telescopecomparison · 2-way
Askar 80PHQ vs Borg 107FL
Askar
80PHQ
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Borg
107FL
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Key differences
-25% aperture
Slower by 1.9 f-stops
Specifications
| Specification | Askar 80PHQ | Borg 107FL |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Petzval quintuplet FPL-51 | Apo doublet fluorite |
| Aperture | 80mm | 107mm |
| Focal length | 600mm | 600mm |
| Native f/ratio | f/7.5 | f/5.6 |
| Image circle | 44mm | — |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 4.5kg | 3.5kg |
Advantages of Askar 80PHQ
- Larger image circle (44mm) — supports bigger sensors
Advantages of Borg 107FL
- 34% more light-gathering aperture
- Faster optics at f/5.6 vs f/7.5
- Lighter (3.5kg vs 4.5kg) — easier to travel with
Best for — Askar 80PHQ
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Borg 107FL
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
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
Borg 107FL — 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 80PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.
Borg 107FL — recommended user
Best suited for intermediate imagers building a versatile kit running a portable travel rig.