telescopecomparison · 2-way
Takahashi Mewlon-210 vs Sky-Watcher Esprit 100ED
Takahashi
Mewlon-210
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Sky-Watcher
Esprit 100ED
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+339% focal length
+110% aperture
Slower by 6.0 f-stops
Specifications
| Specification | Takahashi Mewlon-210 | Sky-Watcher Esprit 100ED |
|---|---|---|
| Optics | ||
| Type | cassegrain | Refractor |
| Optical design | Dall-Kirkham | Triplet APO |
| Aperture | 210mm | 100mm |
| Focal length | 2415mm | 550mm |
| Native f/ratio | f/11.5 | f/5.5 |
| Image circle | — | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 15.5kg | 8.6kg |
Advantages of Takahashi Mewlon-210
- Tighter framing — 2415mm vs 550mm focal length
- 110% more light-gathering aperture
Advantages of Sky-Watcher Esprit 100ED
- Wider field — 550mm vs 2415mm focal length
- Faster optics at f/5.5 vs f/11.5
- Larger image circle (44mm) — supports bigger sensors
- Lighter (8.6kg 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 — Sky-Watcher Esprit 100ED
- Large emission nebulae and star clusters
- 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
Sky-Watcher Esprit 100ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.75° × 2.50°Scale: 1.41"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.45° × 1.64°Scale: 1.41"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.18° × 1.18°Scale: 1.41"/px
Takahashi Mewlon-210 — recommended user
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Sky-Watcher Esprit 100ED — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.