Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
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Page 16
... measures . To - night the shadow of the ball on the ring on the east side looks very convex to the ball , while on the preceding side it is considerably concave . 1880 , Oct. 15. 26 - inch equatorial . ( See Figure 12. ) Near A and B on ...
... measures . To - night the shadow of the ball on the ring on the east side looks very convex to the ball , while on the preceding side it is considerably concave . 1880 , Oct. 15. 26 - inch equatorial . ( See Figure 12. ) Near A and B on ...
Page 17
... measurements begun . 1882 , Sept. 25 , 15h 30m , Chicago m . t . The seeing is good . 151⁄2 - inch equatorial . ( See Figure 17. ) On the east side of the planet the outer ellipse of the outer ring prolonged towards the west seems ...
... measurements begun . 1882 , Sept. 25 , 15h 30m , Chicago m . t . The seeing is good . 151⁄2 - inch equatorial . ( See Figure 17. ) On the east side of the planet the outer ellipse of the outer ring prolonged towards the west seems ...
Page 26
... measure , d is the distance separating the axes of the wires , in cms . , and r is the radius of the wires in cms . In this case c is 2.9 amperes , or 0.29 units , d is 0.5 and r is 0.0033 . Whence f is 0.84 dyne , equivalent to 0.86 ...
... measure , d is the distance separating the axes of the wires , in cms . , and r is the radius of the wires in cms . In this case c is 2.9 amperes , or 0.29 units , d is 0.5 and r is 0.0033 . Whence f is 0.84 dyne , equivalent to 0.86 ...
Page 28
... measurements would become impossible . The exposure for a Seed's 26 may range between 30 and 50 seconds , whereas the full eclipse could be captured in 3 to 5 seconds . With skillful manipulation , I have no doubt that a negative can be ...
... measurements would become impossible . The exposure for a Seed's 26 may range between 30 and 50 seconds , whereas the full eclipse could be captured in 3 to 5 seconds . With skillful manipulation , I have no doubt that a negative can be ...
Page 36
... measures on the La Junta Photograph , which shows the covering moon with a diam- eter of 0.362 inch , the available corona not extending over three- fourths of an inch . With large photographs very accurate readings can be made ; the ...
... measures on the La Junta Photograph , which shows the covering moon with a diam- eter of 0.362 inch , the available corona not extending over three- fourths of an inch . With large photographs very accurate readings can be made ; the ...
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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