Crystalview Moon Filter는 눈부신 달의 밝기를 적당량 줄여 장시간 편안하게 볼 수 있게 합니다. 또한 달을 크리스탈처럼 샤프하게 보여 줍니다.

프라스틱 케이스가 포함되어 있습니다.

Moon and Skyglow filters improves blocking of mercury-vapor light and higher transmission at critical hydrogen-alpha and hydrogen-beta lines.  Bright light-polluted skies appear much darker and the contrast between object and sky is improved significantly. Moon and Skyglow filters allow maximum transmission of the important wavelengths of hydrogen-alpha and hydrogen-beta and doubly ionized oxygen most commonly emitted by nebulas.  Views of galaxies and star clusters are also enhanced slightly.