APO 106mm f/6.6 Triplet ED
Airy Disk
The Airy Disk APO 106mm f/6.6 Triplet ED is a premium apochromatic refractor designed for both astrophotography and visual observation, featuring a high-quality Hoya FCD100 ED triplet lens system that delivers exceptional color correction and sharp edge-to-edge performance. With its portable 4-inch aperture and versatile focal length of 700mm, this telescope excels at planetary imaging, deep-sky astrophotography, and visual contrast while remaining accessible for traveling astronomers. Optional 0.75x and 0.92x field flattener/reducers transform it into a capable imaging platform for full-frame and APS-C cameras, while the precision dual-speed focuser with three linear rails ensures smooth critical focus for demanding applications.
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Specifications
| Aperture | 106 mm |
| Tube Material | Aluminum Alloy |
| Weight | 5.5 lb |
| Focuser Type | 3 inch dual-speed 1:10 rack-and-pinion with 3 linear rails |
| Focuser Payload Capacity | 10 lb |
| Field Flattener Options | 0.75x (f/5) and 0.92x (f/6) reduction |
| Optical design | Triplet ED (3-element) |
| Resolving Power | 1.09″ |
| Length (hood retracted) | 550 mm |
| Focal length | 700 mm |
| Tube Color | White |
| Tube Outer Diameter | 145 in |
| Eyepiece Clamp | 2 inch with 1.25 inch adapter |
| Focal ratio | f/6.6 |
| Coating | Full surface wideband multilayer |
| Length (hood extended) | 645 mm |
| Glass Type | Hoya FCD100, CDGM |
| Limiting Stellar Magnitude | 11.9 |
| Dovetail Style | Vixen |
| Suitable Photo Sensor | Full Frame |