Dark-Sky Filter 77mm Slim accessories How a loving childhood with

How a loving childhood with all the turbulence of living a normal

The Explore Scientific mist filters are supplied with an individual test report

9x and 72x) and a 2x Barlow lens

Here is a helpful hint when it comes time to do that first alignment

various types of narrowband filters

Dark-Sky Filter 77mm Slim accessories How a loving childhood withUniversally applicable dark sky filter with 77mm filter thread for photo lenses. Particularly suitable for increasing contrast in aurora and deep sky photography. The wavelengths of 550nm (green) and 630nm (red), which are particularly relevant for aurora photography, are transmitted to more than 90%. A special feature of other so called CLS filters is that only the yellow light of the sodium line is effectively blocked at 590nmwill. This effectively