TeleGizmos Objective Cover for 4″ Refractor Telescopes
This Objective Cover for 4″ Refractor Telescopes by TeleGizmos uses a multi-layer, polyethylene material with a fully aluminized surface. The material was first produced for NASA as an insulator in spacecraft with strength equal to a multi-layer tarp. It is very strong, light, tear, and puncture resistant, has double lap sewn seams for strength, and can be securely fastened to your Objective with a built-in drawstring.
The heat reflective ability of this TeleGizmos Objective Cover is extremely high, greatly reducing scope temperature on telescopes left outside in sunlight. True & effective radiant barrier protection. It is highly water-resistant without the need of spray on sealers. Also stops condensation build-up on scopes left outside at night. The material has extreme temperature tolerance; they stay malleable in temps well below freezing and are unaffected by summer sun and heat.