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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 68

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time for sextant work is of course on a clear, calm night such as we often have in mid-summer. Second:- Be sure that everything is ready to begin observing with. See that the sextant is in good adjustment and that the object and eye glasses of the telescope are perfectly clean. See also that the surface of the mercury is free from dust and dirt and that the basin is in the proper position. If the "house" is to be used, clean the glass thoroughly. Have things that you are going to use close by so that you can put your hand on them when wanted and lose no time in hunting. Third:- Know your method thoroughly; understand exactly what you are going to do, then go ahead! An inexperienced observer should not
 
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