telescopecomparison · 2-way
Sky-Watcher Quattro 250P vs SharpStar 140PH
Sky-Watcher
Quattro 250P
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
SharpStar
140PH
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+79% aperture
Faster by 3.0 f-stops
Specifications
| Specification | Sky-Watcher Quattro 250P | SharpStar 140PH |
|---|---|---|
| Optics | ||
| Type | newtonian | refractor |
| Optical design | Newtonian astrograph | Apo triplet FPL-53 |
| Aperture | 250mm | 140mm |
| Focal length | 1000mm | 980mm |
| Native f/ratio | f/4.0 | f/7.0 |
| Image circle | — | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 15.5kg | 9.5kg |
Advantages of Sky-Watcher Quattro 250P
- 79% more light-gathering aperture
- Faster optics at f/4 vs f/7
Advantages of SharpStar 140PH
- Larger image circle (52mm) — supports bigger sensors
- Lighter (9.5kg vs 15.5kg) — easier to travel with
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
Best for — SharpStar 140PH
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
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
SharpStar 140PH — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.10° × 1.40°Scale: 0.79"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.37° × 0.92°Scale: 0.79"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.66° × 0.66°Scale: 0.79"/px
Sky-Watcher Quattro 250P — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
SharpStar 140PH — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.