Newtonian Reflector


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Newtonian Reflector

 

a type of reflecting telescope in which the rays reflected by the primary parabolic mirror are intercepted by a plane mirror and reflected to the side of the telescope tube, where the light-receiving equipment is located. Used only in small telescopes, it was designed by I. Newton around 1670.

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An altazimuth variation that's popular on Newtonian reflectors of all sizes (from $200 starter scopes to 36-inch monsters) is the Dobsonian mount.
Buying the best telescope: We all want the best buy for our budget. Here's what you need to know to acquire a telescope that can last a lifetime
But when I mounted the camera on my 12 1/2-inch f/4 Newtonian reflector with its steeper light cone the image vignetted considerably.
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This versatile and portable telescope is a 4.25-inch (105-mm) Newtonian reflector with a focal length of 445 mm (f/4).
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It was an Edmund 4 1/4-inch Newtonian reflector, a popular model for many of us starting in astronomy in those days.
Across the Zenith: Now is the time to honor your astronomical resolutions
With a refractor or a Newtonian reflector, the focal length is approximately the same as the tube length.
Be scope savvy: looking for that first telescope, or thinking of moving up to a better one? Here's what you need to know as you ponder the vast selection available to you
Caroline Herschel discovered NGC 7789 in October 1873 with a 4.2-inch Newtonian reflector made for her by her brother William.
The Queen's Finest: Look to Cassiopeia for her varied collection of celestial treasure
Here is a 4.5-inch (114-mm) Newtonian reflector with a focal length of 910 mm (f/8) that comes with a German equatorial mount and a gold-anodized aluminum tripod.
Telescope buyer's guide: our guide to 82 refractors, reflectors, and catadioptrics lets you make an intelligent, scope-by-scope comparison
Many of these optical marvels command prices surpassing a decent 8-inch Newtonian reflector complete with an equatorial mount.
Eyepieces for planetary observing: Jupiter and Saturn are easy to observe now--but what eyepiece type will give the best views?
Extraordinary detail is visible on Jupiter's cloudtops in this tricolor CCD image obtained September 4, 1999, with a 10-inch f/8 Newtonian reflector from Di Sciullo's home in Coconut Creek, Florida.
Our solar system: some of the most breathtaking images of our universe are of things visible with only a small telescope or even with the naked eye. The following is a sample of the wonders that one can behold within our own solar system
I had the opportunity to use both eyepieces on several large Dobsonians, as well as my own 121/2-inch Newtonian reflector. Needless to say, the views are impressive.
Explore scientific's 92[degrees] long eye relief eyepieces
The popular Newtonian reflector type is not particularly well suited for daytime use.
Buying a Telescope: new choices for a new millennium: take the worry and the woe out of the big decision with our guide to buying the telescope that's best for you
This photographically fast Newtonian reflector is built around a 150-mm parabolic primary mirror manufactured from B270 glass that reaches thermal equilibrium quickly.
Budget astrograph

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