telescopecomparison · 2-way
SharpStar 61EDPH III vs Askar 60F
SharpStar
61EDPH III
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Key differences
-18% focal length
Faster by 1.3 f-stops
Specifications
| Specification | SharpStar 61EDPH III | Askar 60F |
|---|---|---|
| Optics | ||
| Type | Refractor | Refractor |
| Optical design | Doublet APO | Quadruplet Petzval |
| Aperture | 61mm | 60mm |
| Focal length | 335mm | 408mm |
| Native f/ratio | f/5.5 | f/6.8 |
| Image circle | 32mm | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 2.4kg | 2.5kg |
Advantages of SharpStar 61EDPH III
- Wider field — 335mm vs 408mm focal length
- Faster optics at f/5.5 vs f/6.8
Advantages of Askar 60F
- Tighter framing — 408mm vs 335mm focal length
- Larger image circle (44mm) — supports bigger sensors
Best for — SharpStar 61EDPH III
- Wide-field nebulae and Milky Way regions
Best for — Askar 60F
- Large emission nebulae and star clusters
- Full-frame astro cameras and DSLRs
SharpStar 61EDPH III — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 6.16° × 4.11°Scale: 2.32"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 4.02° × 2.69°Scale: 2.32"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.93° × 1.93°Scale: 2.32"/px
Askar 60F — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 5.06° × 3.37°Scale: 1.90"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 3.30° × 2.20°Scale: 1.90"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.59° × 1.59°Scale: 1.90"/px
SharpStar 61EDPH III — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Askar 60F — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
