Moon and Skyglow Filter - 2" FMS-2
The Baader Planetarium Moon & Skyglow (Neodymium) filter brings an
entirely unique approach to planetary contrast enhancement and light
pollution reduction. Based on earlier research at Carl Zeiss, Baader has
developed a new filter that uses Neodymium glass which filters out a
few specific wavelengths from streetlights as well as skyglow from the
Moon. The unique spectral characteristics of Neodymium also boost color
contrasts by isolating the Red, Green, and Blue regions (so-called RGB
enhancement). The result is a filter that leaves natural colors mostly
intact, but significantly enhanced.
Planetary and Lunar views are
improved in all scopes, reflectors, refractors (APO or Achro).
Jupiter's Great Red Spot and ruddy hues of the bands are noticeably
enhanced, and contrast of Martian surface features significantly
boosted. The Background sky is darkened, and subtle details improved.
The filter's high efficiency preserves image brightness, and many
Galaxies, Nebulae and Globular Star Clusters are improved due to the
reduction of skyglow from artificial lighting.
The high quality
of Baader Planetarium filters permits stacking with no image
degradation. Achromat owners will find the combination of Moon &
Skyglow and the new Fringe Killer filter to be ideal for planetary
viewing. The high light throughput and natural coloration will make
achromats perform more like an apochromat. An integrated version is also
now available, the Semi-APO filter.
The filter substrate is a
special custom melt of Neodymium doped glass, designed for specific
transmission characteristics, and made only for Baader Planetarium. In
addition to it's unique spectral characteristics, unlike most filters,
the Baader Moon & Skyglow surfaces are optically polished to deliver
the best possible image sharpness and contrast.