How is a refracting telescope used?

Refracting telescopes. Commonly known as refractors, telescopes of this kind are typically used to examine the Moon, other objects of the solar system such as Jupiter and Mars, and binary stars.

How does a refracting telescope work quizlet?

A refracting telescope works by using a convex lens at each end of a long tube. Light enters the telescope through the large objective lenses on top. The objective lens focuses the light at a certain distance from the lens. The major difference is that a refracting telescope uses convex lens to focus light.

How does a refracting telescope create an image?

A refracting telescope uses a combination of lenses to produce an image of a distant object, e.g. a star or planet. Basically the objective lens produces an image of a distant object at its focus and the eyepiece lens magnifies this image.

How does a refracting telescope collect light?

Light enters a refracting telescope through a lens at the upper end, which focuses the light near the bottom of the telescope. An eyepiece then magnifies the image so that it can be viewed by the eye, or a detector like a photographic plate can be placed at the focus.

How does a Galileo telescope work?

In Galileo’s telescope the objective lens was convex and the eye lens was concave (today’s telescopes make use of two convex lenses). Galileo knew that light from an object placed at a distance from a convex lens created an identical image on the opposite side of the lens.

What determines a refracting telescope magnifying power?

The magnifying power of a telescope is determined by the focal length of the objective. The longer the focal length, the more the magnification is. The intermediate image produced by the objective lens has a size , where is the focal length of the objective lens and is the angular size of the source.

How are refracting and reflecting telescopes different?

Refractor telescopes use specialized lenses that make them a favorite for deep space objects like galaxies and nebulae. Reflector telescopes are more popular with larger and brighter objects like the Moon and planets because they use mirrors that provide more sensitivity to all wavelengths.

What is it meant by reflecting and refracting telescopes?

Reflecting telescopes use mirrors to gather the light. Refracting telescopes use lenses. There are different kinds of reflectors, but in general the refractors all follow the same basic design.

How does a refracting telescope differ from a reflecting telescope?

In summary, a refracting telescope uses a lens, sort of like those in magnifying glasses, and a reflecting telescope uses a mirror. There are also the catadioptric telescopes, which use a combination of lenses and mirrors.

How does Galileo’s refracting telescope work?

In Galileo’s version, light entering the far end (1) passed through a convex lens (2), which bent the light rays until they came into focus at the focal point (f). The eyepiece (3) then spread out (magnified) the light so that it covered a large portion the viewer’s retina and thus made the image appear larger.

What is reflecting and refracting telescope?

A reflecting telescope, the main component is a mirror that bounces the light rays and then focuses it into a small area. And the refracting telescope uses lenses to focus the light rays as it travels towards the other end of the telescope.

How does the Keplerian telescope work?

A Keplerian telescope has a converging lens eyepiece and a Galilean telescope has a diverging lens eyepiece. The distance between the image and the eyepiece is the sum of the focal lengths of the two lenses. We use a telescope to gather light and to increase the angle that a distant object subtends at the eye.