A Keplerian telescope has a main lens with diameter 10 cm, focal length fo = 90 cm, andan eyepiece of focal length fe = 12 mm. It is then modified by inserting a biconcave lens(called a Barlow lens) of focal length fB = -60 mm, at a location 864 mm to the right of themain lens. The eyepiece is then moved until its front focal point is at the new image, formedby the main lens and the Barlow lens combined.This system observes a globular star cluster of angular diameter 0.1 degrees. Calculate:i) The linear diameter of the real image of the star cluster after the Barlow lens.ii) The angular magnification of the system.

Step 1:Given Data:Diameter of main lens: 10cmFocal length of main lens (Objective lens)…

Answered: A Keplerian telescope has a main lens…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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