Refracting
51Mills Observatory — Location …
52Eye — The organ of sight. The word eye come from the Teutonic auge. The eye has a number of components. These include the cornea, iris, pupil, lens, retina, macula, optic nerve and vitreous. The cornea is the clear front window of the eye that… …
53angle — The meeting point of two lines or planes; the figure formed by the junction of two lines or planes; the space bounded on two sides by lines or planes that meet. For angles not listed below, see the descriptive term; e.g., axioincisal, distobuccal …
54Craig telescope — Location Wandsworth Common, London, Wavelength Visible light Built 1852 First light 1852 T …
55Optics — For the book by Sir Isaac Newton, see Opticks. Optical redirects here. For the musical artist, see Optical (artist). Optics includes study of dispersion of light. Optics is the branch of …
56Astrophotography — An image of Orion s Belt composited from digitized black and white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between… …
57Yerkes Observatory — Infobox Observatory name = Yerkes Observatory caption = Yerkes Observatory, January 2006. organization = University of Chicago|code=754 location = Williams Bay, Wisconsin, USA coords = coord|42|34|13|N|88|33|22|W| altitude = 1050 feet (334 m)… …
58Lick Observatory — Infobox Observatory name = Lick Observatory caption = The main observatory building and the North (small) Dome, home of the Nickel Reflector organization = University of California|code=662 location = San Jose, California, USA coords =… …
59Alvan Clark — Infobox Scientist name = Alvan Clark image width = caption = birth date = birth date|1804|3|8|mf=y birth place = Ashfield, Massachusetts death date = death date and age|1887|8|19|1804|3|8|mf=y death place = residence = citizenship = nationality …
60Eyepiece — For the device for looking through a camera, see viewfinder. A collection of different types of eyepieces. An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes. It is… …
