SLOAN/SDSS griz' Photometric Imaging Filter Set - 50mm Round

The Antlia SLOAN/SDSS griz' Photometric Imaging Filter Set is a professional-grade four-filter system designed for scientific photometric imaging and spectral analysis across the visible to near-infrared spectrum. This set follows the Sloan Digital Sky Survey (SDSS) standard, the most widely used photometric system in modern observatories, covering wavelengths from 400nm to 1100nm with four precisely-calibrated filters (g', r', i', and z'). Each filter features Ion Gun Assisted Deposition coating technology on double-sided polished substrates for exceptional durability and consistency, with peak transmission guaranteed above 98% (g' >95%) and superior optical density suppression for enhanced contrast. Suitable for focal ratios ranging from f/15 to f/1.8, these 50mm unmounted filters work seamlessly with professional filter wheels and full-frame monochrome CCD/CMOS sensors for advanced photometric research and astrophotography.