telescopecomparison · 2-way
SharpStar 140PH vs Askar SQA106
SharpStar
140PH
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Askar
SQA106
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+69% focal length
+32% aperture
Slower by 1.5 f-stops
Specifications
| Specification | SharpStar 140PH | Askar SQA106 |
|---|---|---|
| Optics | ||
| Type | refractor | refractor |
| Optical design | Apo triplet FPL-53 | Quadruplet astrograph FPL-51 |
| Aperture | 140mm | 106mm |
| Focal length | 980mm | 580mm |
| Native f/ratio | f/7.0 | f/5.5 |
| Image circle | 52mm | 60mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 9.5kg | 6.5kg |
Advantages of SharpStar 140PH
- Tighter framing — 980mm vs 580mm focal length
- 32% more light-gathering aperture
Advantages of Askar SQA106
- Wider field — 580mm vs 980mm focal length
- Faster optics at f/5.5 vs f/7
- Larger image circle (60mm) — supports bigger sensors
- Lighter (6.5kg vs 9.5kg) — easier to travel with
Best for — SharpStar 140PH
- Medium-sized galaxies and planetary nebulae
- Full-frame astro cameras and DSLRs
Best for — Askar SQA106
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
SharpStar 140PH — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 2.10° × 1.40°Scale: 0.79"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 1.37° × 0.92°Scale: 0.79"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 0.66° × 0.66°Scale: 0.79"/px
Askar SQA106 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.56° × 2.37°Scale: 1.34"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.32° × 1.55°Scale: 1.34"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.12° × 1.12°Scale: 1.34"/px
SharpStar 140PH — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Askar SQA106 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.