telescopecomparison · 2-way
Askar FRA600 vs SharpStar 100QII
Askar
FRA600
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
SharpStar
100QII
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
+9% focal length
+8% aperture
Specifications
| Specification | Askar FRA600 | SharpStar 100QII |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Petzval Quintuplet APO | Quadruplet astrograph |
| Aperture | 108mm | 100mm |
| Focal length | 600mm | 550mm |
| Native f/ratio | f/5.6 | f/5.5 |
| Image circle | 60mm | 44mm |
| Full-frame support | Yes | Yes |
| Physical | ||
| Weight | 7.8kg | 5.5kg |
Advantages of Askar FRA600
- Larger image circle (60mm) — supports bigger sensors
Advantages of SharpStar 100QII
- Lighter (5.5kg vs 7.8kg) — easier to travel with
Best for — Askar FRA600
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Best for — SharpStar 100QII
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
Askar FRA600 — 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
SharpStar 100QII — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 3.75° × 2.50°Scale: 1.41"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 2.45° × 1.64°Scale: 1.41"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.18° × 1.18°Scale: 1.41"/px
Askar FRA600 — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
SharpStar 100QII — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.