telescopecomparison · 2-way
Takahashi FSQ-130ED vs William Optics FLT 120
Takahashi
FSQ-130ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics
FLT 120
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-17% focal length
+8% aperture
Faster by 1.5 f-stops
Specifications
| Specification | Takahashi FSQ-130ED | William Optics FLT 120 |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Petzval quadruplet | Triplet APO |
| Aperture | 130mm | 120mm |
| Focal length | 650mm | 780mm |
| Native f/ratio | f/5.0 | f/6.5 |
| Image circle | 88mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 11.0kg | 7.7kg |
Advantages of Takahashi FSQ-130ED
- Wider field — 650mm vs 780mm focal length
- Faster optics at f/5 vs f/6.5
- Larger image circle (88mm) — supports bigger sensors
Advantages of William Optics FLT 120
- Tighter framing — 780mm vs 650mm focal length
- Lighter (7.7kg vs 11kg) — easier to travel with
Best for — Takahashi FSQ-130ED
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Best for — William Optics FLT 120
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Takahashi FSQ-130ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.17° × 2.12°Scale: 1.19"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.07° × 1.38°Scale: 1.19"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.00° × 1.00°Scale: 1.19"/px
William Optics FLT 120 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.64° × 1.76°Scale: 0.99"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.73° × 1.15°Scale: 0.99"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.83° × 0.83°Scale: 0.99"/px
Takahashi FSQ-130ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics FLT 120 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
