Optolong LRGB + H-ALPHA 12nm/OIII CCD 12nm + SII CCD 12nm/1.25" (7 Fil

Optolong LRGB + H-ALPHA 12nm/OIII CCD 12nm + SII CCD 12nm/1.25" (7 Filters)

• Premium Quality filter set for anyone who wants to produce color images using the trichromy-technique.

• High Quality LRGB filters designed for maximum transmission.

• Set consits of UV/IR cut (Luminance), Red, Green and Blue Filter, H-Alpha 12nm, OIII CCD 12nm and SII CCD 12nm

  Features / Specifications:

• Glass by Schott Germany.

• Ultra-hard ion Beam Coatings on both sides.

• High transmission (<96%) for short exposure times.

• 30 arcsec parallelism.

• 1.88mm glass thickness.

• Completely resistant against high humidity, scratches and aging effects.

• Every filter is fine optically polished to 1/4 wave length.

• Blocking emission lines of Mercury and Sodium vapor lamps.

• IR -Cut (Luminance) for better contrast

• Low profile aluminium filtercell

• Star halo reduction on all filters.

• Diffraction limited, the filter will not reduce the optical performance of your telescope

  All filters are parfocal so there is little or no need to refocus between filter chang