telescopecomparison · 2-way
Celestron EdgeHD 9.25 vs Takahashi Epsilon-160ED
Celestron
EdgeHD 9.25
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Takahashi
Epsilon-160ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+343% focal length
+47% aperture
Slower by 6.7 f-stops
Specifications
| Specification | Celestron EdgeHD 9.25 | Takahashi Epsilon-160ED |
|---|---|---|
| Optics | ||
| Type | SCT | Newtonian |
| Optical design | Aplanatic SCT | Hyperbolic astrograph |
| Aperture | 235mm | 160mm |
| Focal length | 2350mm | 530mm |
| Native f/ratio | f/10.0 | f/3.3 |
| Image circle | 42mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 9.5kg | 10.0kg |
Advantages of Celestron EdgeHD 9.25
- Tighter framing — 2350mm vs 530mm focal length
- 47% more light-gathering aperture
Advantages of Takahashi Epsilon-160ED
- Wider field — 530mm vs 2350mm focal length
- Faster optics at f/3.3 vs f/10
Best for — Celestron EdgeHD 9.25
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
- Faint-object imaging under dark skies
- Full-frame astro cameras and DSLRs
Best for — Takahashi Epsilon-160ED
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Celestron EdgeHD 9.25 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 0.88° × 0.59°Scale: 0.33"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.57° × 0.38°Scale: 0.33"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.28° × 0.28°Scale: 0.33"/px
Takahashi Epsilon-160ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.89° × 2.59°Scale: 1.46"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.54° × 1.70°Scale: 1.46"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.22° × 1.22°Scale: 1.46"/px
Celestron EdgeHD 9.25 — recommended user
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Takahashi Epsilon-160ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.