Herons Observatory - some dialogue from History of the Town of - TopicsExpress



          

Herons Observatory - some dialogue from History of the Town of Greenock Part 14: A very agreeable and picturesque walk turns to the right at the low Innerkip toll-bar; and, after ascending to the elevation above Caddel Hill, the residence of Alexander Thomson, Esq., it commands a beautiful prospect. Immediately below, and on a fine rising ground, stands Mr. Herons Observatory, which was erected in 1819, for the purpose of accurately finding the time. This was in some measure indispensable; for as chronometers were becoming more generally in use among the Clyde navigators than heretofore, it consequently became a matter of importance to have a suitable building, with proper instruments, in order that the rate of going of these valuable machines might be determined in the most perfect manner. Considering this erection to be an object of public utility, and intimately connected with the Commercial interests of the port, the late Sir Michael Shaw Stewart granted to Mr. Heron a suitable piece of ground, free of the customary fen-duty, and subject to only a small rent. The building is of an oblong octagonal form, and has two apartments. The eastern one is the observing-room; in the middle of which stands one of the pillars that formerly supported the ancient West Quay Shade, but which now carries a transit instrument. Besides the transit and a circle—both made by that unrivalled artist, Troughton—the observing- room contains a sidereal regulator ; a three-and-a-half feet achromatic, and a six feet Newtonian telescope; a cornet-glass, wind-dial, and all the usual appurtenances of a properly furnished observatory. The regulator has an escapement of a peculiar construction, which, as it offers up resistance to the ascent of the pendulum, may be reckoned perfectly detached. Our celebrated townsman, James Watt, when he last visited Greenock, examined it, and pronounced it to be different from any he had seen. The western apartment is occupied as a library and sitting-room. The building was scarcely completed when the comet of 1819, which excited so much attention, appeared. Observations were made here on it, as early as at the great observatories of Europe. These were continued as long as it was visible, and the results appeared from time to time in our Local Journal. Since then, the ordinary work of the observatory has been carried on with little interruption.
Posted on: Wed, 26 Mar 2014 07:27:30 +0000

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