The Baader 2” 495nm Colour Filter Yellow are 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 2” 495nm Colour Filter Yellow
- Yellow 435nm Longpass filter.
- Suppresses the secondary blue spectrum when using achromatic and half-apochromatic refractors (increasing image sharpness).
- For visual and photographic planetary observations.
- Enhances contrast between the belts on Jupiter.
- Increases contrast of the lunar and Martian surface.
- 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 2” 495nm Colour Filter Yellow
- Manufactured: Baader
- Condition: New
- Warranty: 2 Year
- Colour: Yellow
- Transmission Range: >495 nm
- Filter Size: 2 inch
- Filter Usage: Color, Planetary
- Filter Shape: Round
- Filter Thickness Without Cell: 2 mm
- Type Of Filter: Longpass
- Filter Mounted: Mounted (LPFC 6mm)
- Weight: 0.066 Kg
Kit Content:
Baader 2” 495nm Colour Filter Yellow
Manufactured Warranty
User Guide
For more information about, Baader 2” 495nm Colour Filter Yellow website.
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