Celestron Telescope 1.25" Red Eyepiece Filter #25 Mars Planetary

Celestron #25 1.25" Red Telescope Eyepiece Filter for looking at Mars

Brand new but no outer box.  Eyepiece filters are an invaluable aid in lunar and planetary observing.  They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, and lessen eye fatigue.  Celestron's filters are made of high quality, solid plane parallel glass with excellent homogeneity.   The filter cells are anodized aluminum.  The colored filters are anti-reflection coated to prevent glaring and ghosting.  All filters are threaded to fit 1.25" eyepieces.
Red filter is great for looking at Mars - Ideal for observation of the polar ice caps and features on the Martian surface. Sharpens the boundaries of yellow dust clouds.

Grab this very nice, new - but no box, filter from a trusted eBay store. It comes with a plastic case and is made by a top-brand telescope maker.

Celestron Telescope 1.25" Red Eyepiece Filter #25 Mars Planetary
  • Item #: Celestron #25 Red Filter
  • Manufacturer: Celestron
  • Condition: New
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Price $7.69