telescopecomparison · 2-way
Celestron RASA 14 vs Celestron C6 SCT
Celestron
RASA 14
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
-47% focal length
+137% aperture
Faster by 7.8 f-stops
Specifications
| Specification | Celestron RASA 14 | Celestron C6 SCT |
|---|---|---|
| Optics | ||
| Type | astrograph | sct |
| Optical design | Rowe-Ackermann Schmidt Astrograph | Schmidt-Cassegrain |
| Aperture | 356mm | 150mm |
| Focal length | 790mm | 1500mm |
| Native f/ratio | f/2.2 | f/10.0 |
| Image circle | 52mm | — |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 30.0kg | 4.5kg |
Advantages of Celestron RASA 14
- Wider field — 790mm vs 1500mm focal length
- 137% more light-gathering aperture
- Faster optics at f/2.22 vs f/10
- Larger image circle (52mm) — supports bigger sensors
Advantages of Celestron C6 SCT
- Tighter framing — 1500mm vs 790mm focal length
- Lighter (4.5kg 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 — Celestron C6 SCT
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
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
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
Celestron RASA 14 — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Celestron C6 SCT — recommended user
Best suited for experienced imagers chasing detail running a portable travel rig.