Esprit 150mm ED APO Triplet Refractor Optical Tube - S11430
Sky-Watcher
From $8,250.00
2 stores
The Sky-Watcher Esprit 150mm ED APO Triplet Refractor is a premium apochromatic refractor designed for discerning astrophotographers seeking exceptional imaging performance. Featuring a three-element air-spaced triplet objective with Japan Ohara FPL-53 ED glass flanked by premium optical elements, it virtually eliminates false color while delivering superior contrast and sharpness across wide fields. The included 2-element field flattener provides a flat imaging plane for edge-to-edge astrophotography performance, making it ideal for detailed solar system imaging as well as deep-sky object capture. With its dual-speed Helinear track focuser featuring zero image shift and a rotatable captain's wheel design, this optical tube assembly delivers professional-grade imaging capabilities at a remarkable value.
Specifications
| Aperture | 150 mm |
| Focal length | 1050 mm |
| Focal ratio | f/7 |
| Optical design | Triplet Super-Apochromatic (APO) |
| Optical Elements | 3-element air-spaced |
| Glass Type | Japan Ohara FPL-53 ED glass primary element |
| Lens Coatings | Metallic High-Transmission Coatings (MHTC) |
| Focuser Type | 3.4-inch dual-speed rack-and-pinion Helinear track |
| Field Flattener | 2-element ED doublet thread-on |
| Image Circle | 43 mm |
| Back Focus | 100 mm |
| Weight | 32 lb |
| Optical Tube Diameter | 7.9 mm |
| Included Accessories | Field flattener, tube rings, D-style dovetail, 8x50 right-angle finderscope, M48 camera adapter, 2-inch dielectric diagonal, padded hard case |
| Warranty | 2 |