مجموعات مرشحات النطاق الضيق

The OIII and SII filters pair perfectly with my H-alpha, and the multiple size options meant I didn't have to swap adapters. Stars stay tight corner-to-corner across the whole frame, which is exactly what I needed for my narrowband setup.

I was worried about parfocal performance across the set, but these three filters hold focus perfectly without needing to tweak my setup. The 3nm bandpass on the H-alpha really cuts through my light-polluted backyard sky.

The three filters are nicely matched for color balance in my dual narrowband setup, and the H-alpha really cuts through light pollution. Only wish the set came with a storage case.