Flexible Velcro fastener provides optimal adaption to the diameter of the telescope or telephoto lens. Ideal for the transport - the dew shield can be placed space-saving around the tube.Very important if you live in a place that has dew often or if you use your scope in the daytime and want to keep stray light out and the contrast high. Height of the dew shield: 345mm, total length: 835mm. Suitable for Telescope tubes with 229 - 249 mm diameter.A dew shield prevents your telescope optics fogging-up in the first place. It keeps the optics completely dew-free and lets you observe for hours with the optimal view. The dew shield is lined on the inside with a black velvet-like fabric. This not only minimizes reflections but also ensures that no dew can reach the telescope's optics. The flexible design is quite practical, as it allows you to slide the dew shield behind a cupboard or next to your eyepiece case - it is optimally space-saving!. Astromania flexible dew shield are constructed of black ABS plastic and are all felt lined for maximum absorption of moisture and baffling of stray light. Particularly strong attachment to the telescope by non-slip foam rubber at the contact area to the tube.

Item Weight: 14.1 Ounces. Finderscope: Reflex. Focus Type: Manual Focus. Brand: Astromania. Manufacturer: Astromania. Date First Available: October 4, 2016. Is Discontinued By Manufacturer: No. Best Sellers Rank: #2 in Telescope Dew Caps. Customer Reviews: 4.4 out of 5 stars 91 ratings 4.4 out of 5 stars. Item model number: SKU_AM_FDS835B. : B078W326C2. Item Weight: 14.1 ounces. Product Dimensions: 0.2 x 0.2 x 0.12 inches.