Baader Planetarium 1:1.70 Glasspath Corrector for MaxBright Binoviewer

What this corrector does

The Baader 1:1.70 Glasspath Corrector is an optical accessory built specifically for MaxBright and Mark V binoviewers. It fixes colour errors introduced by the long glass path through the prisms while also magnifying the image by a factor of 1.70. This extension of the focal plane lets the telescope reach focus with the binoviewer in place. Astronomers who need accurate colour and a usable focus position will find it essential.

Behaviour during extended sessions

The corrector maintains its colour correction and magnification factor consistently throughout long observing sessions. Because it sits in the optical train before the eyepieces, any residual misalignment in eyepiece centering has less visible impact on the final image. The supplied compensator further stabilises performance when longer focal length eyepieces are used for high magnification, keeping eye relief comfortable over many hours at the telescope.

Limits of the 1.70× magnification

The fixed 1.70× amplification sets a hard boundary on the effective focal length of the system. It cannot be varied or turned off, so users who need the native focal ratio for wide-field work must remove the unit entirely. The compensator only works within the range of eyepieces that physically fit the binoviewer; extremely long focal length eyepieces may still not reach focus. Buyers who want variable magnification or a larger image scale should look elsewhere.