Nebula Filter H-Alpha 2-inch 7nm Reflector the contrast and thus the

the contrast and thus the perception of the deep-sky objects also suffer

This set opens up a full range of discovery options by including a 40mm telescope

With its generous 114mm aperture

this 80mm f/6 telescope delivers crisp

5" Tripod weight 13

Nebula Filter H-Alpha 2-inch 7nm Reflector the contrast and thus theIn addition to the turbulence in the air, the brightening of the night sky is the greatest obstacle to observing faint objects beyond the solar system. Street lights and other artificial lighting mean that the sky in human settlements is no longer properly black. As a result, the contrast and thus the perception of the deep sky objects also suffer. Depending on the type of celestial object, however, part of the interfering light can be filtered out,