Question

An
astronomical telescope is being used to examine a relatively close
object that is only 126.00 m away from the objective of the
telescope. The objective and eyepiece have focal lengths of 1.120
and 0.0930 m, respectively.

Noting that the expression M = - fo/fe is no longer applicable
because the object is so close, use the thin-lens and magnification
equations to find the angular magnification of this
telescope.

Answer #1

The image formed by an astronomical telescope of an object 20m
from the
objective (f0= 4 m) is at 30cm from the eyepiece (fe = 60cm).
Find the overall
transverse magnification of the scope. What is the magnifying
power of the
scope?

w5a) Calculate the position of the final image in the
Astronomical Telecope with the data provided. Estimate the position
of the first image, realizing that the object is very far away.
Then, use the Thin-Lens Formula to calculate the position of the
final image from the second lens.
b) Compute the magnification of this telescope. as the image erect
or inverted? What value indicates this orientation?
Objective:
300mm converging at 79.9cm
Eyepiece:
50mm converging at 44.2cm

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