Contrast filter for Sun observation

 Contrast filter for Sun observation
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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.
239.00 €
Delivery date : 1 week
 
 
The Altair 1.25" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
89.00 €
Delivery date : 1-2 weeks
 
 
The Altair 2" Solar Continuum filter Enhances sunspots, granulation, and fine photosphere detail. For use with Baader Solar Filter or Herschel Wedge.
169.00 €
Delivery date : 3-4 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 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 €
Delivery date : 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 €
Delivery date : 1-4 days