telescopecomparison · 2-way
Askar 80PHQ vs Explore Scientific ED80 FCD-100
Askar
80PHQ
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Explore Scientific
ED80 FCD-100
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Key differences
+25% focal length
Slower by 1.5 f-stops
Specifications
| Specification | Askar 80PHQ | Explore Scientific ED80 FCD-100 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Petzval quintuplet FPL-51 | Apo triplet FCD-100 |
| Aperture | 80mm | 80mm |
| Focal length | 600mm | 480mm |
| Native f/ratio | f/7.5 | f/6.0 |
| Image circle | 44mm | 44mm |
| Full-frame support | Yes | No |
| Physical | ||
| Weight | 4.5kg | 4.5kg |
Advantages of Askar 80PHQ
- Tighter framing — 600mm vs 480mm focal length
Advantages of Explore Scientific ED80 FCD-100
- Wider field — 480mm vs 600mm focal length
- Faster optics at f/6 vs f/7.5
Best for — Askar 80PHQ
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Explore Scientific ED80 FCD-100
- Large emission nebulae and star clusters
Askar 80PHQ — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.44° × 2.29°Scale: 1.29"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.24° × 1.50°Scale: 1.29"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.08° × 1.08°Scale: 1.29"/px
Explore Scientific ED80 FCD-100 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.30° × 2.86°Scale: 1.62"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.81° × 1.87°Scale: 1.62"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.35° × 1.35°Scale: 1.62"/px
Askar 80PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Explore Scientific ED80 FCD-100 — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.