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No 80A Blue colour filter to fit 1.25" filter threads (30% transmission).A great filter to enhance the detail on Jupiter and Saturn. It pulls out festoon, barge and rill detail in Jupiter's cloud belts and Great Red Spot and will help pick out elusive detail in Saturn's cloud belts and polar regions.

Can be used to improve seperation of double stars. The filter is made of top quality optical glass and is mounted in a black anodised aluminium holder and is supplied in plastic storage case.