Baader 2" 90° Star Diagonal with Prism from Carl ZEISS

Baader 2" diagonal prism with prism from Carl ZEISS

The diagonal prism offers highest precision and best mechanical workmanship. It can be recommended for telescopes with relatively short back focus, too.

The traditionally outstanding ZEISS quality is combined with state-of-the-art mechanics by Baader, like the proven ClickLock clamping. Here, the eyepiece side accessories are clamped over the whole area. In opposite to locking screws, the eyepiece or adapter is centered exactly on the optical axis and not pressed against the opposite surface.

New since 01/2020 is the 2" Safety-Kerf barrel with safety grooves for tilt-free clamping on the telescope side, which is also less prone to jamming.

Ultra short adaption of the Hyperion Zoom eyepiece

Image at left - usage example with the Baader diagonal mirror (white body) - thread connectors are identical.

If having too little back focus (focus range) of the telescope or for accessoreis tht have to be attached "captiveliy" to the telescope (public observatories), you can attach the Hyperion Zoom directly to the diagonal prism, instead using the 2" barrel, thus saving approximately 47 mm of optical path.

The ClickLock clamp is simply detached from the body by loosening of the six fixing screws at the side. After that, a female 2" / SCT thread becomes accessible at the body. Into this thread, the gender changer BA1508020 is screwed. The Hyperion Mark III or Mark IV Zoom eyepiece can directly be screwed to this gender changer.

The Baader ClickLock® System at a glance

Never before an eyepiece receptacle for amateur astronomy has been manufactured thus complex. The Baader ClickLock (1.25"/2") is a precisely fitting, very massive eyepiece clamp without locking screws (!). Inserted eyepieces / CCD cameras etc. are held twist-proof but nonetheless will not be scratched! With a small 20° rotation any eyepiece will be clamped absolutely secure.

You don´t need to tighten Baader´s ClickLock clamps until your hand is damaged, as the mechanical principle origins from professional machine construction. The tool holder of modern CNC machining centers works the same way. By clever use of leverage effects, the clamping force is enhanced to the manifold extent. The inserted item is held at three sides, like with a quick-action chuck, and thus cannot carry out tilting movements anymore.

Detail of the 2" ClickLock system

A 20° rotation by pressing the rotary lever is sufficient to securely hold all 2" accessories perfectly safe and firmly.

Ratchet function - shows acoustic and haptic to the position of the clamp. You will be able to recognise the position of the clamp even in the dark

Massive compression ring - holds the most expensive accessory totally safe with no scratches and marring

The lever position can be set via 6 slotted camera screws or 6 hexagon socket head screws with hex key for making the CL clamp usable for both right-handers and left-handers.