telescopecomparison · 2-way
SharpStar 140PH vs Takahashi FSQ-106EDX4
SharpStar
140PH
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi
FSQ-106EDX4
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+85% focal length
+32% aperture
Slower by 2.0 f-stops
Specifications
| Specification | SharpStar 140PH | Takahashi FSQ-106EDX4 |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Apo triplet FPL-53 | Petzval APO |
| Aperture | 140mm | 106mm |
| Focal length | 980mm | 530mm |
| Native f/ratio | f/7.0 | f/5.0 |
| Image circle | 52mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 9.5kg | 7.5kg |
Advantages of SharpStar 140PH
- Tighter framing — 980mm vs 530mm focal length
- 32% more light-gathering aperture
Advantages of Takahashi FSQ-106EDX4
- Wider field — 530mm vs 980mm focal length
- Faster optics at f/5 vs f/7
- Larger image circle (88mm) — supports bigger sensors
- Lighter (7.5kg vs 9.5kg) — easier to travel with
Best for — SharpStar 140PH
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Takahashi FSQ-106EDX4
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
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
Takahashi FSQ-106EDX4 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.89° × 2.59°Scale: 1.46"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.54° × 1.70°Scale: 1.46"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.22° × 1.22°Scale: 1.46"/px
SharpStar 140PH — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Takahashi FSQ-106EDX4 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.