Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
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Page vii
... Light ( trans- lated by E. J. MOLERA ) 220 Note on Dark Transits of Jupiter's Satellites , by JOHN TEBBUTT , F. R. A. S ... 221 Subscriptions to the Memorial to the late Father PERRY . 222 Errata in Watson's Theoretical Astronomy , by ...
... Light ( trans- lated by E. J. MOLERA ) 220 Note on Dark Transits of Jupiter's Satellites , by JOHN TEBBUTT , F. R. A. S ... 221 Subscriptions to the Memorial to the late Father PERRY . 222 Errata in Watson's Theoretical Astronomy , by ...
Page 26
... lights and shadows . They will delineate the most delicate pencils of light : they will record the very line where the faintest ray is immersed in the tiniest shadow : but when contrast ceases to exist , they at once become dumb . The ...
... lights and shadows . They will delineate the most delicate pencils of light : they will record the very line where the faintest ray is immersed in the tiniest shadow : but when contrast ceases to exist , they at once become dumb . The ...
Page 27
... light and a dark background ; in the second place , this contrast was wanting ; the two discs reflecting nearly the same amount of light . Thus far I have advanced no new theory . I have stated a fact which Prof. HOLDEN has alluded to ...
... light and a dark background ; in the second place , this contrast was wanting ; the two discs reflecting nearly the same amount of light . Thus far I have advanced no new theory . I have stated a fact which Prof. HOLDEN has alluded to ...
Page 28
... light - ratio of the lens , the size of the stop , the focal length of the objective , the proper illumination of the object to be photographed , etc. Atmospheric disturbances are , perhaps , the most important factors to deal with in ...
... light - ratio of the lens , the size of the stop , the focal length of the objective , the proper illumination of the object to be photographed , etc. Atmospheric disturbances are , perhaps , the most important factors to deal with in ...
Page 29
... light . A Seed's 26 will be affected by any light whatsoever ; even by the so - called non - actinic red light of the dark room . This may not be noticed on the high lights of the picture , but the soft and delicate shades in the deep ...
... light . A Seed's 26 will be affected by any light whatsoever ; even by the so - called non - actinic red light of the dark room . This may not be noticed on the high lights of the picture , but the soft and delicate shades in the deep ...
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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