telescopecomparison · 2-way
Vixen SD103S vs Takahashi FC-100DZ
Vixen
SD103S
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Takahashi
FC-100DZ
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Specifications
| Specification | Vixen SD103S | Takahashi FC-100DZ |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo doublet SD | Apo doublet fluorite |
| Aperture | 103mm | 100mm |
| Focal length | 795mm | 800mm |
| Native f/ratio | f/7.7 | f/8.0 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 4.0kg | 3.3kg |
Advantages of Vixen SD103S
Closely matched on the compared specs.
Advantages of Takahashi FC-100DZ
- Lighter (3.3kg vs 4kg) — easier to travel with
Best for — Vixen SD103S
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Takahashi FC-100DZ
- Medium-sized galaxies and planetary nebulae
- High-resolution long-exposure work
Vixen SD103S — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.59° × 1.73°Scale: 0.98"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.69° × 1.13°Scale: 0.98"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.81° × 0.81°Scale: 0.98"/px
Takahashi FC-100DZ — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.58° × 1.72°Scale: 0.97"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.68° × 1.12°Scale: 0.97"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.81° × 0.81°Scale: 0.97"/px
Vixen SD103S — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Takahashi FC-100DZ — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
