In brief:
- ED lens with FPL51 and Lanthanum glass from Ohara, Japan
- Focuser with ball bearings, 360° rotation and reduction gear
- Fast light gathering thanks to a fast f/6 aperture ratio
With its fast f/6 aperture ratio, the AP 110/660 ED optics are more light-sensitive than simple ED apochromats, which normally have f/7 to f/9. In order to achieve good colour correction, the FPL51 special glass has been supplemented with another special glass (Lanthanum glass). This achieves a correction equivalent to a normal f/7 to f/8 ED refractor. The high light intensity also offers advantages for astrophotography, as an object can be exposed in just one night. Suitable image field correctors can be found in the accessories section.
The Apo features a high-quality 2.7" rack and pinion focuser with ball bearings. This guarantees sensitive and accurate focusing, even with heavy accessories. The focuser accepts 2" and 1.25" accessories. You can also use 2" diagonal mirrors and common image field correctors with a 2" barrel.
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.
