Dew is often a real problem on clear nights. After just a few hours, the optics start to fog up, making observation or photography impossible. A good dew cap reduces the risk of fogging and thus extends the observation time.
It also keeps out stray light from the side. Stray light, for example from street lamps, reduces contrast and often causes unwanted reflections in photographs. Replacement caps are really black on the inside. Stray light cannot penetrate the telescope in the first place.
This dew cap fits the Seestar S50 from ZWO.- Material PETG with UV resistance
- densionally stable up to 80°
Scope of delivery
