telescopecomparison · 2-way
Sky-Watcher Esprit 120ED vs ZWO FF107 APO
Sky-Watcher
Esprit 120ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
ZWO
FF107 APO
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+12% focal length
+12% aperture
Specifications
| Specification | Sky-Watcher Esprit 120ED | ZWO FF107 APO |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Triplet APO | Quintuplet FCD-100 |
| Aperture | 120mm | 107mm |
| Focal length | 840mm | 749mm |
| Native f/ratio | f/7.0 | f/7.0 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 11.5kg | 7.2kg |
Advantages of Sky-Watcher Esprit 120ED
- Tighter framing — 840mm vs 749mm focal length
- 12% more light-gathering aperture
Advantages of ZWO FF107 APO
- Wider field — 749mm vs 840mm focal length
- Lighter (7.2kg vs 11.5kg) — easier to travel with
Best for — Sky-Watcher Esprit 120ED
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — ZWO FF107 APO
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Sky-Watcher Esprit 120ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.46° × 1.64°Scale: 0.92"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.60° × 1.07°Scale: 0.92"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.77° × 0.77°Scale: 0.92"/px
ZWO FF107 APO — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.75° × 1.84°Scale: 1.04"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.80° × 1.20°Scale: 1.04"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.86° × 0.86°Scale: 1.04"/px
Sky-Watcher Esprit 120ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
ZWO FF107 APO — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
