telescopecomparison · 2-way
Celestron RASA 14 vs Takahashi TOA-150B
Celestron
RASA 14
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi
TOA-150B
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
-28% focal length
+137% aperture
Faster by 5.1 f-stops
Specifications
| Specification | Celestron RASA 14 | Takahashi TOA-150B |
|---|---|---|
| Optics | ||
| Type | astrograph | refractor |
| Optical design | Rowe-Ackermann Schmidt Astrograph | Apo triplet |
| Aperture | 356mm | 150mm |
| Focal length | 790mm | 1100mm |
| Native f/ratio | f/2.2 | f/7.3 |
| Image circle | 52mm | 88mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 30.0kg | 13.5kg |
Advantages of Celestron RASA 14
- Wider field — 790mm vs 1100mm focal length
- 137% more light-gathering aperture
- Faster optics at f/2.22 vs f/7.3
Advantages of Takahashi TOA-150B
- Tighter framing — 1100mm vs 790mm focal length
- Larger image circle (88mm) — supports bigger sensors
- Lighter (13.5kg vs 30kg) — easier to travel with
Best for — Celestron RASA 14
- Medium-sized galaxies and planetary nebulae
- Fast imaging — short exposures per sub
- Faint-object imaging under dark skies
- Full-frame astro cameras and DSLRs
Best for — Takahashi TOA-150B
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Celestron RASA 14 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.61° × 1.74°Scale: 0.98"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.70° × 1.14°Scale: 0.98"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.82° × 0.82°Scale: 0.98"/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 RASA 14 — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Takahashi TOA-150B — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.