Optolong SHO 3nm Filter Kit 36MM Unmounted (OPT-SHO-3NM-KIT-36MM) Tripod 128°/sec Focuser Steps per Revolution:

128°/sec Focuser Steps per Revolution: 1000 steps Weight: 15 oz (

virtually eliminating periodic error and solidifying the status of the EQ8-Rh as an imminently precise

It also uses iOptron's ultra-quiet

Focal Length: 18

and Z-axis to realign your phone with the eyepiece

Optolong SHO 3nm Filter Kit 36MM Unmounted (OPT-SHO-3NM-KIT-36MM) Tripod 128°/sec Focuser Steps per Revolution:Optolong SHO 3nm filter kit includes SII 3nm, H Alpha 3nm, and OIII 3nm narrow band 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. Extra narrowband SIICCD3nm filter (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light