telescopecomparison · 2-way
William Optics FLT 156 vs Sky-Watcher Esprit 150ED
William Optics
FLT 156
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher
Esprit 150ED
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Specifications
| Specification | William Optics FLT 156 | Sky-Watcher Esprit 150ED |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Apo triplet FPL-53 | Triplet APO |
| Aperture | 156mm | 150mm |
| Focal length | 1085mm | 1050mm |
| Native f/ratio | f/7.0 | f/7.0 |
| Image circle | 52mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 11.5kg | 17.0kg |
Advantages of William Optics FLT 156
- Larger image circle (52mm) — supports bigger sensors
- Lighter (11.5kg vs 17kg) — easier to travel with
Advantages of Sky-Watcher Esprit 150ED
Closely matched on the compared specs.
Best for — William Optics FLT 156
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Sky-Watcher Esprit 150ED
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
William Optics FLT 156 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.90° × 1.27°Scale: 0.71"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.24° × 0.83°Scale: 0.71"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.60° × 0.60°Scale: 0.71"/px
Sky-Watcher Esprit 150ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.96° × 1.31°Scale: 0.74"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.28° × 0.86°Scale: 0.74"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.62° × 0.62°Scale: 0.74"/px
William Optics FLT 156 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher Esprit 150ED — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.