This achromatic Baader SunDancer II Telecentric System TZ-3S from Alpine Astronomical is designed for the entire visible spectrum and can therefore not only be used on H-alpha systems but also replace a Barlow lens. While the magnification factor of...
This achromatic Baader SunDancer II Telecentric System TZ-3S from Alpine Astronomical is designed for the entire visible spectrum and can therefore not only be used on H-alpha systems but also replace a Barlow lens. While the magnification factor of...