telescopecomparison · 2-way
Takahashi Mewlon-210 vs Borg 107FL
Takahashi
Mewlon-210
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Borg
107FL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+303% focal length
+96% aperture
Slower by 5.9 f-stops
Specifications
| Specification | Takahashi Mewlon-210 | Borg 107FL |
|---|---|---|
| Optics | ||
| Type | cassegrain | refractor |
| Optical design | Dall-Kirkham | Apo doublet fluorite |
| Aperture | 210mm | 107mm |
| Focal length | 2415mm | 600mm |
| Native f/ratio | f/11.5 | f/5.6 |
| Image circle | — | — |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 15.5kg | 3.5kg |
Advantages of Takahashi Mewlon-210
- Tighter framing — 2415mm vs 600mm focal length
- 96% more light-gathering aperture
Advantages of Borg 107FL
- Wider field — 600mm vs 2415mm focal length
- Faster optics at f/5.6 vs f/11.5
- Lighter (3.5kg 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 — Borg 107FL
- 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
Borg 107FL — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.44° × 2.29°Scale: 1.29"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.24° × 1.50°Scale: 1.29"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.08° × 1.08°Scale: 1.29"/px
Takahashi Mewlon-210 — recommended user
Best suited for experienced imagers chasing detail running a permanent observatory setup.
Borg 107FL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.