telescopecomparison · 2-way
Takahashi FC-100DL vs Borg 107FL
Takahashi
FC-100DL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Borg
107FL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+50% focal length
-7% aperture
Slower by 3.4 f-stops
Specifications
| Specification | Takahashi FC-100DL | Borg 107FL |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet fluorite | Apo doublet fluorite |
| Aperture | 100mm | 107mm |
| Focal length | 900mm | 600mm |
| Native f/ratio | f/9.0 | f/5.6 |
| Image circle | 44mm | — |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 3.3kg | 3.5kg |
Advantages of Takahashi FC-100DL
- Tighter framing — 900mm vs 600mm focal length
- Larger image circle (44mm) — supports bigger sensors
Advantages of Borg 107FL
- Wider field — 600mm vs 900mm focal length
- Faster optics at f/5.6 vs f/9
Best for — Takahashi FC-100DL
- Medium-sized galaxies and planetary nebulae
- High-resolution long-exposure work
Best for — Borg 107FL
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Takahashi FC-100DL — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.29° × 1.53°Scale: 0.86"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.50° × 1.00°Scale: 0.86"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.72° × 0.72°Scale: 0.86"/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 FC-100DL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Borg 107FL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.