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Originally Posted by mickoking
G,day paul
Finderscopes have inverted images because that is the image a simple refractor makes. To make the image the correct way requires an extra lens which is not important in astronomy, the extra lens would add cost to the finder and rob it of some precious light ( the more lens elements you have the dimmer the image becomes). However you can get correct way round finders but you get used to normal finders soon enough.  |
Thank you for that explaination. I am not concerned by the inverted image, it's ok with me. I was just interested to know how it works.