Light path corrector (2.6x) for binoviewers

With this glass path corrector, you can use binocular attachments even on telescopes with a short backfocus. It is simply attached to the binocular attachment via the standardized 1.25" filter thread. 

Thanks to this standard filter thread, it is versatile; for example, it can be screwed into a 1.25" eyepiece, although the extension factor is reduced depending on the position of the eyepiece's field stop.

Light path: It reduces the light path by approximately 98mm, almost completely. This means that if a binocular attachment itself has a light path of 110mm, the light path is reduced to 110-98 = 12mm when using the 2.6x light path corrector! Simply reattach the binocular attachment with the 2.6x light path corrector attached (compared to a normal eyepiece) and refocus VERY EASILY.

We're no Cyclops so see much more with two eyes than with only one. That can be proved easily by using a simple binocular. In case of astronomical telescopes usually only one eye can be used. This is where the binoviewer helps and provides a real 3D view of the Moon or the brighter deepsky objects.

Needs 108 mm of light path, which makes it impossible to use with Newton reflectors or eventually with some refracting telescopes as well. In this case a corrector is needed. The WO 1.6x corrector reduces the required travel distance to 47 mm, and the 2.5x version reduces it to 4mm. With this latter one the binoviewer can be practically used with a Newton reflector as well but the focal length is increased 2.5x times.

The M26 adapter helps for Lacerta and William Optics Binoviewer to get enough light path. It enables the 1.6x or 2.5x optical path correctors to be adapted very quickly and thus save valuable light path.

When choosing the magnification keep in mind that the human brain can detect 1.5 times smaller details if the object is seen by both of the eyes. Using eyepieces providing 100x magnification the same image might be considered as 150x. Keep in mind also that two identical eyepieces are needed.