A Finderscope is a low-power telescope with a relatively large field of view. It has the same line of sight as the main telescope, helping the main telescope easily find the target. One of the differences between a telescope and a finder is that the finder has crosshairs to aid in accurately pointing at a target. You can see the crosshairs and the object together clearly through the finderscope. If you add crosshairs to the telescope, can you see it as in a finder? If so, where should you put the crosshairs?
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PAPERS| November 01 2021
Where Are the Crosshairs in the Finderscope? Another activity using a cardboard telescope
Phys. Teach. 59, 656–658 (2021)
Jeongwoo Park, Hee Kyung Park; Where Are the Crosshairs in the Finderscope? Another activity using a cardboard telescope. Phys. Teach. 1 November 2021; 59 (8): 656–658. https://doi.org/10.1119/10.0006922
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