99% Reflective 3" Diagonal By Use_Birding Solidly in the mid-magnification range

Solidly in the mid-magnification range for most amateur telescopes

Durable rubber armoring for long-lasting use

regardless of whether they are just starting out on that journey

The performance of this filter delivers images that would otherwise not be possible due to the negative influence of the light-polluted sky

Its unobstructed design and precision coatings deliver images with stunning contrast

99% Reflective 3" Diagonal By Use_Birding Solidly in the mid-magnification rangeThe Explore Scientific 3 inch Dielectric Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction and light weight, this first surface coated diagonal mirror reflects 99% of the light to help maintain the brightest possible image from your telescope. The insert barrel is a double taper, so it can be smoothly inserted or withdrawn from the focuser. The wide part of the taper prevents the diagonal from accidentally