telescopecomparison · 2-way
Askar 107PHQ vs Sky-Watcher Evolux 82ED
Askar
107PHQ
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher
Evolux 82ED
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Key differences
+50% focal length
+30% aperture
Slower by 0.9 f-stops
Specifications
| Specification | Askar 107PHQ | Sky-Watcher Evolux 82ED |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Petzval quintuplet FPL-51 | Apo doublet FPL-53 |
| Aperture | 107mm | 82mm |
| Focal length | 749mm | 499mm |
| Native f/ratio | f/7.0 | f/6.1 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 7.5kg | 3.6kg |
Advantages of Askar 107PHQ
- Tighter framing — 749mm vs 499mm focal length
- 30% more light-gathering aperture
Advantages of Sky-Watcher Evolux 82ED
- Wider field — 499mm vs 749mm focal length
- Faster optics at f/6.1 vs f/7
- Lighter (3.6kg vs 7.5kg) — easier to travel with
Best for — Askar 107PHQ
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Sky-Watcher Evolux 82ED
- Large emission nebulae and star clusters
Askar 107PHQ — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.75° × 1.84°Scale: 1.04"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.80° × 1.20°Scale: 1.04"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.86° × 0.86°Scale: 1.04"/px
Sky-Watcher Evolux 82ED — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.13° × 2.76°Scale: 1.55"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.70° × 1.80°Scale: 1.55"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.30° × 1.30°Scale: 1.55"/px
Askar 107PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Sky-Watcher Evolux 82ED — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.