During the daytime, obtain a telescope and several eyepieces of differing focal lengths. If you can determine the focal length of the telescope’s objective lens or mirror (often printed on it), calculate and record the magnifying power for each eyepiece. Focus the telescope on some familiar object, such as a distant lamppost or tree. DO NOT FOCUS ON THE SUN! Looking directly at the Sun through a telescope will cause blindness. Describe the image you see through the telescope. Is it upside down? How does the image move as you slowly and gently shift the telescope left and right or up and down? Examine the distant objects under different magnifications. How does the field of view change as you go from low magnification to high magnification?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here