Description
- Fits 2" threads
- Colour Filter Set with 6 colours for contrast enhancement of lunar and planetary observations.
- Largest free opening of all the colour filters on the market which eliminates any vignetting.
- Double 7-layer anti-reflection coating with only 0.25% residual reflection per surface (Phantom Group Coating) resulting in no reflections, scatter or dimming.
- Planeoptically polished for sharp image at high magnification.
- Included Filters: Dark Blue Filter, Light Blue Filter, Green Filter, Yellow Filter, Orange Filter and Red Filter
- Non-ageing sealed coating
- Largest free opening of all colour filters on the market to eliminate any vignetting.
- CNC machined "grip crown" provides excellent handling and comfort.
- Both sides 7-layer AR coating with only 0.25% residual reflection per surface. This is the most anti-reflective that has ever been undertaken with colour filters.
- The most important criterion for any kind of light filtering is brightness. Certain spectral ranges at high magnification will only work at the highest light transmittance.
- The long-pass filter in this filter set offers 98% transmission and produces no flare. Unmatched by other brands. This can be seen in comparison with standard colour filters at once - the filter colour radiant downright.
- The combination of our infrared (IR) cut filter 1¼" and the RG 610 red filter results as an extremely narrow-band H-α pass filter for the CCD photography of red emission nebulae - at a ridiculously low price!
- A wide range of adaptors allow the uses of T-2 photo threads (See: Baader Astro T-2 System™).