Fully multi-coated 5x Barlow will give your 1.25" telescope eyepieces a quintuple-power boost. Perfect for obtaining very high-power views of the Moon and planets. 4-element lens design preserves the optical quality of your telescope and eyepieces for sharp views. Ideal for use with a solar system imaging camera for high-magnification lunar and planetary astrophotography. Brass compression ring keeps eyepieces securely installed without scratching