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6. What do you think happens to the image when the object distance is less than the focal length of the lens? Sketch the ray diagram. Part III. Astronomical telescope: Analyze the diagram in Fig. 6, and answer the questions: 1. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the objective of the telescope. 2. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the eyepiece (refer to the Question 6 in the previous section). 3. Determine the magnification of your optical device as M = - fo /fe = __________ What is the meaning of negative magnification? Conclusion: Discuss your observations, and possible sources of errors. What can be done to obtain a more powerful telescope?

          6. What do you think happens to the image when the object distance is less than the focal length of the lens? Sketch the ray diagram.

Part III. Astronomical telescope:

Analyze the diagram in Fig. 6, and answer the questions:

1. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the objective of the telescope.

2. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the eyepiece (refer to the Question 6 in the previous section).

3. Determine the magnification of your optical device as M = - fo /fe = __________
What is the meaning of negative magnification?

Conclusion: Discuss your observations, and possible sources of errors.
What can be done to obtain a more powerful telescope?

6. What do you think happens to the image when the object distance is less than the focal length of the lens? Sketch the ray diagram.

Part III. Astronomical telescope:

Analyze the diagram in Fig. 6, and answer the questions:

1. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the objective of the telescope.

2. Characterize the image (real or virtual, upright or inverted, enlarged or reduced in size) produced by the eyepiece (refer to the Question 6 in the previous section).

3. Determine the magnification of your optical device as M = - fo /fe =
What is the meaning of negative magnification?

Conclusion: Discuss your observations, and possible sources of errors.
What can be done to obtain a more powerful telescope?

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