Nebula Filter H-Alpha 2-inch 7nm Reflector Controls Belt-Driven Stepper motors with

Controls Belt-Driven Stepper motors with computerized GoTo features using the OpenGOTO ExploreStars for Apple iOS/iPadOS or Android Tablet

4 focal ratio shortens exposure times for basic deep sky photography and delivers wide fields of view—perfect for scanning large regions of the night sky

The Explore Scientific S-II nebula filter blocks all other colors (and thus almost all artificial light) and only lets through the emission lines of the ionized sulfur at 672 nm

this 80mm f/6 telescope delivers crisp

Nebula Filter H-Alpha 2-inch 7nm Reflector Controls Belt-Driven Stepper motors withIn 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,