Optical Accessories

The Altair wide-field binoviewer allows vignetting-free observations with almost all 1.25" eyepieces through oversized prisms.

• Clear aperture 28 mm / prism diameter 30 mm
• 1.25 connection on the telescope
• Prism surface Lambda/8
• Self-centering eyepiece connection for perfect fit of the eyepieces, also with safety groove
• Built-in micro focuser for diopter compensation on each side
• Short design with only 118.5 mm optical path - can be used with many refractors without compensating the optical path
• Robust transport and storage case included in the scope of delivery

• At 588 nm wavelength the negative focal length is - 104.20 mm
• Cemented 2 lens element with ED glass
• Free aperture : 22 mm
• Broadband multicoated
• Magnification factor 1.8x
• Screwable into our APM adapter kit (see accessories)