Sky Mentor Dew Shield & Bahtinov Mask for Seestar S50 - Metal Observing Chairs Another great benefit of ultra-wide

Another great benefit of ultra-wide eyepieces - like the Explore Scientific 82 Degree Series Telescope Eyepieces - is the ease with which you can gaze

without having to touch the phone or telescope

The filter is suitable for astronomical observation and imaging needs

It also comes with two baseplates so you can use the same finderscope on two telescopes

Substrate:  Optical Glass

Sky Mentor Dew Shield & Bahtinov Mask for Seestar S50 - Metal Observing Chairs Another great benefit of ultra-wideSky Mentor S50 Dew Shield & Bahtinov Mask Dew Shield to protect the Seestar S50 objective lens from moisture and to block stray light from hitting the lens and decreasing contrast. Bahtinov Mask for precise focusing Interface: 50mm