Classic Telescopes A Guide to Collecting, Restoring, and by Neil English

By Neil English

Vintage telescopes are of curiosity to novice astronomers for a number of purposes. There are the committed creditors, yet there also are many amateurs who love the nostalgia they encourage. those telescopes «feel» varied from any modern telescope and maybe have a different skill to reconnect the landlord to a bygone age of craftmanship. This e-book takes a glance at conventional telescopes equipped by way of the good software makers of the 18th and nineteenth centuries, relatively the dynastic telescope makers, together with Dollond, Alvan Clark, Thomas Cooke & Sons, and Carl Zeiss. additionally incorporated are lesser luminaries reminiscent of John Brashear, John Calver, William Wray, Henry Fitz, and William Henry Mogey.

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In diameter and were given to the very capable London optician Charles Tulley (active 1780–1824), who combined it with fine English crown glass to produce a telescope that was described as “trifling” in size but excellent in performance. 22 2 A Yorkshireman Makes Good Indeed, Tulley apparently received even larger flint disks from Guinand. 25 in. in aperture which he attempted to achromatize with a similar-sized plate glass. The resulting mating was poor. 8 in. clear aperture and 12 ft focus. He then invited George Dollond and Sir John Hershel, among others, to observe Saturn, Jupiter, the Virgo ‘nebulae’ and a variety of difficult double stars through it.

From 1829 to 1836, he pursued a teaching career as an assistant schoolmaster and private tutor. And it was during this time that he met his future wife, Hannah Milner. Cooke’s interest in practical optics impelled him to begin work on his first telescope, one of the lenses of which he ground from the bottom of a whiskey tumbler and mounted the objective inside a tin tube that he soldered together from scrap N. 1007/978-1-4614-4424-4_2, © Springer Science+Business Media New York 2013 19 20 2 A Yorkshireman Makes Good metal.

Cooke, like the spot he discovered, inexplicably disappeared after his death, and, despite diligent attempts to locate it, we are still none the wiser concerning its current whereabouts! (Fig. 6). Hay wrote a wonderful, non-technical book for the newly minted amateur astronomer, Through My Telescope, in which his great charm and insight still shines through. A timeless classic if ever there was one! (Fig. 7). 34 2 A Yorkshireman Makes Good Fig. 5 The fully restored 8-in. f/16 Fry telescope, at Mill Hill Observatory, London Modern Perceptions I have spoken elsewhere of experiences with a couple of Cooke refractors, particularly the 10-in.

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