telescopecomparison · 2-way
Celestron C6 SCT vs Takahashi Epsilon-180ED
Takahashi
Epsilon-180ED
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.
Key differences
+200% focal length
-17% aperture
Slower by 7.2 f-stops
Specifications
| Specification | Celestron C6 SCT | Takahashi Epsilon-180ED |
|---|---|---|
| Optics | ||
| Type | sct | astrograph |
| Optical design | Schmidt-Cassegrain | Hyperbolic Newtonian |
| Aperture | 150mm | 180mm |
| Focal length | 1500mm | 500mm |
| Native f/ratio | f/10.0 | f/2.8 |
| Image circle | — | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 4.5kg | 12.5kg |
Advantages of Celestron C6 SCT
- Tighter framing — 1500mm vs 500mm focal length
- Lighter (4.5kg vs 12.5kg) — easier to travel with
Advantages of Takahashi Epsilon-180ED
- Wider field — 500mm vs 1500mm focal length
- 20% more light-gathering aperture
- Faster optics at f/2.8 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 — Takahashi Epsilon-180ED
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- 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 Epsilon-180ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.13° × 2.75°Scale: 1.55"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.69° × 1.80°Scale: 1.55"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.29° × 1.29°Scale: 1.55"/px
Celestron C6 SCT — recommended user
Best suited for experienced imagers chasing detail running a portable travel rig.
Takahashi Epsilon-180ED — recommended user
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.