2"90° 99% reflective diagonal For Refractor Astronomy Telescope
The dielectric coating applied to the quartz mirror allows 99% of the light striking the surface to be reflected to the user's eye. This high degree of reflection, coupled with the internal baffling to absorb stray light, produces sharp images with highly contrasted colors.
Designed for use with 2" eyepieces, there is an adapter for 1.25" eyepieces included. Both the 2" and 1.25" compression rings are made of brass and ensure a solid fit for the eyepieces and will not damage them