You can see the image upside down but left-right correct with 90 degree erecting prism while upright with 45 degree prism. Just simply insert the erecting prism into 1.25'' focuser and enjoy the nature far away: see the birds, deer at the edge of the forest, the summit cross on a mountain or a cruise ship far away on the sea……
Fit for 1.25'' focuser stand and eyepiece.
Multi-coated BK-7 prism for superior image fidelity and clearity.
90 degree erecting prism images upside down but left-right corrected, and 45-degree images uprightly.
Work well with refractor, Cassegrain and catadioptric telescope but not recommended for reflector telescope.
With dust cover to keep the lens clean for crisp viewing and long time service.
Angle: 45° / 90° (optional)
Material: Plastic + Metal
Weight: 74-88g / 2.6-3.1oz
Package weight: 92-106g / 3.2-3.7oz
Package size: 10.5 * 7 * 5cm / 4.1 *2.7 *1.9in
1 * Erecting Prism
On Feb-10-19 at 19:10:29 PST, seller added the following information:
Filed under: Eyepieces & Accessories