HISTORY OF THE TELESCOPE -

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Brahe.jpg (337703 bytes)
Tycho Brahe's Great Mural Quadrant, 1582, Uraniborg Observatory, Isle of Hven, Denmark.

Bennett (1987) Figure 12, page 24.

galileo.jpg(127114 bytes)

Two extant refractors by Galileo, courtesy History of Science Museum, Florence, Italy, c. 1615.

Van Helden (1995)

Hevelsex.jpg (253131 bytes)
Johannes Hevelius and his wife Elizabeth Koopman using their large brass sextant, Danzig, c. 1640.

Bennett (1987), Figure 61, page 67.

Longrefr.jpg (339479 bytes)
Johannes Hevelius' 140-foot refractor, Danzig, c. 1640.

Barlow, page 14.

 

 

 

Huygens.jpg (182687 bytes)

Huygens' aerial refractor, Paris, 1655.

Riekher, Figure 2, page 52.

sextant.jpg (221665 bytes)

Flamsteed's equatorial quadrant, by Tompion, London, 1677.

King, Figure 51, page 107.

 

 

shortgreg.jpg (92133 bytes)

Gregorian reflector, speculum metal mirror, Short, Edenborough, 1735.

Brück, page 6.

Portquad.jpg (106406 bytes)

Portable quadrant, Bird, London, c. 1765

Bennett (1987) Figure 96, page 100.

 

 

 

newton.jpg (95905 bytes)

Isaac Newton's speculum metal mirror reflecting telescope, London, 1671.

Van Helden, Galileo Project.

muralquad.jpg (191254 bytes)

Greenwich 8-foot mural quadrant, by Bird, London, 1772.

Bennett (1987), Figure 111, page 116.

 

herschl7f.jpg (168191 bytes)

William Herschel, 7-foot reflector, 6.5-inch speculum metal mirror reflector in an altazimuth stand, Bath England, 1774.

King, Figure 58, page 125.

 

Hersch20.jpg (152900 bytes)

William Herschel, 20-foot reflector, 24-inch speculum metal mirror, in an altazimuth mounting, Bath, England, 1776.

Riekher, Figure 79, page 135.

Palermo.jpg (152565 bytes)

Palermo Altazimuth Circle, Ramsden, London, 1789.

King, Figure 74, page 167.

Hersch40.jpg (215610 bytes)

William Herschel, 40-foot reflector, Slough, England,1788.

King, Figure 59, page 130.

groombr.jpg (215741 bytes)

Groombridge Transit Circle, Troughton, London, 1806.

King, Figure 97, page 235.

reverscl.jpg (138071 bytes)

Repeating circle, Troughton, Lonon, c. 1810.

Bennett, Figure 93, page 97.

Armagheq.jpg (233947 bytes)

Armagh Equatorial, Troughton, London, 1819.

Bennett (1990) Figure 22, page 41.

 

 

Smyth.jpg (272858 bytes)

Smyth's 5.9-inch Dolland refractor on a Tully equatorial mount, London, 1830.

King, Figure 83, page 195.

heliometer.jpg (174774 bytes)

Königsberg heliometer, Fraunhoffer, Munich, 1829.

Riekher, Figure 196, page 182.

 

 

jonesmural.jpg (141648 bytes)

Armagh mural circle, Jones, Belfast, 1831.

Bennett (1990), Figure 40, page 77.

rosse36.jpg (264151 bytes)

William Parsons, Third Earl of Rosse, 36-inch reflector, Birr Castle, Parsonstown, Ireland, 1839. Speculum metal mirror.

King, Figure 88, page 208.

airyaltaz.jpg (195925 bytes)

Greenwich altazimuth, Ransome and May (mounting), Troughton and Sims (optics and circles), London, 1847.

Howse, Figure 47, page 81.

harvard15.jpg (166021 bytes)

Harvard 15-inch refractor, Merz and Mahler, Munich, 1847.

Jones and Boyd, Figure 17, page 66.

Rosse72.jpg (301840 bytes)

William Parsons, Third Earl of Rosse, 72-inch reflecting telescope, Birr Castle, Parsonstown, Ireland, 1845.

Dimitroff and Baker, Figure 110, page 266.

detroit.jpg (139315 bytes)

Detroit Observatory Transit, Pistor and Martin, Berlin, 1855.

Whitsell, 1997.

lassell48.jpg (288891 bytes)

William Lassell, 48-inch speculum metal mirror mounted in an equatorial reflector at Malta, 1861.

King, Figure 94, page 221.

Foucault.jpg (112743 bytes)

Foucault, 13-inch silver-on-glass mirror, mounted in an equatorial reflector at Paris, 1860

Danjon and Couder, Figure 343, page 691.

melbour.jpg (225188 bytes)

Melbourne, Australia, 48-inch speculum metal mirror mounted in an equatorial reflector, Grubb, Liverpool, England, 1867.

King, Figure 109, page 265.

fauthme.jpg (170481 bytes)

Meridian circle, Fauth, Berlin, 1870's.

Young, Figure 20, page 43.

dunechtran.jpg (190280 bytes)

Dunecht transit circle, 8.5-inch objective, Troughton and Simms, London, 1873.

Brück, page 89.

Usno26.jpg (125875 bytes)

US Naval Observatory, 26-inch equatorial refractor, Alvan Clark and Sons, Cambridgeport, Massachusetts, 1877.

Dick and Doggett, page 155.

Lick36.jpg (294359 bytes)

Lick Observatory, 36-inch equatorial refractor, Alvan Clark and Sons, Cambridgelport, Massachusetts, 1887

Danjon and Couder, Plate VI, facing page 256.

Yerkes40.jpg (200028 bytes)

Yerkes Observatory, 40-inch equatorial refractor, Alvan Clark and Sons, Cambridgeport, Massachusetts, 1897.

Dimitroff and Baker, Figure 144, page 266

Mwo60.jpg (201825 bytes)

Mt. Wilson Observatory, 60-inch silver on glass mirror mounted in an equatorial reflector, G. W. Ritchey, 1908.

Danjon and Couder, Plate I, facing page 6.

Mwo100.jpg (340877 bytes)

Mt. Wilson Observatory, the Hooker 100-inch silver on glass mirror mounted an equatorial reflector, G. W. Ritchey, 1917.

Danjon and Couder, Plate VI, facing page 691.

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12 March 1998


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