A Kepler telescope has an objective lens of focal length 120 cm. It is used to observe a star cluster of true angular diameter 4 arcmin (where 60 arcmin = 1 degree); and it is desired that the apparent angular diameter of the star cluster when viewed through the telescope is 10 degrees. Calculate the required focal length of the eyepiece.
A Kepler telescope has an objective lens of focal length 120 cm. It is used to observe a star cluster of true angular diameter 4 arcmin (where 60 arcmin = 1 degree); and it is desired that the apparent angular diameter of the star cluster when viewed through the telescope is 10 degrees. Calculate the required focal length of the eyepiece.
Related questions
Question
Transcribed Image Text:A Kepler telescope has an objective lens of focal length 120 cm. It is used to observe a star
cluster of true angular diameter 4 arcmin (where 60 arcmin = 1 degree); and it is desired that the
apparent angular diameter of the star cluster when viewed through the telescope is 10 degrees.
Calculate the required focal length of the eyepiece.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images
