Image erecting BAK4 prism with anti-reflection coating.
High accuracy and high light reflection prism.
Internally matte blackened and threaded for no internal stray light reflection.
1.25" adapter with brass compression ring included.
Entirely aluminum, black anodized, smooth finish. If there is any problem of focusing due to the light path for a few telescopes, please feel free to contact us for help.
 
Correct Upside Down Image
This wide 90 degree angle makes you view correct image from telescope stand,makes it easier to observe.
Brass Ring Design
Improved attachment design features a brass clamping ring which does not mar, and provides a more secure connection.
2"-1.25" Adapter
31mm - 2"-1.25" adapter. Both 1.25-inch and 2-inch eyepieces can be used to better meet customer needs.
Chromed Thumbscrews
Large, chromed thumbscrews, which make the connection more firm, more stable and more convenient to use.
Precision Prism
Image erecting BAK4 prism with anti-reflection coating, high quality optical prism inside rather than a mirror which makes your image clear and sharp. As optical quality here is critical, you should really use a high-quality prism. High accuracy and high light reflection prism, good for astronomical viewing, you can get a real original image.
Anti-reflection Coating
Internally matte blackened and threaded for no internal stray light reflection. The interference of stray light is effectively reduced, which not only improves the brightness of the image, but also effectively reduces the formation of dark edge and makes the edge details of the image clearer.