DAYSTAR QUANTUM CALCIUM II-H 5Å PE f/5 If you use a field

If you use a field flattener or a coma corrector that requires a specific distance to the sensor

made of Cordura

Compatibility 30A073 small Losmandy saddle

clip on Nikon Full Frame (FF)

The case Elephant 300 features:

DAYSTAR QUANTUM CALCIUM II-H 5Å PE f/5 If you use a fieldDayStar's Quantum range of solar filters are designed for professional and serious amateur applications and offer absolute precision control over wavelength transmission. The PE grade series is designed for professional research studies and applications in which precision homogeneity and on band transmittance values across the substrate surface are required. These filters require additional quality control steps and additional fabrication and testing