telescopecomparison · 2-way
Sky-Watcher Esprit 120ED vs Sky-Watcher Quattro 250P
Sky-Watcher
Esprit 120ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher
Quattro 250P
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
-16% focal length
-52% aperture
Slower by 3.0 f-stops
Specifications
| Specification | Sky-Watcher Esprit 120ED | Sky-Watcher Quattro 250P |
|---|---|---|
| Optics | ||
| Type | Refractor | newtonian |
| Optical design | Triplet APO | Newtonian astrograph |
| Aperture | 120mm | 250mm |
| Focal length | 840mm | 1000mm |
| Native f/ratio | f/7.0 | f/4.0 |
| Image circle | 44mm | — |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 11.5kg | 15.5kg |
Advantages of Sky-Watcher Esprit 120ED
- Wider field — 840mm vs 1000mm focal length
- Larger image circle (44mm) — supports bigger sensors
- Lighter (11.5kg vs 15.5kg) — easier to travel with
Advantages of Sky-Watcher Quattro 250P
- Tighter framing — 1000mm vs 840mm focal length
- 108% more light-gathering aperture
- Faster optics at f/4 vs f/7
Best for — Sky-Watcher Esprit 120ED
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Sky-Watcher Quattro 250P
- Medium-sized galaxies and planetary nebulae
- Fast imaging — short exposures per sub
- Faint-object imaging under dark skies
- 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
Sky-Watcher Quattro 250P — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.06° × 1.38°Scale: 0.78"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.35° × 0.90°Scale: 0.78"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.65° × 0.65°Scale: 0.78"/px
Sky-Watcher Esprit 120ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher Quattro 250P — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.