Focuser for telephoto lens
thingiverse
Autofocus functionality for a vintage 200mm telephoto lens designed specifically for wide-field astrophotography, to be seamlessly integrated with a Celestron telescope. The system features two lens clamps with inner diameters of 72.3mm and 70.0mm respectively. Manufactured using high-quality PETG or ABS materials, the design boasts 100% infill with no support structures required. A reliable stepper motor, the 28BYJ-48, powers the autofocus mechanism, coupled with a precise 64:1 gear ratio for optimal performance. Comprehensive documentation and software for the electronics are readily available at https://sourceforge.net/projects/arduinoascomfocuserpro2diy/.
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