telescopecomparison · 2-way
Vixen R200SS vs Vixen SD103S
Vixen
R200SS
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Vixen
SD103S
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+94% aperture
Faster by 3.7 f-stops
Specifications
| Specification | Vixen R200SS | Vixen SD103S |
|---|---|---|
| Optics | ||
| Type | newtonian | refractor |
| Optical design | Newtonian astrograph | Apo doublet SD |
| Aperture | 200mm | 103mm |
| Focal length | 800mm | 795mm |
| Native f/ratio | f/4.0 | f/7.7 |
| Image circle | — | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 7.5kg | 4.0kg |
Advantages of Vixen R200SS
- 94% more light-gathering aperture
- Faster optics at f/4 vs f/7.7
Advantages of Vixen SD103S
- Larger image circle (44mm) — supports bigger sensors
- Lighter (4kg vs 7.5kg) — easier to travel with
Best for — Vixen R200SS
- Medium-sized galaxies and planetary nebulae
- Fast imaging — short exposures per sub
- Faint-object imaging under dark skies
Best for — Vixen SD103S
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Vixen R200SS — 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 — 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
Vixen R200SS — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Vixen SD103S — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.