Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
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Page 21
... methods of finding Latitude , Time , etc. , it was deter- mined , about five years ago , to make an effort to secure a small ob- servatory equipped with instruments for teaching purposes . It was thought that , perhaps , a sum of $ 2000 ...
... methods of finding Latitude , Time , etc. , it was deter- mined , about five years ago , to make an effort to secure a small ob- servatory equipped with instruments for teaching purposes . It was thought that , perhaps , a sum of $ 2000 ...
Page 33
... method of pho- tographing the solar prominences devised by the writer in 1889. But a horizontal telescope was used , and the distortion of the mirror by the sun's heat made it impossible to secure photographs of any value . It seemed ...
... method of pho- tographing the solar prominences devised by the writer in 1889. But a horizontal telescope was used , and the distortion of the mirror by the sun's heat made it impossible to secure photographs of any value . It seemed ...
Page 34
... methods is given in connection with its use in electricity and magnetism , we are now concerned only in the identi- fication of the direction of the coronal streamers with the lines of force produced under these conditions . The ...
... methods is given in connection with its use in electricity and magnetism , we are now concerned only in the identi- fication of the direction of the coronal streamers with the lines of force produced under these conditions . The ...
Page 43
... method of estimating the distance of the stars of his list , that is , he has divided them into four classes according to the mag- nitude of the observed proper motions , thus : Class I contains 551 stars whose proper motions are ...
... method of estimating the distance of the stars of his list , that is , he has divided them into four classes according to the mag- nitude of the observed proper motions , thus : Class I contains 551 stars whose proper motions are ...
Page 47
... method fol- lowed at Potsdam , the spectrum of the star and that of terrestrial hydrogen are photographed together , and the displacement of the star lines on the photograph in the neighborhood of the Hy line , is after- wards measured ...
... method fol- lowed at Potsdam , the spectrum of the star and that of terrestrial hydrogen are photographed together , and the displacement of the star lines on the photograph in the neighborhood of the Hy line , is after- wards measured ...
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Common terms and phrases
angle aperture appears Astronomical Astronomical Society atmosphere August axis bright BURCKHALTER California Street Catalogue Chicago Section chronometer Comet Committee copies corona coronal pole crater dark diameter Directors disc distance drawings E. E. BARNARD eclipse elected elongated equator equatorial exposure eye-piece HOLDEN inches instrument J. M. SCHAEBERLE July Jupiter Jupiter's KEELER latitude Library Lick Observatory light limb London longitude lunar magnitude means meeting meridian meridian circle meteors minutes Miss CLERKE MOLERA Moon Mount Hamilton nebula negatives object observations obtained Pacific parallax Paris photographic PIERSON planet plates polar position present Prof Professor WEINEK proper motions Publications radiant rays reference book right ascension ring San Francisco satellite SCHMIDT Secretary seen shadow solar spectra spectrum spot stars stellar sun-spots sun's telescope temperature tion TRANSIT OF MERCURY U. S. Naval Observatory University visible W. H. S. MONCK W. W. CAMPBELL Washington Zodiacal light