 | 1902 - 584 pages
...the camera box of the previous instrument, shall be of immense rigidity and str"""'1. This tube, 64 feet in length, is supported at its middle point by...in the upper section of the iron column the whole instruFio. 4. STAR CLUSTEE MESSIER 11. Large scale photograph taken with the foity inch Verkes telescope... | |
 | Smithsonian Institution. Board of Regents - 1903 - 902 pages
...the camera box of the previous instrument, shall be of immense rigidity and strength. This tube, 64 feet in length, is supported at its middle point by...twenty-four hours. Although the moving parts weigh over 20 tons, the telescope can be directed to any part of the sky by hand, but this operation is much facilitated... | |
 | Smithsonian Institution. Board of Regents - 1903 - 1122 pages
...the camera box of the previous instrument, shall be of immense rigidity and strength. This tube, 64 feet in length, is supported at its middle point by...such a rate that it would complete one revolution in twenty -four hours. Although the moving parts weigh over 20 tons, the telescope can be directed to... | |
 | Smithsonian Institution. Board of Regents - 1903 - 892 pages
...the camera box of the previous instrument, shall be of immense rigidity and strength. This tube, 64 feet in length, is supported at its middle point by...twenty-four hours. Although the moving parts weigh over 20 tons, the telescope can be directed to any part of the sky by hand, but this operation is much facilitated... | |
 | Smithsonian Institution. Board of Regents - 1903 - 906 pages
...the camera box of the previous instrument, shall be of immense rigidity and strength. This tube, fi4 feet in length, is supported at its middle point by...to accurate parallelism with the axis of the earth. Hy means of driving mechanism in the upper section of the iron column the whole instrument is turned... | |
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This tube, 64 feet in length, is supported at its middle point by the declination axis, which in its turn is carried by the polar axis, adjusted to accurate parallelism with the axis of the earth. By means of driving mechanism in the upper section of... 