This telescope from the ARTEC series combines rigid and stable mechanics with high-quality optics to create a Newtonian with a fast f/4.0 aperture ratio. A particularly high-quality Astrograph that leaves nothing to be desired!
The 3K carbon tube with a thickness of 2.5 millimetres is not only very rigid and temperature-stable, but also treated with a special dust-repellent clear lacquer. This prevents internal reflections. The metal parts are also precision CNC-milled. Artesky uses only high-quality aluminium, stainless steel and bronze. This applies in particular to the very rigid secondary mirror mount, which holds an 88 mm secondary mirror. The size and position of this secondary mirror are designed to prevent back-focus problems, as is to be expected with an astrograph. The Newtonian allows the connection of an extensive system for photography, such as off-axis guiders and filter wheels.
The result is a tube that is stable over a wide range of temperatures and maintains its focus even during exposure sequences that take many hours.
The quality of the optics is commensurate with the mechanics: the reflectivity is over 93%, the surface accuracy is less than 1/8 lambda, with a Strehl ratio of over 0.95. With the recommended coma corrector, a fast aperture ratio of f/3.7 is achieved!
The legendary Feather Touch FTF3015B-A from Starlight Instruments is used as the focuser: it doesn't get any better than this! This focuser carries heavy accessories without slipping and allows precise focusing via the 1:10 micro reduction gear. Of course, the focuser can be rotated and clamps the accessories evenly and gently via a brass ring. Motorisation solutions are also available for this Feather Touch.
It not only matters which telescope you buy but also where you buy it. Our additional services:
- We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
- We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
