Multi-layer broadband, >93% visible transmission, >99.8% at peak
Focuser type
3.5" I.D. rack and pinion, 9:1 dual-speed, 114 mm travel
Tube length
1016 mm
About
190 mm f/6 three-element Christen Superachromat refractor optimized for high-resolution medium-field imaging and usable visually, with a 3.5-inch rack-and-pinion focuser and retractable dew shield.
