FC130 Flat Cap Imaging Diffuser fits 120-129mm tube OD or 100mm ERF Learn More

FC120 Flat Cap Imaging Diffuser fits 110-119mm tube OD or 90mm ERF Learn More

FC110 Flat Cap Imaging Diffuser fits 100-109mm tube OD or 80mm ERF Learn More

5.0Å PE Quantum Solar Filter, Calcium H 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

Daystar Instruments QUARK is the first Calcium "Eyepiece"
CALCIUM MODEL for F/7 or longer refractors

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

Eliminate waves of interference on monchromatic solar images with this handy adapter. T thread on front and rear. Learn More

Automobile style cigarette lighter cord for powering Quantum filters from a car or portable 12VDC power source. Learn More

Alligator style clips for powering Quantum filters off a battery. Learn More

Clean & Check of existing DayStar solar filter. Learn More

Restoration of blocker & trimmer filters on Quantum SE / ATM models of DayStar Solar Filters that are out of warranty. Learn More

0.4Å PE Quantum Solar Filter, Sodium D 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/27-F/35 focal ratio for best performance (sold separately). Learn More

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