The Fuertes 30 cm telescope has a focal length of 450 cm. The moon subtends 1/2 degree on the sky. How big would you expect the image size of the moon to be in the focal plane of the Fuertes telescope?
The Fuertes 30 cm telescope has a focal length of 450 cm. The moon subtends 1/2...
A Galilean telescope is made with a 40 cm focal length objective lens and a -10 cm focal length eyepiece. As is typical, the separation between the lenses is the sum of the focal lengths, i.e. 30 cm. Usually this telescope would be used to view far distant objects, but suppose the object viewed is only three focal lengths (120 cm) distant from the objective lens (a) On the figure above, sketch the principal rays that determine the size and location...
The Moon was photographed with a telescope that has a primary mirror with diame- ter - 20 cm and focal length - 150 cm. To get a good photograph (neither over- nor a) What should the exposure time be for a good exposure, using a telescope with (b) What is the size of the image of the Moon in both cases? If you take the photos under-exposed) required an exposure time of 0.1 s mirror diameter 15 cm and focal...
The Moon was photographed with a telescope, the objective of which had a diameter of 20 cm and focal length of 150 cm. The exposure time was 0.1 s. (a) What should the exposure time be, if the diameter of the objective were 15 cm and focal length 200 cm?(b) What is the size of the image of the Moon in both cases?
The eyepiece of a refracting telescope has a focal length of 9.00 cm. The distance between objective and eyepiece is 1.8 m, and the final image is at infinity. What is the angular magnification of the telescope?
The telescope at a small observatory has objective and eyepiece focal lengths respectively of 19.8 m and 12 cm. If this telescope is used to view a 1480 m diameter lunar crater on the surface of the moon 3.77 108 m from the surface of the Earth, determine the following. (a) angular magnification of the telescope -165 Your answer is correct. (b) size of the first image -7.8e-5m Your answer is correct. (c) length of the barrel of the telescope...
The focal length of the objective of a telescope is 75.0 cm. While the eyepiece has a focal length of 6.00 cm, what is the magnifying power of this telescope? The answer is 12.5 I just need the work.
Part 1 Two converging lenses, A and B, have a focal length of 15
cm and 30 cm respectively. If an object is placed 25 cm in
front
of lens A then how far should lens B be placed from lens A in
order to produce a magnified real image? My di1 was 37.5 cm and d01
was set at 25 cm.
2. How would you position the two lenses from problem 1 in order for them to function as...
Two lens with different focal length are made as a telescope. If the magnification is 16 and the length of telescope is 85 cm, how much is the focal length of eye lens?
What is the angular magnification of a telescope that has a 125-cm focal length objective and a 2.30-cm focal length eyepiece?
Galileo's Telescope Galileo's first telescope used a convex objective lens with a focal length f=1.7m and a concave eyepiece, as shown in the figure. (Figure 1)When this telescope is focused on an infinitely distant object, and produces an infinitely distant image, its angular magnification is +3.0. A. What is the focal length of the eyepiece? in cm b. How far apart are the two lenses?