The Baader 500nm Colour Filter 2” Green carefully prepared for amateur astronomical interests. The glass are coplaner fine optically polished. These filters exceed the quality of the usual "raw polished" (hot flamed) coloured glass filters.
Because they are fine optically polished, these filters can be at any point in the mean path - far ahead of the focal point (for example, in front of a binocular approach!) without causing defects (astigmastism) or to degrade the image otherwise in any way!
The parallelisn of the optical surfaces is excellent with 30 arcseconds. Double images are absolutely excluded. For each filter colour, the transmission curve is supplied as a measurement protocol.
Features: Baader 500nm Colour Filter 2” Green
- Green 500nm bandpass filter.
- Provides the sharpest images with achromatic and refractors (eg double star observations.
- Improves the visibility of CO2 Hoarfrost and ground fog on Mars.
- Increases contrast between red and blue regions on Jupiter and Saturn.
- Provides the best contrast for lunar craters Tyco, Copernicus and Kepler.
- Multi-coated for max contrast – no reflections, scatter or dimming.
- Planeoptically polished to within 30 seconds of arc for a sharp image at high magnification with non-ageing sealed coating edges.
- Both sides 7-layer AR coating with only 0.25% residual reflection per surface. This is the most antireflective that has ever been undertaken with color filters.
Specification: Baader 500nm Colour Filter 2” Green
- Manufactured: Baader
- Condition: New
- Warranty: 2 Year
- Colour: Green
- Transmission Range: >500 nm
- Filter Size: 2 inch
- Filter Usage: Color, Planetary
- Filter Shape: Round
- Filter Thickness Without Cell: 2 mm
- Type Of Filter: Brandpass
- Filter Mounted: Mounted (LPFC 6mm)
- Weight: 0.066 Kg
Kit Content:
Baader 500nm Colour Filter 2” Green
Manufactured Warranty
User Guide
For more information about, Baader 500nm Colour Filter 2” Green website.
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