telescopecomparison · 2-way
Celestron C6 SCT vs Takahashi TOA-150B
Takahashi
TOA-150B
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
+36% focal length
Slower by 2.7 f-stops
Specifications
| Specification | Celestron C6 SCT | Takahashi TOA-150B |
|---|---|---|
| Optics | ||
| Type | sct | refractor |
| Optical design | Schmidt-Cassegrain | Apo triplet |
| Aperture | 150mm | 150mm |
| Focal length | 1500mm | 1100mm |
| Native f/ratio | f/10.0 | f/7.3 |
| Image circle | — | 88mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 4.5kg | 13.5kg |
Advantages of Celestron C6 SCT
- Tighter framing — 1500mm vs 1100mm focal length
- Lighter (4.5kg vs 13.5kg) — easier to travel with
Advantages of Takahashi TOA-150B
- Wider field — 1100mm vs 1500mm focal length
- Faster optics at f/7.3 vs f/10
- Larger image circle (88mm) — supports bigger sensors
Best for — Celestron C6 SCT
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
Best for — Takahashi TOA-150B
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Celestron C6 SCT — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.38° × 0.92°Scale: 0.52"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.90° × 0.60°Scale: 0.52"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.43° × 0.43°Scale: 0.52"/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
Celestron C6 SCT — recommended user
Best suited for experienced imagers chasing detail running a portable travel rig.
Takahashi TOA-150B — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.