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Celestron 102ED refractor telescope When using an Orion 35mm Ultrascopic eyepiece racking the focuser all the way forward still cannot bring a star into focus just almost what is the problem?
Wiki User
∙ 14y ago
I've had this problem with a Skywatcher 120mm refractor and Antares SWA eyepiece. I've heard that there are low-profile 1.25" adapters that you can use with 2" diagonals to give you more inward travel. I'm still searching for one myself. Also some people say aftermarket focusers (ex. Moonlite) may solve this problem.
Wiki User
∙ 14y ago
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What telescope has an eyepiece lens and a mirror?
The telescope described is an optical telescope. If the primary optic is a mirror, it's a reflector, and it the primary optic is a lens, it's a refractor.
What telescope uses an eyepiece and an objective lens?
Practically all telescopes which use lenses, normally the refracting type. the Reflector use objective Concave Mirrors, but even these need eyepieces or finder scopes.
Will the celestron powerseeker 70az telescope be able to see a solar eclipse?
You don't need ANY kind of telescope to see the solar eclipse. If you have a telescope, and _IF_ you have a projection eyepiece that will project the Sun's image onto the screen, then you can use it - but the problem with viewing the Sun is more in decreasing the intensity of the image rather than magnifying it.
What type of lens are used in telescope?
i do not know and i don't really care no ifence
Why do telescopes for astronomy not have prisms?
Some telescopes do. These are usually at the eyepiece end of a refractor telescope (i.e. one with the lens at the top and you look through the bottom end. The prism bends the light at right angles so you don't get a stiff neck. The prism makes viewing more comfortable. I use one on my telescope.
What telescope has an eyepiece lens and a mirror?
The telescope described is an optical telescope. If the primary optic is a mirror, it's a reflector, and it the primary optic is a lens, it's a refractor.
What telescope uses an eyepiece and an objective lens?
Practically all telescopes which use lenses, normally the refracting type. the Reflector use objective Concave Mirrors, but even these need eyepieces or finder scopes.
Will the celestron powerseeker 70az telescope be able to see a solar eclipse?
You don't need ANY kind of telescope to see the solar eclipse. If you have a telescope, and _IF_ you have a projection eyepiece that will project the Sun's image onto the screen, then you can use it - but the problem with viewing the Sun is more in decreasing the intensity of the image rather than magnifying it.
What are some types of telescopes?
there are two main types, all though there are five in total. the first one is called a refractor telescope, which uses a lense to bend the light into an eyepiece. these tend to fog up in winter time but give accurite pictures. a reflector telescope uses two mirors to reflect the light into the eyepiece. you can make these as big as you want and they dont fog up, but the immage can be distorted if the mirror angle is off by the slightest degree. of the two, i would say that the reflector is better than the refractor.there is a limmit to the size of the refractor.
Does a eyepiece of a telescope have a lens?
A telescope eyepiece usually has 2 lenses in an astronomical telescope, and it is designed to give a magnified view of the virtual image produced at the focal point of the main lens.
What type of lens are used in telescope?
i do not know and i don't really care no ifence
Why do telescopes for astronomy not have prisms?
Some telescopes do. These are usually at the eyepiece end of a refractor telescope (i.e. one with the lens at the top and you look through the bottom end. The prism bends the light at right angles so you don't get a stiff neck. The prism makes viewing more comfortable. I use one on my telescope.
What does the simplest optical telescope contain?
It contains an objective lens and a lens in the eyepiece of the telescope.
Are there any problems in using a Reflector Telescope?
Generally instead of looking along the axis of the telescope as is done with a refractor sighting the object to view is more difficult since you view the eyepiece at right angles to the main axis of the reflector. The main way to overcome this is to make a hole in the centre of the mirror as is done in the Hubble telescope and view the image from behind the mirror. This is called a Cassegrain configuration.
What is the power of the eyepiece?
The magnification, or power, at which a telescope is operating is a function of the focal length of the telescope's main (objective) lens (or primary mirror) and the focal length of the eyepiece employed.
Where did Galileo invent the telescope?
Galileo didn't actually invent the telescope, though he was one of the first to use it for astronomical observations. At the time he constructed his first telescopes, he was teaching at the University of Padua in Italy.
In what circumstance would the eyepiece not be used?
It all depends on what one is doing with the telescope. To gaze at the sun, the eyepiece is not used and in astrophotography, the eyepiece may be used but not always.
