Optolong
Optolong Optics Co. ltd. is a manufacturer of astronomy filters, fluorescence filters. Optolong also offer other interference filters like UV filters, visible filters and Near inferred filters, beam splitter, anti-reflection coating and optical mirrors as a OEM service.
Optolong L-Ultimate 2" Filter
US$ 339.33Optolong Kit L-RGB 2" (50.8mm)
US$ 286.98Optolong Kit LRGB 36mm
US$ 234.65Optolong Kit L-RGB 1,25" (31.8mm)
US$ 187.54Optolong L-Pro Filter 2"
US$ 165.74