telescopecomparison · 2-way
Askar FRA600 vs Takahashi FSQ-106EDX4
Askar
FRA600
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
+13% focal length
Slower by 0.6 f-stops
Specifications
| Specification | Askar FRA600 | Takahashi FSQ-106EDX4 |
|---|---|---|
| Optics | ||
| Type | Refractor | Refractor |
| Optical design | Petzval Quintuplet APO | Petzval APO |
| Aperture | 108mm | 106mm |
| Focal length | 600mm | 530mm |
| Native f/ratio | f/5.6 | f/5.0 |
| Image circle | 60mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 7.8kg | 7.5kg |
Advantages of Askar FRA600
- Tighter framing — 600mm vs 530mm focal length
Advantages of Takahashi FSQ-106EDX4
- Wider field — 530mm vs 600mm focal length
- Faster optics at f/5 vs f/5.6
- Larger image circle (88mm) — supports bigger sensors
Best for — Askar FRA600
- Large emission nebulae and star clusters
- 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
Askar FRA600 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.44° × 2.29°Scale: 1.29"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.24° × 1.50°Scale: 1.29"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.08° × 1.08°Scale: 1.29"/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
Askar FRA600 — 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.