Gregorian reflecting telescope of 1 1/4 inch aperture by Watkins

Made:
1747-1784 in London
maker:
Francis Watkins
Gregorian reflecting telescope of 1 1/4 inch aperture by Watkins

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

License this image for commercial use at Science and Society Picture Library

License

Science Museum Group
© The Board of Trustees of the Science Museum

Gregorian reflecting telescope of 1 1/4 inch aperture by Watkins, London, on an altazimuth mounting with a lockable sharksin case forming a box foot stand.

Details

Category:
Astronomy
Object Number:
1938-720
Materials:
brass, wood, sharkskin and speculum
Measurements:
length 200 mm
width 100 mm
height 240 mm
type:
telescope - gregorian and telescope - reflecting
credit:
Mr Thomas H. Court

Related Objects

Portion of the Moon (rough crater region above Mare Nubium) G.W. Ritchey and by F.R. Sullivan, with 40-inch Yerkes visual refractor colour screen, and isochromatic plate, 1901, November 21, age about 10 1/2 days, term about -38[o]m., exposure, 1 sec.

Portion of the Moon; crater region above Mare Nubium

Enlarged photographs of the planet Mars
Glass positive:- E.E. Barnard, Mount Wilson Observatory, 1911, November 19, 60-inch Reflector, equivalent focal length, 100ft

Glass positive:- E.E. Barnard

Dutch celestial globe, 1625
Engraving of the near side of the moon by J. Russell R.A., London, England, 1806. Print based on observations made by Russell at the telescope when the moon was fully illuminated.

Engraving of the near side of the moon by J. Russell R.A.

SEC vidicon camera tube - identical to one used in IUE (international ultra-violet explorer) satellite