telescopecomparison · 2-way
Askar FRA500 vs Askar SQA106
Askar
SQA106
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-14% focal length
-15% aperture
Specifications
| Specification | Askar FRA500 | Askar SQA106 |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Petzval Quintuplet APO | Quadruplet astrograph FPL-51 |
| Aperture | 90mm | 106mm |
| Focal length | 500mm | 580mm |
| Native f/ratio | f/5.6 | f/5.5 |
| Image circle | 60mm | 60mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 5.4kg | 6.5kg |
Advantages of Askar FRA500
- Wider field — 500mm vs 580mm focal length
- Lighter (5.4kg vs 6.5kg) — easier to travel with
Advantages of Askar SQA106
- Tighter framing — 580mm vs 500mm focal length
- 18% more light-gathering aperture
Best for — Askar FRA500
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — Askar SQA106
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Askar FRA500 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.13° × 2.75°Scale: 1.55"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.69° × 1.80°Scale: 1.55"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.29° × 1.29°Scale: 1.55"/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
Askar FRA500 — recommended user
Best suited for beginners and wide-field enthusiasts running a backyard imaging setup.
Askar SQA106 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.