telescopecomparison · 2-way
SharpStar 61EDPH III vs SharpStar 76EDPH
SharpStar
61EDPH III
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
Key differences
-20% focal length
-20% aperture
Specifications
| Specification | SharpStar 61EDPH III | SharpStar 76EDPH |
|---|---|---|
| Optics | ||
| Type | Refractor | Refractor |
| Optical design | Doublet APO | Doublet APO |
| Aperture | 61mm | 76mm |
| Focal length | 335mm | 418mm |
| Native f/ratio | f/5.5 | f/5.5 |
| Image circle | 32mm | 42mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 2.4kg | 3.2kg |
Advantages of SharpStar 61EDPH III
- Wider field — 335mm vs 418mm focal length
- Lighter (2.4kg vs 3.2kg) — easier to travel with
Advantages of SharpStar 76EDPH
- Tighter framing — 418mm vs 335mm focal length
- 25% more light-gathering aperture
- Larger image circle (42mm) — supports bigger sensors
Best for — SharpStar 61EDPH III
- Wide-field nebulae and Milky Way regions
Best for — SharpStar 76EDPH
- 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
SharpStar 76EDPH — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 4.93° × 3.29°Scale: 1.86"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 3.22° × 2.15°Scale: 1.86"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 1.55° × 1.55°Scale: 1.86"/px
SharpStar 61EDPH III — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
SharpStar 76EDPH — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.