Lumicon Oxygen III (OIII) Filter - SCT Rear Cell - (Preowned) 11 mm Eyepieces An optional Barlow lens (NOT

An optional Barlow lens (NOT included) can provide additional magnification for high-resolution planetary

Focuser:  2" Crayford-Style

StarSense not only automatically aligns itself from your smartdevice

25" Eyepiece Adapter Specifications

Vixen style Universal Dovetail

Lumicon Oxygen III (OIII) Filter - SCT Rear Cell - (Preowned) 11 mm Eyepieces An optional Barlow lens (NOTThis filter is used, in good condition. About the Lumicon Oxygen III (OIII) Filter SCT The renowned, original Lumicon OIII Filter narrow bandpass filter (11nm) isolates just the two doubly ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black background of space and the delicate photons of OIII light needed for