Lectures on Practical Astronomy and Astronomical Instruments (1879)
Challis, James Rev. · Deighton, Bell and Co. (Cambridge) · leaf 141
to that for d, +g given above. 121. The subjoinved Table of the several intervals of the wires from the mean of all for the case of an equatorial star, and for given declinations of Polaris and 6 Urse Minoris, was formed by calculating according to the rules indicated in Arts. 116, 118—120. The… … The intervals (d,) for Polaris corresponding to the declina- tion 88° 32’ are each the mean of the values derived by the process stated in Art. 118, from the eleven intervals given by the obseryations, and the intervals (d,’) for 6 Urse Minoris cor- responding to the declination 86° 36’ were…
Book · Astronomy
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