This popular desiccant cap has a dual diameter nosepiece to fit both 1.25" and 2" focusers. It comes with 10 sachets of desiccant, additional sachets can be purchased separately.
Designed and manufactured for us here in the UK.
Made entirely from CNC-machined aluminium (no plastic!).
Red or Black anodised screw cap and black-anodised cup. The fit and finish is very nice indeed!
Supplied with a pack of 10x sachets of moisture absorbing desiccant.
Note: Please don't remove desiccant from the sachets (the sachets are perforated).
A sachet or two is placed in the cup then the lid screwed on. A captive O-ring ensures the cap fits snugly into 2-inch focusers and the lid is air-tight. The desiccant draws moisture from inside the telescope tube through the cap's breathing holes. Used regularly the cap will prevent moisture harming the telescope optics.
The desiccant starts yellow then turns green when it can no longer absorb moisture. The desiccant sachets can be dried on a radiator then reused several times. Replacement sachets are available.
Suitable for SCT, Maksutov, refractor and other telescopes with a closed-tube design.