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An amateur astronomer readies his 2,000mm catadioptic telescope for a look at the stars on an evening in Orange County, CA Stock Photo - Alamy
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Celestron-Telescópio Astronômico Profissional, Conjunto de Tubo Óptico Schmidt Cassegrain OTA, Wide XLT, EdgeHD C8HD, 8" - AliExpress
![LCOGT's Faulkes North (FTN) 2m telescope at dusk, with the clamshell... | Download Scientific Diagram LCOGT's Faulkes North (FTN) 2m telescope at dusk, with the clamshell... | Download Scientific Diagram](https://www.researchgate.net/publication/258648749/figure/fig1/AS:297623153070080@1447970297146/LCOGTs-Faulkes-North-FTN-2m-telescope-at-dusk-with-the-clamshell-enclosure-open.png)