Addresses Delivered at the Triennial Celebration ..., Volumes 18-231879 |
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Page 43
... Error in collimation . This error is due to the telescope not being perpendicular to the axis on which it turns ; and causes the tele- scope to describe a small circle of the heavens to one side of the meridian . The correction for this ...
... Error in collimation . This error is due to the telescope not being perpendicular to the axis on which it turns ; and causes the tele- scope to describe a small circle of the heavens to one side of the meridian . The correction for this ...
Page 44
... error of pivots , the error of level and the error of azimuth , and have left only what is , in a certain sense , analogous to the error of collimation in a transit instrument , the characteristic of both errors being that the telescope ...
... error of pivots , the error of level and the error of azimuth , and have left only what is , in a certain sense , analogous to the error of collimation in a transit instrument , the characteristic of both errors being that the telescope ...
Page 34
... error of 3.6 miles . We must look out for an error of 3.6 × 3.2 = 11.5 miles ( when 3.2 is a factor of safety deduced from the discussion ) , and the amount of his error may prove to be at least twice this quantity of 21 miles , all on ...
... error of 3.6 miles . We must look out for an error of 3.6 × 3.2 = 11.5 miles ( when 3.2 is a factor of safety deduced from the discussion ) , and the amount of his error may prove to be at least twice this quantity of 21 miles , all on ...
Contents
SUBJECT | 4 |
Discussion on the paper presented at | 11 |
A WELLINGTON | 55 |
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