telescopecomparison · 2-way
Celestron EdgeHD 9.25 vs Vixen R200SS
Celestron
EdgeHD 9.25
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Vixen
R200SS
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+194% focal length
+18% aperture
Slower by 6.0 f-stops
Specifications
| Specification | Celestron EdgeHD 9.25 | Vixen R200SS |
|---|---|---|
| Optics | ||
| Type | SCT | newtonian |
| Optical design | Aplanatic SCT | Newtonian astrograph |
| Aperture | 235mm | 200mm |
| Focal length | 2350mm | 800mm |
| Native f/ratio | f/10.0 | f/4.0 |
| Image circle | 42mm | — |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 9.5kg | 7.5kg |
Advantages of Celestron EdgeHD 9.25
- Tighter framing — 2350mm vs 800mm focal length
- 18% more light-gathering aperture
- Larger image circle (42mm) — supports bigger sensors
Advantages of Vixen R200SS
- Wider field — 800mm vs 2350mm focal length
- Faster optics at f/4 vs f/10
- Lighter (7.5kg vs 9.5kg) — easier to travel with
Best for — Celestron EdgeHD 9.25
- Small galaxies, planetary nebulae, lunar & planetary detail
- High-resolution long-exposure work
- Faint-object imaging under dark skies
- Full-frame astro cameras and DSLRs
Best for — Vixen R200SS
- Medium-sized galaxies and planetary nebulae
- Fast imaging — short exposures per sub
- Faint-object imaging under dark skies
Celestron EdgeHD 9.25 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 0.88° × 0.59°Scale: 0.33"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.57° × 0.38°Scale: 0.33"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.28° × 0.28°Scale: 0.33"/px
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
Celestron EdgeHD 9.25 — recommended user
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Vixen R200SS — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.