Tables of the apparent places of the comet of 1661, whose return is expected in 1789. To which is added, a new method of using the reticule rhomboide / By Henry Englefield.

  • Englefield, Henry, Sir, 1752-1822.
Date:
1788
Catalogue details

Licence: Public Domain Mark

Credit: Tables of the apparent places of the comet of 1661, whose return is expected in 1789. To which is added, a new method of using the reticule rhomboide / By Henry Englefield. Source: Wellcome Collection.

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    VI PREFACE. Thofe who wifh for a particular account and hiftory of the Comet in queftion, will find it in Mr. Pingre’s Treatife above referred to, or in the Cometographie of that excel- lent author: There is alfo a moft ingenious Memoire on this fubjeft publifhed by Monf. Mechain, in the Hiftoire de L'Academie des Sciences. To the Tables of the Comet I have fubjoined a method of obferving with the Reticule Rhomboide, which I have long praftifed with much fuccefs, and indeed have reafon to think as accurate as the ufual method of ufing it. This may be of peculiar ufe to perfons who may fee the comet in the fouthern hemifphere, in the courfe of a voyage, and who, with a telefcope and tolerable watch, may at once make moll valuable obfervations, if they are but for a day or two at land. TABLES