Question

difference between reflecting telescope and refracting telescope.

Plzz answer in points ​

Answer 1

Answer:

The distinction between the two is in how they manipulate the incoming light in order to magnify the image. Also,

1.The main component in a reflecting telescope is a mirror where the light will bounce off and is then focused into a smaller area. In contrast, a refracting telescope uses lenses that focus the light as it travels towards the other end.

2.One limitation of a refracting telescope is the need to produce glass lenses that are absolutely devoid of bubbles or any foreign materials.In comparison, the mirrors needed in a reflecting telescope are much easier to produce as only the reflecting surface needs to be absolutely perfect.

3.Another key difference between them is that we can easily make affordable reflecting telescopes. It becomes more expensive and difficult to create large, refracting telescopes.

Explanation:

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Answer 2

Answer:

Explanation:

1. The job of the objective lens, opposite the eyepiece end, is to gather the light coming from a distant object, such as a star, and bend it into a single point of focus.
2. A second lens’ (the eyepiece) job is to enlarge that focused image for our retina; it acts as a magnifying glass.
3. Think of the focused light coming in from the first lens as a bug, and think of the eyepiece magnifier as a basic magnifying glass that we look at the bug with. That’s it in a nutshell.
4. Reflector Telescope: A reflector telescope uses two mirrors instead of two lenses.
5. Isaac Newton developed this telescope to combat chromatic aberration (a rainbow seen around some objects viewed with a refractor telescope).
6. A mirror used to gather light doesn’t suffer from this effect.
7. Light from an object enters the telescope tube and is reflected off a curved mirror at the end of the tube.
8. A second, small, flat mirror in the middle of the tube reflects this image to the eyepiece.
9. There are potential problems associated with the mirrors. Firstly, some light is always lost in the reflection; good quality telescopes can usually gather 90% of the light coming in. Secondly, the mirror might not be a perfect curve, so the image being reflected will not come to a perfect point. This results in a dragging effect; a point could be seen as a line or cross.
10. Also, the mirrors need to be cleaned and realigned from time to time.

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