Barlowed Laser with bayonet
thingiverse
This tool for adjusting newton telescopes can be directly connected to a (Canon) bayonet. It's inspired by the work of Markus aka 'conehead'. The thread were he presented his version can be found here: https://forum.astronomie.de/threads/der-hyperlaser.314557/ You simply have to remove the DSLR from your image train, connect the Barlowed Laser, adjust youre telescope and reconnect the camera. The focus of the laser is adjustabe so it can be easily adapted to your'e telescope. The Laser with build in focusoptic can be found here : https://www.amazon.de/gp/product/B07QFWBHZM/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 Since the laser only needs about 17mA, a small 3.7V accumulator with 250mAh is quite sufficient and can be found here : https://www.amazon.de/gp/product/B08FD3V6TF/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 For connecting the laser to the accumulator you may need this plug and jack : https://www.ebay.de/itm/222819180220 As a switch I used a simple toggle switch. The hole has a diameter of 6mm. You will have to print it with supports. I used PLA with 0.12mm layers.
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