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Anonymous Posted on Oct 25, 2010

WE have an Australian Geographic Telescope Model 60800. We can look through the telescope prior to putting the lens on and everything is the right way up. As soon as we put the lens on, everything is upside down. This telescope purchased new from Australian Geographic 2 years ago didn't come with a manual. Can you help solve our problem? Thanks.

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Steve B

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  • Expert 227 Answers
  • Posted on Oct 25, 2010
Steve B
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Joined: Oct 06, 2010
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Without a porro-prism or a erect image diagonal, all telescopes show a reversed image. This is normal. There is no up/down in space. If you want to use the scope for terrestrial viewing, see first sentence. Do not use a erect image accessory for astronomy since it reduces the contrast.

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