Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
From inside the book
Results 1-5 of 78
Page 21
... obtaining sub- scriptions to the enterprise . The result was that a sum of about $ 7000 was obtained , with which a neat building. Astronomical Society of the Pacific . 2 I The Observatory of Swarthmore College, by Miss SUSAN J Cun ...
... obtaining sub- scriptions to the enterprise . The result was that a sum of about $ 7000 was obtained , with which a neat building. Astronomical Society of the Pacific . 2 I The Observatory of Swarthmore College, by Miss SUSAN J Cun ...
Page 22
$ 7000 was obtained , with which a neat building was constructed of wood , containing a central dome , in which is placed the equatorial telescope ; and the two wings , one for the transit instrument and mean - time clock , and the ...
$ 7000 was obtained , with which a neat building was constructed of wood , containing a central dome , in which is placed the equatorial telescope ; and the two wings , one for the transit instrument and mean - time clock , and the ...
Page 25
... obtained in this case are , therefore , limited to the stage of tem- perature corresponding to bright redness , assumed , in the absence of more precise knowledge , to be about 800 ° C . On closing the lamp circuit a change representing ...
... obtained in this case are , therefore , limited to the stage of tem- perature corresponding to bright redness , assumed , in the absence of more precise knowledge , to be about 800 ° C . On closing the lamp circuit a change representing ...
Page 27
... obtained of four different light - giving objects , differently illuminated , requiring four different exposures , viz : the actinic protuberances ; the bright inner corona ; the polar filaments ; and the extremely delicate shadings of ...
... obtained of four different light - giving objects , differently illuminated , requiring four different exposures , viz : the actinic protuberances ; the bright inner corona ; the polar filaments ; and the extremely delicate shadings of ...
Page 28
... obtained giving greater extension to the streamers than photography has yet been able to accomplish . Now we may turn to the question of exposure . No doubt we should always aim at a correct exposure . In developing a well- timed plate ...
... obtained giving greater extension to the streamers than photography has yet been able to accomplish . Now we may turn to the question of exposure . No doubt we should always aim at a correct exposure . In developing a well- timed plate ...
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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