Contrast filter for Sun observation
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Contrast filter for Sun observation
Another first for solar astronomy, the Altair G-Band 2nm Solar filter enhances finer details in the solar photosphere.
Altair 2nm G-Band Solar Contrast Filter filter specifications:
- Standard 1.25" Filter Threaded Aluminium Cell
- CWL 430.3nm @ 96% transmission, tolerance 1%
- FWHM 2nm, tolerance 0.5nm.
- 1.85mm thick quartz ?/4, Parallelism (arcsec) 30"
- Si02 "hard" overcoat with UVIR Block 300-1100nm and Anti-Reflection Coating
- High resolution spectrographic test report included corresponding to each individual filter.
269.00 €
Estimated delivery time : 2-4 weeks
Another first for solar astronomy, the Altair G-Band 2nm Solar filter enhances finer details in the solar photosphere.
Altair 2nm G-Band Solar Contrast Filter filter specifications:
- Standard 2" Filter Threaded Aluminium Cell
- CWL 430.3nm @ 96% transmission, tolerance 1%
- FWHM 2nm, tolerance 0.5nm.
- 1.85mm thick quartz ?/4, Parallelism (arcsec) 30"
- Si02 "hard" overcoat with UVIR Block 300-1100nm and Anti-Reflection Coating
- High resolution spectrographic test report included corresponding to each individual filter.
369.00 €
Estimated delivery time : 2-4 weeks
The Altair 1.25" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
109.00 €
Estimated delivery time : 2-4 weeks
The Altair 2" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
189.00 €
Estimated delivery time : 2-4 weeks
The Baader Solar Continuum Filter is practically a narrowband photosphere filter for solar observation in white light and provides the highest contrast.
- Baader 7.5 nm Solar Continuum Filter, CWL 540 nm, in cell with 1.25" screw-in thread
- A must for owners of achromatic refractors. This narrowband-filter cuts the spectral range where lens optics draw sharpest and contrastiest. The Solar Continuum Filter brings power back to you.
- Enhances contrast and reduces the effect of atmospheric turbulence (in combination with white light solar filters)
- Enormous contrast gain in monochrome photography even on pure color systems - see second and third image
- Important note: The Solar Continuum Filter must be used for purely VISUAL solar observation ONLY with additional filtering (e.g. Baader Herschel prism or AstroSolar Safety Filml)
118.00 €
Estimated delivery time : 1-4 days
The Baader Solar Continuum Filter is practically a narrowband photosphere filter for solar observation in white light and provides the highest contrast.
- Baader 7.5 nm Solar Continuum Filter, CWL 540 nm, in cell with 2" screw-in thread
- A must for owners of achromatic refractors. This narrowband-filter cuts the spectral range where lens optics draw sharpest and contrastiest. The Solar Continuum Filter brings power back to you.
- Enhances contrast and reduces the effect of atmospheric turbulence (in combination with white light solar filters)
- Enormous contrast gain in monochrome photography even on pure color systems- see second and third image
- Important note: The Solar Continuum Filter must be used for purely VISUAL solar observation ONLY with additional filtering (e.g. Baader Herschel prism or AstroSolar Safety Filml)
198.00 €
Estimated delivery time : 1-4 days
