telescopecomparison · 2-way
Takahashi FSQ-85EDX vs Takahashi TOA-150B
Takahashi
FSQ-85EDX
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Takahashi
TOA-150B
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
-59% focal length
-43% aperture
Faster by 2.0 f-stops
Specifications
| Specification | Takahashi FSQ-85EDX | Takahashi TOA-150B |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Petzval APO | Apo triplet |
| Aperture | 85mm | 150mm |
| Focal length | 450mm | 1100mm |
| Native f/ratio | f/5.3 | f/7.3 |
| Image circle | 44mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 4.0kg | 13.5kg |
Advantages of Takahashi FSQ-85EDX
- Wider field — 450mm vs 1100mm focal length
- Faster optics at f/5.3 vs f/7.3
- Lighter (4kg vs 13.5kg) — easier to travel with
Advantages of Takahashi TOA-150B
- Tighter framing — 1100mm vs 450mm focal length
- 76% more light-gathering aperture
- Larger image circle (88mm) — supports bigger sensors
Best for — Takahashi FSQ-85EDX
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Takahashi TOA-150B
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Takahashi FSQ-85EDX — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.58° × 3.06°Scale: 1.72"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.99° × 2.00°Scale: 1.72"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.44° × 1.44°Scale: 1.72"/px
Takahashi TOA-150B — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.88° × 1.25°Scale: 0.71"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.22° × 0.82°Scale: 0.71"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.59° × 0.59°Scale: 0.71"/px
Takahashi FSQ-85EDX — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Takahashi TOA-150B — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.