Esprit 100mm ED APO Triplet Refractor Optical Tube - S11410
Sky-Watcher
From $3,210.00
2 stores
The Sky-Watcher Esprit 100mm ED APO Triplet Refractor is a premium apochromatic refractor engineered for serious astrophotographers seeking high-performance wide-field imaging. Its three-element air-spaced ED optical design with FPL-53 glass virtually eliminates false color, delivering exceptional contrast and sharpness across the entire field of view. The dual-speed Helinear track focuser provides smooth, rock-solid focusing with zero image shift, while the included 2-element field flattener ensures a flat imaging plane across full-frame DSLR sensors. Complete with comprehensive accessories including an 8x50 finderscope, 2-inch dielectric diagonal, and M48 camera adapter, this compact yet rugged telescope delivers the imaging performance expected from telescopes costing thousands of dollars more.
Specifications
| Coatings | Fully Multi-Coated MHTC |
| Image Circle | 40 mm |
| Tube Material | Rolled Steel |
| Dovetail Type | Losmandy D-Plate |
| Warranty | 2 |
| Focuser Type | Dual-Speed Helinear Track Rack-and-Pinion |
| Camera Adapter | M48 |
| Aperture | 100 mm |
| Field Flattener | 2-Element Glass Doublet |
| Focuser Size | 3.4 in |
| Diagonal | 2-Inch Dielectric |
| Focal ratio | f/5.5 |
| Weight | 16.3 lb |
| Glass Type | FPL-53 ED with BK-7 |
| Focal length | 550 mm |
| Optical Tube Diameter | 5.75 mm |
| Optical design | Triplet Apochromatic ED |
| Finderscope | 8x50 Right-Angle |