TS Optics Telescope N 203/800 Photon OTA

The N 203/800 optics are incredibly high-speed and, therefore, ideally suited to astrophotography! You require a significantly shorter exposure time comparted to a system with a higher focal length. With its optional coma corrector, this Newtonian turns into an real astrograph. Due to its design, the Newtonian telescope produces images with no colour errors. Unlike other telescope designs, where a lot of money needs to be invested in the lenses to minimise these errors. With an 8 inch (approx. 203 millimetre) aperture, visual observations of nebulae and galaxies are a great pleasure too. The supplied extension tubes ensure the ability to reach the correct focal position. An integrated fan provides fast cooling to the ambient temperature. An 8-inch model is also still relatively easy to transport and only requires a medium-sized mount. The working distance from the M48 thread is 55 mm. Using a T-ring automatically sets the correct distance for astrophotography using DSLR cameras. TS Optics is a brand of Teleskop-Service.



Specifications:

Type Reflector Type of build Newton

Aperture (mm) 203 Focal length (mm) 800 Aperture ratio (f/) 4 Resolving capacity 0,68 Limit value (mag) 13,3 Light gathering capacity 840 Max. useful magnification 406 Tube weight (kg) 8,4 Tube material Steel Tube length (mm) 730 tube diameter (mm) 230 Tube construction Full tube Main mirror´s construction parabolic Secondary mirror obstruction 35 Secondary mirror diameter (mm) 70 Ventilation for central mirror yes reflectivity 94 Adjustable yes protective layer Quartz

Type of build Crayford Connection ( to eyepiece) 2 Gear reduction 1:10 fine focusing Motorized optional Backfocus (mm) 55 Connecting threaded socket (camera-side) M48