Farpoint Light Shield for 10" Dobsonian Telescopes – Zhumell Z10, Apertura AD10, Orion SkyLine 10 Celestron You want to shift the

You want to shift the clamshell's position to balance your rig

One pattern

The shield slows radiative cooling at the tube opening

The rings bolt to a D-size (Losmandy-style) dovetail plate

Farpoint Light Shield for 10" Dobsonian Telescopes – Zhumell Z10, Apertura AD10, Orion SkyLine 10 Celestron You want to shift theStray light is the reason your Dob doesn't look like the eyepiece view you expected. Every open tube Newtonian has the same weakness: the front of the tube is a wide open aperture pointed at the sky and at everything else. A neighbor's porch light, a passing headlight, the Moon 40 away. That light spills down the tube wall, scatters, and lands on your secondary. You never see the source. You just see a view that's flat, milky, and low contrast, and