telescopecomparison · 2-way
Celestron EdgeHD 8 vs Unistellar eVscope 2
Celestron
EdgeHD 8
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Unistellar
eVscope 2
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.
Key differences
+352% focal length
+78% aperture
Slower by 6.1 f-stops
Specifications
| Specification | Celestron EdgeHD 8 | Unistellar eVscope 2 |
|---|---|---|
| Optics | ||
| Type | SCT | smart-telescope |
| Optical design | Aplanatic SCT | Newtonian all-in-one |
| Aperture | 203mm | 114mm |
| Focal length | 2032mm | 450mm |
| Native f/ratio | f/10.0 | f/3.9 |
| Image circle | 42mm | — |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 6.4kg | 9.0kg |
Advantages of Celestron EdgeHD 8
- Tighter framing — 2032mm vs 450mm focal length
- 78% more light-gathering aperture
- Larger image circle (42mm) — supports bigger sensors
- Lighter (6.4kg vs 9kg) — easier to travel with
Advantages of Unistellar eVscope 2
- Wider field — 450mm vs 2032mm focal length
- Faster optics at f/3.9 vs f/10
Best for — Celestron EdgeHD 8
- 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 eVscope 2
- Large emission nebulae and star clusters
- Fast imaging — short exposures per sub
Celestron EdgeHD 8 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 1.02° × 0.68°Scale: 0.38"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 0.66° × 0.44°Scale: 0.38"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.32° × 0.32°Scale: 0.38"/px
Unistellar eVscope 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 8 — recommended user
Best suited for experienced imagers chasing detail running a backyard imaging setup.
Unistellar eVscope 2 — recommended user
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.