Publications of the Astronomical Society of the Pacific, Volumes 3-4Astronomical Society of the Pacific, 1891 |
From inside the book
Results 6-10 of 78
Page 29
... obtained . No , you have crossed the limit of over - exposure , and a fogged plate is the inevitable consequence . One of the negatives of Prof. PRITCHETT'S party , taken at Norman , Cal . , January , 1889 , received an exposure of 30 ...
... obtained . No , you have crossed the limit of over - exposure , and a fogged plate is the inevitable consequence . One of the negatives of Prof. PRITCHETT'S party , taken at Norman , Cal . , January , 1889 , received an exposure of 30 ...
Page 30
... obtain greater extension of coronal streamers . I - To use Orthochromatic plates . I consider Vogel's Eoside of silver the best , when fresh , or Seed's 26 , when developed with a warm pyro developer in winter . II - The greatest ...
... obtain greater extension of coronal streamers . I - To use Orthochromatic plates . I consider Vogel's Eoside of silver the best , when fresh , or Seed's 26 , when developed with a warm pyro developer in winter . II - The greatest ...
Page 32
... obtained . It is a 70 - volt WESTON machine , and is driven by a gas - engine of 6 - horse - power . A set of 35 JULIEN storage cells can also be used when desired . The current is led into the slit room to a specially constructed arc ...
... obtained . It is a 70 - volt WESTON machine , and is driven by a gas - engine of 6 - horse - power . A set of 35 JULIEN storage cells can also be used when desired . The current is led into the slit room to a specially constructed arc ...
Page 35
... obtained the order of the ray , we pass along the ray to the surface of the sun by taking y I , and compute the angle by 3 N sin2 0 8 π The peculiarity discovered by this equation is that all the rays of the corona are confined to a ...
... obtained the order of the ray , we pass along the ray to the surface of the sun by taking y I , and compute the angle by 3 N sin2 0 8 π The peculiarity discovered by this equation is that all the rays of the corona are confined to a ...
Page 36
... obtained for July 29 , 1878 , by 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 ...
... obtained for July 29 , 1878 , by 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 ...
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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