![]() Like all refractors, it can be used for all sorts of observations. Newtonian refractor is one of the most popular telescopes on the market. It was invented by Sir Isaac Newton to fight chromatic aberration. The telescope assembly of claim 4, wherein said truss rods are adjustably connected to said annular mounting frame to permit change in the distance of said mounting frame from said base.General properties of Newtonian telescopeĪ Newtonian reflector is the most common and simple type of a reflecting telescope. A decreased focal length is obtained by using the upper most bore in this series in the attachment, and an increase in focal length is obtained by using the lower most bore in this series.ĥ. 5 are shown secured to the intermediate bore in the series of bores 36. The flattened upper ends of a pair of rods are secured to a bracket with bolt 34 passed through bores 32 and screwed into a selected one of the bores 36. The projecting lower end of each mounting bracket contains a series of internally threaded bores 36, spaced from each other in a direction extending axially of the telescope. Rods 24, 26 have flattened upper ends, and bores, such as bores 32, extend through these flattened upper ends accommodating the insertion therethrough of the threaded shanks of bolts 34. 1 and 5, secured as by fasteners 30 to the inner side of annular mounting frame 22, at locations distributed about the frame, are a plurality of mounting brackets 28. More specifically, and referring to FIGS. ![]() G02B23/16- Housings Caps Mountings Supports, e.g. ![]() binoculars Periscopes Instruments for viewing the inside of hollow bodies Viewfinders Optical aiming or sighting devices
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