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The plossl design is a very well designed eyepiece, I would highly recommend them if you are using a Newtonian telescope with a very short focal length. Plossl's are very costly to make and hence a lot more expensive than the other designs mentioned so far.
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www.astro-tom.com/telescopes/eyepieces.htm
www.astro-tom.com/telescopes/eyepieces.htm
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I have the eccentric habit of not using the word "power" to refer to the magnification of a telescope/eyepiece combination. "Power" conveys the impression that more magnification is always ... But at the same magnification, different eyepiece types have dramatically different fields of view -- expensive modern designs,
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www.observers.org/beginner/eyepieces.freeman.html
www.observers.org/beginner/eyepieces.freeman.html
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Opticians have been designing eyepieces for more than 300 years. Many classic designs (Huygens, Ramsden, Kellner, Orthoscopic, Plossl) are more than a century old. There are also some new, proprietary eyepiece designs that offer wider fields, ... With an f/10 telescope, any well-made eyepiece will give a sharp image. With an f...
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www.actonastro.com/eyepieces.htm
www.actonastro.com/eyepieces.htm
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The biggest drawback to the Newtonian design is the placement of the eyepiece. In smaller scopes, this isn't much of ... Mounts which are desirable for one type of telescope may create an intolerable problem when used with another type of telescope. There have been many designs offered. Each has good points and drawbacks.
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www.frostydrew.org/observatory/courses/scopes/booklet.h...
www.frostydrew.org/observatory/courses/scopes/booklet.htm
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The magnification of a telescope is determined by dividing the focal length of the telescope by the focal length of the eyepiece. Thus, if a telescope has a focal length of 1200 mm, ... A very interesting history of eyepiece designs is available at the web site of the Brayebrook Observatory, which also has a number of...
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www.quadibloc.com/science/opt04.htm
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Let's take a look at few things to consider before choosing a telescope eyepiece and basic eyepiece designs... Why are there so many different eyepieces? The answer is magnifying power.
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www.optcorp.com/category.aspx?uid=30
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Contains the info you need to compare how eyepieces from all the major manufacturers will perform in your telescope. ... [ Home | Eyepiece Specs | Calculator | Formulas | Reviews | Barlows | Manufacturers | Links | Gallery ]
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www.klhess.com/telespec.htm
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Submitted: Sat Sep 06 2003; Rating: 0.00; Votes: 0; CT: Astronomy: Amateur: Telescope Owner Resources: All About Eyepiece Designs; ... Top > Astronomy > Amateur > Telescope Owner Resources > All About Eyepiece Designs...
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www.ufoseek.com/Astronomy/Amateur/Telescope_Owner_Resou...
www.ufoseek.com/Astronomy/Amateur/Telescope_Owner_Resources/All_About_Eyepiece_Designs_L126464/
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The main function of an eyepiece is to magnify the image that is formed by the telescope optical system, Huyghens These are a very ... On the other hand, in most eyepiece designs, short focal lengths (less than 6mm) suffer from impracticably small lenses, which require you to position your eye impossibly close to the lens.
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www.aoe.com.au/eyepiece_types.html
www.aoe.com.au/eyepiece_types.html
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