ASUS Dew Shield DX for C6 and C8 Optical Tubes

Purpose and Compatibility

This flexible dew shield is designed for Celestron C6 and C8 Schmidt-Cassegrain or EdgeHD optical tubes. It serves astronomers and astrophotographers who need to prevent dew formation and block stray light during humid observing sessions. The custom fit ensures secure attachment to these specific 6-inch and 8-inch tube models for reliable performance in the field.

Build and Daily Use

Constructed from durable PE plastic, the shield balances flexibility with robustness for repeated mounting and removal. Extra padding at the attachment edge protects the tube finish while ensuring a snug, light-tight seal. The interior felt lining absorbs residual moisture and stray light, and the flexible material allows the shield to be rolled or flattened for compact storage and transport between observing sites.

Upgrade Context

This accessory replaces improvised solutions such as foam wraps, cardboard tubes, or generic caps that fit poorly and transmit light. The jump is worth it when dew regularly cuts sessions short or when stray light from nearby sources washes out contrast on faint deep-sky targets. It is not suited for optical tubes outside the C6 and C8 Schmidt-Cassegrain or EdgeHD series.