Optolong SHO 3nm Filter Kit 36MM Unmounted (OPT-SHO-3NM-KIT-36MM) Tripod It also uses iOptron's ultra-quiet

It also uses iOptron's ultra-quiet

At its native f/11

All parts of the Antlia filter drawer system are made of aviation aluminum CNN

6mm (24") Optical Tube Diameter: 147mm (5

No need to buy another set of filter drawer or slider when you buy new cameras or telescopes

Optolong SHO 3nm Filter Kit 36MM Unmounted (OPT-SHO-3NM-KIT-36MM) Tripod It also uses iOptron's ultra-quietOptolong 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