- High-performance observational eyepiece filter markedly improves views of Mars
- Fully-coated Mars filter increases contrast to bring out subtle details on the disc of the red planet
- When using the Mars filter on a clear, dark evening you'll see polar ice cap detail, subtle mare shadings, duststorm and cloud activity
- Eyepiece filter dramatically improves views of Mars even in smaller astronomical telescopes
- Designed to fit 1.25" telescope eyepieces with filter threads. Metal filter cell construction.