inch Combined Transit and Zenith telescope designed by Warner & Swasey especially for Illinois.
• In 1721, Great Britain established its own meridian passing through an early transit circle at the newly established Royal Observatory at Greenwich.
• In 1934 he became director of the 6 " Transit Circle Division, and would lead the division for the next 25 years.
• The final meridian was established as an imaginary line from the north pole to the south pole passing through the Airy transit circle.
• The instruments to move into the domes were a 15-inch ( 38 cm ) transit circle was housed in a separate building further west.
• The observatory was also equipped with a 42-inch focal-length achromatic refractor by Tulley, a transit circle by William Simms, and a clock by Hardy.
• Additionally, through a National Science Foundation of America grant, he was in the process of refurbishing the Observatory's 6-inch meridian transit circle to recommence meridian observations.
• He became Astronomer Royal in 1835, and among his many accomplishments was building of the Transit Circle telescope in the Greenwich Observatory's Meridian Building in 1850.
• In 1991, Oslo Sporveier presented plans involving a rapid transit circle line in Oslo, connecting the newly built hospital Rikshospitalet with the rest of the city.
• Except for a stint in the Time Service Division ( 1915-1919 ), he would remain with the transit circle department for the remainder of his career.