BAADER 2" HERSCHEL PRISM MARK II GPS Optical thickness 15 mm

Optical thickness 15 mm

purpose-built Solar telescopes

Each group of lenses has this coating applied

so that the ideal focus point doesn't change too much from the original design

low-power consumption stepper motor drive system

BAADER 2" HERSCHEL PRISM MARK II GPS Optical thickness 15 mmThe Baader 2" Cool Ceramic Safety Herschel Prism Mark II is a 2" diagonal designed to give uncompromising white light views of the solar photosphere. Both Visual and Photographic versions are available with neutral density filters of varying strengths depending on the application. No additional front mounted rejection filter or solar film is needed with standard refractors to safely observe the sun when using the built in ND 3. 0 filter. Warning: