Optolong

Optolong improved Narrowband Ha SII OIII 6.5nm filter set, 36mm unmounted

Optolong LRGB-SHO 6.5nm 7-filter set, 1.25"

Optolong LRGB-SHO 6.5nm 7-filter set, 36mm Unmounted

Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrowband filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software.