Systems are fabricated from the finest optical and filtering components available. Full aperture 32 mm. Lower values correspond to narrower bandwidth filters. The peak wavelength of any 12 mm. The ATM series filter system is designed to meet the needs of most amateur solar observers.
Lower values correspond to narrower bandwidth filters.
Average optical density grater than 6.0 from X-ray to beyond 2.0 microns . The T-Scanner series filter system is designed for visual observers requiring effective filtration without access to AC power. Optical specifications are identical to the ATM series with the exception that the filter clear aperture is reduced to 30 mm. Over the ambient temperature range of 0 o C. to 35 o C., the oven will control the on-band operational temperature to 0.5 o C. or equivalent to 0.05 wavelength tracking. Filter systems can be readily used on compound and refracting telescopes.