2.0Å PE Quantum Solar Filter, Calcium K line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/13-F/35 focal ratio for best performance (sold separately). Learn More

0.3Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

0.4Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

0.5Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

0.6Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

0.7Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

0.8Å PE Quantum Solar Filter, Hydrogen Alpha line. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

Solar System Filter Wheel, choose your filter configuration below. For use with refractors, SCTs, Maksutovs. Includes front and rear plates, power supply, instructions, and hard case. Requires ERF or UV/IR cut filter, plus Powermate barlow or stop down mask to reach F/27-F/35 focal ratio for best performance (sold separately). Learn More

USB to Serial cable for connecting Quantum filters to a computer with a USB port. Learn More