telescopecomparison · 2-way
Celestron EdgeHD 9.25 vs Unistellar Equinox 2
Celestron
EdgeHD 9.25
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Unistellar
Equinox 2
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.
Key differences
+422% focal length
+106% aperture
Slower by 6.1 f-stops
Specifications
| Specification | Celestron EdgeHD 9.25 | Unistellar Equinox 2 |
|---|---|---|
| Optics | ||
| Type | SCT | smart-telescope |
| Optical design | Aplanatic SCT | Newtonian all-in-one |
| Aperture | 235mm | 114mm |
| Focal length | 2350mm | 450mm |
| Native f/ratio | f/10.0 | f/3.9 |
| Image circle | 42mm | — |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 9.5kg | 9.0kg |
Advantages of Celestron EdgeHD 9.25
- Tighter framing — 2350mm vs 450mm focal length
- 106% more light-gathering aperture
- Larger image circle (42mm) — supports bigger sensors
Advantages of Unistellar Equinox 2
- Wider field — 450mm vs 2350mm focal length
- Faster optics at f/3.9 vs f/10
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 — Unistellar Equinox 2
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
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
Unistellar Equinox 2 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.58° × 3.06°Scale: 1.72"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.99° × 2.00°Scale: 1.72"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.44° × 1.44°Scale: 1.72"/px
Celestron EdgeHD 9.25 — recommended user
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Unistellar Equinox 2 — recommended user
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.