The Glaspath Correctors were designed primarily to correct the prismatic color fringing that occurs with refractors due to the high amount of glasses used in binocular prisms. The Glaspath Correctors are not Barlow lenses. The reason for this name is only secondly the displacement of the focal point.
Several versions are available for the Baader Mark V Binocular viewer. The BP4A version is included with your Mark V binocular viewer.
BP4A - Glaspath Corrector 1:1.25.
Optical path length: >= -30mm
BP4B - Glaspath Corrector 1:1.70
Optical path length: >= -65mm
BP4C - Glaspath Corrector 1:2.60
Optical path length: >= -120mm
BPRSBC18 - 2" Refractor/Schmidt Cassegrain Corrector at full aperture 1:1.8x
The optical lengths must be exact, so you will also need these items: Baader T-2 Maxbrignt mirror diagonal (BP1A) and the T-2 change ring (BP7) to change to 90 degrees.
Insert diameter: 2" (50.8mm), including M48 filter thread
Use these Glaspath Correctors with the Mark V Binocular Viewer and other components of the T-2 system for versatility.
Baader T-2 System Chart
Baader T-2 System Parts list. Astro-Physics carries some of these components designated by our part number that begins with BP and includes the reference number on the chart. We can special order any others that would like to have.