telescopecomparison · 2-way
Takahashi Mewlon-210 vs Takahashi Epsilon-180ED
Takahashi
Mewlon-210
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Takahashi
Epsilon-180ED
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.
Key differences
+383% focal length
+17% aperture
Slower by 8.7 f-stops
Specifications
| Specification | Takahashi Mewlon-210 | Takahashi Epsilon-180ED |
|---|---|---|
| Optics | ||
| Type | cassegrain | astrograph |
| Optical design | Dall-Kirkham | Hyperbolic Newtonian |
| Aperture | 210mm | 180mm |
| Focal length | 2415mm | 500mm |
| Native f/ratio | f/11.5 | f/2.8 |
| Image circle | — | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 15.5kg | 12.5kg |
Advantages of Takahashi Mewlon-210
- Tighter framing — 2415mm vs 500mm focal length
- 17% more light-gathering aperture
Advantages of Takahashi Epsilon-180ED
- Wider field — 500mm vs 2415mm focal length
- Faster optics at f/2.8 vs f/11.5
- Larger image circle (44mm) — supports bigger sensors
- Lighter (12.5kg vs 15.5kg) — easier to travel with
Best for — Takahashi Mewlon-210
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
- Faint-object imaging under dark skies
Best for — Takahashi Epsilon-180ED
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Takahashi Mewlon-210 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 0.85° × 0.57°Scale: 0.32"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.56° × 0.37°Scale: 0.32"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.27° × 0.27°Scale: 0.32"/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
Takahashi Mewlon-210 — recommended user
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Takahashi Epsilon-180ED — recommended user
Best suited for beginners and wide-field enthusiasts running a permanent observatory setup.