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Conversion of a 400 mm f5.6 old camera lens into a 70 mm f5.6 telescope - ATM, Optics and DIY Forum - Cloudy Nights
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How to convert your Nikon lens into a telescope or a microscope (Nikon lens scope converter) - Nikon Rumors
![Panagiotis Xipteras on Twitter: "How to convert your lens to a spotting # scope. Image:#Samyang 800mm #catadioptric #lens on #lens2scope converter #StargazingABC #stargazing https://t.co/yZVk3Pmzyx" / Twitter Panagiotis Xipteras on Twitter: "How to convert your lens to a spotting # scope. Image:#Samyang 800mm #catadioptric #lens on #lens2scope converter #StargazingABC #stargazing https://t.co/yZVk3Pmzyx" / Twitter](https://pbs.twimg.com/media/C-FUbdPXoAEcbB6.jpg:large)