Monthly Notices of the Royal Astronomical SocietyPriestly and Weale, 1861 |
From inside the book
Results 1-5 of 25
Page 1
... length of 800mm ( 32 inches nearly ) , and was used with a magnifying power 47. The micrometer consisted of a glass plate in the field of view , bearing a net of equal divisions , which divided the whole field into squares of 51 " each ...
... length of 800mm ( 32 inches nearly ) , and was used with a magnifying power 47. The micrometer consisted of a glass plate in the field of view , bearing a net of equal divisions , which divided the whole field into squares of 51 " each ...
Page 22
... length ) , and is in course of construction , when it arrives , may per- haps give a totally different direction to the efforts of the Observatory . Taschenbuch für Mathematik , Physik , Geodäsie , und Astro- nomie . Von Dr. Rudolf Wolf ...
... length ) , and is in course of construction , when it arrives , may per- haps give a totally different direction to the efforts of the Observatory . Taschenbuch für Mathematik , Physik , Geodäsie , und Astro- nomie . Von Dr. Rudolf Wolf ...
Page 25
... length of 8 feet , and is an excellent in- strument of its class . Price 120l . without the piers . The Meridian Circle , by Jones , is 6 feet in diameter , and its telescope , of the same focal length , has a clear aperture of 4 inches ...
... length of 8 feet , and is an excellent in- strument of its class . Price 120l . without the piers . The Meridian Circle , by Jones , is 6 feet in diameter , and its telescope , of the same focal length , has a clear aperture of 4 inches ...
Page 40
... length and 5 inches aperture , and the Fraunhofer Equatoreal , of 8 feet 3 inches focal length and 6.5 inches aperture . The internal and external contacts were observed as fol- lows , in Durham sidereal time : - Internal contact ...
... length and 5 inches aperture , and the Fraunhofer Equatoreal , of 8 feet 3 inches focal length and 6.5 inches aperture . The internal and external contacts were observed as fol- lows , in Durham sidereal time : - Internal contact ...
Page 43
... length . A power of 126 was first applied ; but , owing to the unsteadiness of the atmosphere at so low an altitude , micro- metrical measurements of the diameter of Mercury were found to be quite impracticable . Two measures of the ...
... length . A power of 126 was first applied ; but , owing to the unsteadiness of the atmosphere at so low an altitude , micro- metrical measurements of the diameter of Mercury were found to be quite impracticable . Two measures of the ...
Other editions - View all
Common terms and phrases
2r+g Airy Alhazen Annex appears April Astronomer Royal bright Calculation CAYLEY clock Comet computed corrected crater Decl declination diameter difference distance Ditto ditto edge Ephemeris equations Equatoreal error excentricity eye-piece Greenwich inches aperture instrument July June Jupiter Jupiter's Satellites latitude light limb longitude Lunar m² e m² n² Mars Mean Solar measures Memoir meridian Minor Planets Monthly Notices Moon Moon's Mean Motion N.P.D. from Observation Nautical Almanac nearly Nebula nucleus Number of Observations obtained Occultation orbit parallax perihelion photographs Prof R.A. from Observation Radcliffe Catalogue radiation Right Ascension ring Royal Observatory Saturn Secular Acceleration shadow Sirius Small Planets Society Solar Eclipse soleil stars Struve Sun's disk surface T. W. Webb taches telescope term thermometer tion Transit of Mercury Ursa Variable Variable Stars W. R. Dawes Weisse