FLT 156mm f/7.8 - WO Rack and Pinion 3.7-Inch - Gold
William Optics
From $7,398.00
2 stores
The William Optics FLT 156 is a premium air-spaced triplet apochromatic refractor featuring FPL-53 and Lanthanum glass optics designed for both deep-sky astrophotography and planetary observation. With a 156mm aperture, 1217mm focal length, and native f/7.8 focal ratio, this telescope delivers exceptional image sharpness while virtually eliminating chromatic aberration. The robust 3.7-inch rack and pinion dual-speed focuser with integrated 360-degree rotator handles heavy camera payloads and accepts optional M92 field flatteners to optimize imaging performance across various focal ratios. The gold-anodized construction includes cradle-style mounting with three stabilizing rings, Losmandy dovetail plate, and integrated lightweight Bahtinov mask for precise focusing.
Specifications
| Aperture | 156 mm |
| Focuser Type | 3.7-inch Rack and Pinion Dual-Speed |
| Focal length | 1217 mm |
| Focuser Features | 360-degree rotator, heavy-duty construction |
| Focal ratio | f/7.8 |
| Image Circle Diameter | 44.4 mm |
| Telescope Type | Air-spaced Triplet APO Refractor |
| Back Focus | 65.3 mm |
| Rear Connection | M92 threads |
| Glass Type | FPL-53 and Lanthanum |
| Tube Weight | 17 lb |
| Dovetail Type | Losmandy Standard |
| Folded Tube Length | 1120 mm |
| Finder Mount | Vixen-style saddle |
| Limiting Magnitude | 12.8 |
| Extended Tube Length | 1330 in |
| Mounting Style | Cradle with three rings |
| Finish Color | Gold anodized |
| Maximum Useful Magnification | 312 |
| Resolving Power | 0.88″ |