The Baader Hyperion Classic 31mm Eyepiece
The Hyperion eyepieces have above (“eye-side”) two system thread. To expose them, either the eyecup or the large thread protection ring must be removed. For one, it’s an M43 thread and continue to a second with SP54 thread; the M43 thread (system thread 1) accessories, E.g. for the normal eyepiece projection is used for connection of T2. A M34 on T2 transition ring (Hyperion M43/T-2) is to switch threads between them (known as afocal projection), the thread SP 54 (system thread 2) is used for connecting digital cameras or camcorders, where the lens can not be removed.
A variety of additional Hyperion focal lengths can be obtained by using our 2″ fine tuning extensions rings 14mm and 28mm, or even with our 2″ eyepiece filter set. Thus an eyepiece of 5mm focal length can be converted into one of 2.6mm focal length – without loss of sharpness – above all, because no additional lenses are introduced into the bean, which is unavoidable when using a Barlow lens. Also you can of course astronomical 1¼” eyepiece filters in the 1¼” screwing the eyepiece barrel.
Further focal modification there are tweaking our rings (FTR) with 14 – and 28mm length. The different possible focal lengths when removing the first lens group, and in combination with filters and fine tuning rings can be found in the table above.
Due to the wealth of functions, there is the Baader Hyperion eyepieces own, 6-page instruction manual to explain the variety of connection options of cameras and all the possibilities of the focal length fine tuning.
|Dimensions||22 × 9 × 10 cm|