QUARK family of filters are designed to meet the needs of amateur solar observers at a reduced cost vs our professional grade of filters. Clients who wish to have high precision uniformity should consider the PE grade Quantum Filter. Otherwise, flat fielding is a good option for correcting any non-uniformity in imaging.
- Clear and usable aperture: 22 mm. (1.25″).
- Bandwidth measurement: 17 mm. (0.75″) central aperture.
- Fully blocked transmittance: 4%-8% of polarized light. Lower values correspond to narrower bandwidth filters.
- Spectral uniformity: The mean peak wavelength of all 12 mm. dia. areas shall be within ± 0.5 ångström of the full aperture wavelength measurement.
- Off-band rejection: Average optical density grater than 6.0 from X-ray to beyond 2.0 microns .
- Optical components: Selected instrument quality.
- Air-glass interfaces are anti-reflection coated in the filtering assemblies.
The Quantum SE is designed to meet the needs of most amateur solar observers at a reduced cost vs our professional grade of filters. Clients who wish to have high precision uniformity should consider the PE grade Quantum Filter. Otherwise, flat fielding is a good option for correcting any non-uniformity in imaging.
- Clear and usable aperture: 32 mm. (1.25″).
- Bandwidth measurement: 19 mm. (0.75″) central aperture.
- Fully blocked transmittance: 4%-8% of polarized light. Lower values correspond to narrower bandwidth filters.
- Spectral uniformity: The mean peak wavelength of all 12 mm. dia. areas shall be within ± 0.5 ångström of the full aperture wavelength measurement.
- Off-band rejection: Average optical density grater than 6.0 from X-ray to beyond 2.0 microns .
- Optical components: Selected instrument quality.
- Air-glass interfaces are anti-reflection coated in the filtering assemblies.
The Quantum PE is designed for serious research programs requiring full aperture spectral uniformity. Systems are fabricated from the finest optical and filtering components available.
- Clear and usable aperture: 32 mm. (1.25″).
- Bandwidth measurement: Full aperture 32 mm. (1.25″).
- Fully blocked transmittance: 4%-10% of polarized light. Lower values correspond to narrower bandwidth
filters. - Spectral uniformity: The mean peak wavelength of all 12 mm. dia. areas shall be within ± 0.05 ångström of the full aperture wavelength measurement.
- Off-band rejection: Average optical density is greater than 6.0 from X-ray to beyond 2.0 m .
- Optical components: BK-7 grade A, fine annealed 60-40 scratch-dig. Each optical element other than the etalon has a maximum wave front distortion of 1/4l @ 5461Å Hg.
- Air-glass interfaces are V-coated for a maximum of 0.2% reflectance per surface at the designed wavelength.
