telescopecomparison · 2-way
Askar 107PHQ vs Askar 80PHQ
Askar
107PHQ
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Askar
80PHQ
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
+25% focal length
+34% aperture
Faster by 0.5 f-stops
Specifications
| Specification | Askar 107PHQ | Askar 80PHQ |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Petzval quintuplet FPL-51 | Petzval quintuplet FPL-51 |
| Aperture | 107mm | 80mm |
| Focal length | 749mm | 600mm |
| Native f/ratio | f/7.0 | f/7.5 |
| Image circle | 60mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 7.5kg | 4.5kg |
Advantages of Askar 107PHQ
- Tighter framing — 749mm vs 600mm focal length
- 34% more light-gathering aperture
- Faster optics at f/7 vs f/7.5
- Larger image circle (60mm) — supports bigger sensors
Advantages of Askar 80PHQ
- Wider field — 600mm vs 749mm focal length
- Lighter (4.5kg 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 — Askar 80PHQ
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
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
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
Askar 107PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Askar 80PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.