telescopecomparison · 2-way
Sky-Watcher Quattro 250P vs Takahashi FC-100DL
Sky-Watcher
Quattro 250P
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi
FC-100DL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+11% focal length
+150% aperture
Faster by 5.0 f-stops
Specifications
| Specification | Sky-Watcher Quattro 250P | Takahashi FC-100DL |
|---|---|---|
| Optics | ||
| Type | newtonian | refractor |
| Optical design | Newtonian astrograph | Apo doublet fluorite |
| Aperture | 250mm | 100mm |
| Focal length | 1000mm | 900mm |
| Native f/ratio | f/4.0 | f/9.0 |
| Image circle | — | 44mm |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 15.5kg | 3.3kg |
Advantages of Sky-Watcher Quattro 250P
- Tighter framing — 1000mm vs 900mm focal length
- 150% more light-gathering aperture
- Faster optics at f/4 vs f/9
Advantages of Takahashi FC-100DL
- Larger image circle (44mm) — supports bigger sensors
- Lighter (3.3kg 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 — Takahashi FC-100DL
- Medium-sized galaxies and planetary nebulae
- High-resolution long-exposure work
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
Takahashi FC-100DL — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.29° × 1.53°Scale: 0.86"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.50° × 1.00°Scale: 0.86"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.72° × 0.72°Scale: 0.86"/px
Sky-Watcher Quattro 250P — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi FC-100DL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.