telescopecomparison · 2-way
Askar 130PHQ vs William Optics FLT 120
Askar
130PHQ
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics
FLT 120
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+28% focal length
+8% aperture
Slower by 1.2 f-stops
Specifications
| Specification | Askar 130PHQ | William Optics FLT 120 |
|---|---|---|
| Optics | ||
| Type | refractor | Refractor |
| Optical design | Petzval quintuplet FPL-51 | Triplet APO |
| Aperture | 130mm | 120mm |
| Focal length | 1000mm | 780mm |
| Native f/ratio | f/7.7 | f/6.5 |
| Image circle | 60mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 10.2kg | 7.7kg |
Advantages of Askar 130PHQ
- Tighter framing — 1000mm vs 780mm focal length
- Larger image circle (60mm) — supports bigger sensors
Advantages of William Optics FLT 120
- Wider field — 780mm vs 1000mm focal length
- Faster optics at f/6.5 vs f/7.7
- Lighter (7.7kg vs 10.2kg) — easier to travel with
Best for — Askar 130PHQ
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — William Optics FLT 120
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Askar 130PHQ — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.06° × 1.38°Scale: 0.78"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.35° × 0.90°Scale: 0.78"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.65° × 0.65°Scale: 0.78"/px
William Optics FLT 120 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.64° × 1.76°Scale: 0.99"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.73° × 1.15°Scale: 0.99"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.83° × 0.83°Scale: 0.99"/px
Askar 130PHQ — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
William Optics FLT 120 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
