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Irish people / Armagh Observatory / John Thomas Romney Robinson / William Frederick Archdall Ellison / Dunsink Observatory / John Louis Emil Dreyer / Eric Mervyn Lindsay / Thomas Earnshaw / Edward Troughton / Fellows of the Royal Society / Astronomy / Science


adjust the instrument for proper use. By 1797, Dr Hamilton was worried about the instrument’s accuracy because of the errors introduced by mechanical flexure of the telescope and mounting, as well as those caused by
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Document Date: 2012-04-16 04:57:00


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