Second hand GSO 4 piece colour filter kit in excellent condition. All filters are nice and clean with no marks or blemishes. Each come complete with their own bolt case. The orange filter has no markings on it hence the price, but still the same quality as the rest of them. A nice little kit for the avid observer.
A second hand Moon and Skyglow filter 1.25" in excellent condition. The glass is clean and free of marks. Comes with filter case. This is suitable for lunar and planetary observing. This also acts as a IR cut so can be used with colour CCD cameras.