telescopecomparison · 2-way
Celestron RASA 11 vs Celestron RASA 14
Celestron
RASA 11
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Celestron
RASA 14
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
-22% focal length
-22% aperture
Specifications
| Specification | Celestron RASA 11 | Celestron RASA 14 |
|---|---|---|
| Optics | ||
| Type | astrograph | astrograph |
| Optical design | Rowe-Ackermann Schmidt Astrograph | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 279mm | 356mm |
| Focal length | 620mm | 790mm |
| Native f/ratio | f/2.2 | f/2.2 |
| Image circle | 43mm | 52mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 20.0kg | 30.0kg |
Advantages of Celestron RASA 11
- Wider field — 620mm vs 790mm focal length
- Lighter (20kg vs 30kg) — easier to travel with
Advantages of Celestron RASA 14
- Tighter framing — 790mm vs 620mm focal length
- 28% more light-gathering aperture
- Larger image circle (52mm) — supports bigger sensors
Best for — Celestron RASA 11
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Faint-object imaging under dark skies
- Full-frame astro cameras and DSLRs
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
Celestron RASA 11 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.33° × 2.22°Scale: 1.25"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.17° × 1.45°Scale: 1.25"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.04° × 1.04°Scale: 1.25"/px
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 RASA 11 — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Celestron RASA 14 — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.