Telescope accessory mount rail

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The provided STL features a distinctive back curve designed to match an 8-inch (205mm) cassegrain telescope. I initially created it to replace a damaged rail that securely mounted my 1x red dot scope on the Celestron 8-inch telescope. If your telescope's outer diameter significantly deviates from this standard, you will likely need to adjust the tubedia parameter accordingly. The rest of the modifications are relatively straightforward.