Nebula Filter S-II 1.25-inch 12nm Filter Type_CLS When atmospheric conditions are almost

When atmospheric conditions are almost perfect

and superior flat field characteristics

This allows transport in a small car

Four smaller fans are installed in the side of the mirror box as well as a large fan installed under the main mirror

Nebula Filter S-II 1.25-inch 12nm Filter Type_CLS When atmospheric conditions are almostIn 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,