OPTOLONG LRGB Set (31mm, without housing)

These LRGB filters produce by very steep filter skirts for excellent color differentiation.

Use:
For shooting devices without Bayer mask (monochrome CCD or Planetencam). The filters are suitable for color photography, both in the field Deep Sky as well as planetary images.

Technical specifications
Supporting glass of Schott
Surface Quality 60/40 (corresponding to the EE kindness by American military standard MIL-O-13830)
Fine optically polished, 1/4 wavefront
95% peak transmittance in the passband
IR Blocking 700-1100nm in the stop band / off band
Coating properties:
High Homogeneous multilayer anti-reflection coating
The allowances are not cemented to the optical carrier, but applied Deposition (IBAD) method by electron beam evaporation and subsequent ion beam assisted.
This special process allows a high durability and scratch resistance, and high stability of the center wavelength (CWL) and prevents a temperature drift.
High transmission in the passband, high optical density in the stop band.

Filter version:
Ultrathin filter mount for maximum passage: 26mm at the 1.25 "filters, 45mm at the 2" filters
Precise CNC manufacturing
Sandblasted
Black anodized
blackened to reflections
Laser engraving - no fading of the label