The Baader 435nm Colour Filter 2” Dark Blue 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 435nm Colour Filter 2” Dark Blue
- Dark Blue 435nm bandpass filter.
- For visual and photographic planetary observations.
- Aids in better detection of Venus phase.
- The Violet Clearing on Mars can be seen better.
- Enhances the Great Red Spot on Jupiter and contrast between the belts.
- Enhances the contrast between zones on Saturn.
- 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 435nm Colour Filter 2” Dark Blue
- Manufactured: Baader
- Condition: New
- Warranty: 2 Year
- Colour: Dark Blue
- Transmission Range: >435 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 435nm Colour Filter 2” Dark Blue
Manufactured Warranty
User Guide
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