This is a 1/12 scale fully functional Newtonian reflecting telescope. Ultra miniature collectors item.
Made with a custom machined metal 2 axis equatorial mount. Some parts are 3D printed (saddle and pedestal legs), otherwise all precision machined metal done by a retired master telescope builder with 50 years experience offering telescopes 10-20 times bigger for science.
This is a basic telescope with functioning 2 axis manual slow motions. These can be upgraded to be both motorized. The basis for this is the Astro Works Mikromount 1. There is a great video of one on YouTube that has optional motors (not included in price) moving the telescope.
Comes with 3 interchangeable miniature glass eyepieces of .6" diameter and with a miniature fitted wooden case. Telescope tube can just be lifted out or repositioned for declination balanced as desired. Likewise the dec counterweights can be repositioned for exact RA balance. Axles are 1/4" diameter precision ground.
The optics are first rate with a miniature 1/2" minor axis diagonal. Collimation is fixed. Focusing is by precise primary mirror motion by a small knurled brass adjusting knob. The upper tube focuser holds eyepieces but does not move them. The tube is aluminum is 1 3/4" diameter x 8" length with ultra flat blackened interior. Outside is finely grained aluminum finish.
There is a 1/4" threaded tripod mounting hole in the metal pedestal base for us with any standard photo tripod. The brass worm gear is a miniature 100 tooth in an adjustable clutch just like a quality full size telescope. The worm is supported by 2 ball bearings and has an adjustable spring preload to minimize any perceived backlash. The declination slow motion has tangent arm driven by very fine threaded rod with knurled brass knobs. There is a clamp to lock the drive and also the dec axle tension. Fasteners range from tiny 1-72 to 4-40 screw size.
The mount pedestal legs have adjustable leveling screws. You will find miniature investment casting bronze pipe fittings are used per a full size instrument. To scale this would be an 18" telescope.
I will be very happy to answer all questions about this remarkable offering. Please note that this model photographs much larger than it actually is in person.
Filed under: High-End Telescope Auctions (USA)