More about the series Cat...
The AP 51/250 optics are an impressive combination of small size, affordable price and outstanding optical quality, and are aimed at all astrophotographers and nature photographers. At the heart of the optical design is the Petzval design consisting of 4 elements in 3 groups, using FPL53 and FPL51 glass. The result is a colour-pure, corrected image field with a diameter of over 44 millimetres – ideal for full-frame cameras! The fast aperture ratio of f/4.9 allows for short exposure times.
An M48 thread is provided for connecting the camera. Suitable T2 adaptors can be found under "Recommended accessories". Focusing is helical, i.e. by turning the easy-grip ring on the tube. This means that even heavy cameras are no problem.
The 110 mm long prism rail offers three connection options: for screwing with a photo thread or for sliding in according to Arca-Swiss or Vixen standards. With these three options, it should be no problem to attach the telescope to all common photo tripods, camera mounts or astronomical mounts.
The scope comes with a protective nylon carrying bag and a specially designed Bahtinov mask. This mask helps with focusing and is permanently integrated into the lens attachment.
