Ray diagrams for an astronomical telescope

In summary, an astronomical telescope with a focal length of 40cm for the objective lens and 10cm for the eyepiece lens is constructed using two convex lenses. Ray diagrams are drawn for three different distances between the lenses (50cm, greater than 50cm, and between 40cm and 50cm). The telescope is used to observe objects at infinity.
  • #1
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Homework Statement


An astronomical telescope is constructed using 2 convex lenses. The objective lens is of focal length 40cm and eyepiece lens is of focal length 10cm. Let d be the distance between the 2 lenses. Draw ray diagrams for the following situations.
1.When d=50cm
2.When d>50cm
3.When 40cm<d<50cm
The telescope is used to observe objects at infinity.

Homework Equations





The Attempt at a Solution


In each situation I drew the objective lens's incident ray and the refracted ray up to its focal plane. But i do not understand how to complete them.
raydiagrams_zps05303d3a.jpe
 
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  • #2
The objective lens creates an image (what kind?) where? So the eyepiece should be positioned where to create parallel rays for the eye to focus on its retina?
 
  • #3
The image from the objective lens will be the object for the eyepiece. Using this object, draw the rays to form the image from the eyepiece.
 

What is a ray diagram for an astronomical telescope?

A ray diagram for an astronomical telescope is a visual representation of how light rays pass through the various lenses and mirrors in the telescope, allowing us to see an enlarged and clearer image of distant objects in space.

What are the main components of a ray diagram for an astronomical telescope?

The main components of a ray diagram for an astronomical telescope include the objective lens, the eyepiece lens, and the focal points of each lens. The objective lens collects and focuses the light from the object being observed, while the eyepiece lens magnifies the image for our eyes to see. The focal points of each lens determine the distance between the lenses and the final image produced.

How does a ray diagram for an astronomical telescope work?

A ray diagram for an astronomical telescope works by using lenses and mirrors to manipulate the light rays from a distant object. The objective lens collects the light and focuses it at its focal point, which is then reflected by a concave mirror to the focal point of the eyepiece lens. This creates a magnified and inverted image for the viewer to see.

What are the types of images produced by a ray diagram for an astronomical telescope?

The two types of images produced by a ray diagram for an astronomical telescope are real and virtual images. Real images are produced when the light rays converge at a point, and can be projected onto a screen or captured by a camera. Virtual images are produced when the light rays only appear to converge at a point, and cannot be projected or captured.

How does the placement of lenses affect the image produced by a ray diagram for an astronomical telescope?

The placement of lenses in a ray diagram for an astronomical telescope affects the magnification and orientation of the final image. Moving the lenses closer together will increase the magnification, while moving them further apart will decrease it. In addition, the orientation of the final image can be changed by reversing the placement of the lenses.

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