telescopecomparison · 2-way
Takahashi FC-100DL vs Tele Vue NP101is
Takahashi
FC-100DL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Tele Vue
NP101is
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+67% focal length
Slower by 3.6 f-stops
Specifications
| Specification | Takahashi FC-100DL | Tele Vue NP101is |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Apo doublet fluorite | Petzval |
| Aperture | 100mm | 101mm |
| Focal length | 900mm | 540mm |
| Native f/ratio | f/9.0 | f/5.4 |
| Image circle | 44mm | 40mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 3.3kg | 4.5kg |
Advantages of Takahashi FC-100DL
- Tighter framing — 900mm vs 540mm focal length
- Lighter (3.3kg vs 4.5kg) — easier to travel with
Advantages of Tele Vue NP101is
- Wider field — 540mm vs 900mm focal length
- Faster optics at f/5.4 vs f/9
Best for — Takahashi FC-100DL
- Medium-sized galaxies and planetary nebulae
- High-resolution long-exposure work
Best for — Tele Vue NP101is
- 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
Tele Vue NP101is — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.82° × 2.55°Scale: 1.44"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.49° × 1.67°Scale: 1.44"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.20° × 1.20°Scale: 1.44"/px
Takahashi FC-100DL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Tele Vue NP101is — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.