by skylex86. FREE. Can be used with the following telescopes: Evostar models 90/102/120/150, Startravel models 80/102/120/150, Skyliner models 150/200/250/300 & Explorer models 150 . The bill of material: Arduino Uno or Nano: 10€ Case for the Arduino board and cable: 5€ The kit just contains the electronics - it is up to the user to find a stepper motor and attach it to their own telescope focuser. Hi everyone, I've built a DIY telescope focuser using an ATTINY85 (overengineered, I know, but I wanted to be able to change the characteristics of the focuser without too much hassle). Dual speed push-button operation (fast & slow). They also make remote focusing possible when imaging the sky. Full schematics, Stripboard layout, test programs, build instructions. Focuser upgrades for Telescopes with Crayford, rack and piniion and electric focusers for Astronomical telescopes. Also, It would be convenient to be able to control the mount remotely. Will accept both 1.25" and 2" standard format eyepieces. DIY motorized Focuser By TheMrGecko, October 23, 2017 in DIY Astronomer TheMrGecko New Members 50 49 Location: North Lincolnshire Posted October 23, 2017 2 RPM Motor and a rubber band. So, the device will act as follow: If we push the nunchuck joystick upward, the motor will rotate let's say clockwise, and the focuser will go let's say upwards. The smaller pulley on the stepper has 32 teeth and the larger one on the focuser has 60 teeth. Motorized Focuser Archives - Silios.gr by AndrewMaker98. This ZWO Hand Controller links to the ZWO EAF and enables you to use it as a stand-alone focuser motor without a need to use a PC. It is contoured to fit the eight to twelve-inch telescope tubes and it can accept both 1.25 and 2-inch eyepieces to ensure that you get the most perfect view. Total focuser range is ~13mm, and it takes 11000 steps to get there, so each step is approximately 0.000044" (1.2 microns) at the focal plane.
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