telescopecomparison · 2-way
Celestron C6 SCT vs Sky-Watcher Esprit 150ED
Sky-Watcher
Esprit 150ED
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.
Key differences
+43% focal length
Slower by 3.0 f-stops
Specifications
| Specification | Celestron C6 SCT | Sky-Watcher Esprit 150ED |
|---|---|---|
| Optics | ||
| Type | sct | Refractor |
| Optical design | Schmidt-Cassegrain | Triplet APO |
| Aperture | 150mm | 150mm |
| Focal length | 1500mm | 1050mm |
| Native f/ratio | f/10.0 | f/7.0 |
| Image circle | — | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 4.5kg | 17.0kg |
Advantages of Celestron C6 SCT
- Tighter framing — 1500mm vs 1050mm focal length
- Lighter (4.5kg vs 17kg) — easier to travel with
Advantages of Sky-Watcher Esprit 150ED
- Wider field — 1050mm vs 1500mm focal length
- Faster optics at f/7 vs f/10
- Larger image circle (44mm) — supports bigger sensors
Best for — Celestron C6 SCT
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
Best for — Sky-Watcher Esprit 150ED
- 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
Sky-Watcher Esprit 150ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.96° × 1.31°Scale: 0.74"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.28° × 0.86°Scale: 0.74"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.62° × 0.62°Scale: 0.74"/px
Celestron C6 SCT — recommended user
Best suited for experienced imagers chasing detail running a portable travel rig.
Sky-Watcher Esprit 150ED — recommended user
Best suited for intermediate imagers building a versatile kit running a permanent observatory setup.