William Optics' 2" 45-deg erecting prism will scream to be used with that nice premium refractor of yours! Perfect for daytime observations. No further description is needed: just check it out!
- Image erecting BAK4 prism with anti-reflection coating.
- High accuracy and high light reflection prism.
- Brass compression ring.
- Internally matte blackened and threaded for no internal stray light reflection.
- Threaded for 2" filters.
Ready to Go
- 1.25" adapter with brass compression ring included.
- Large, chromed thumbscrews.
- Entirely aluminum, black anodized.
- Smooth finish.
- Prism: High quality BAK4 with anti-reflection coating
- Materials: Entirely machined aluminum
- Angle: 45 degree
- Prism clear aperture: 31mm
- 2"-1.25" adapter with brass compression rings
- Weight: 400g
Note that this diagonal is not recommended for astronomical use as the prism edges will create spikes in star images.