telescopecomparison · 2-way
SharpStar 61EDPH III vs SharpStar 100QII
SharpStar
61EDPH III
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
SharpStar
100QII
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.
Key differences
-39% focal length
-39% aperture
Specifications
| Specification | SharpStar 61EDPH III | SharpStar 100QII |
|---|---|---|
| Optics | ||
| Type | Refractor | refractor |
| Optical design | Doublet APO | Quadruplet astrograph |
| Aperture | 61mm | 100mm |
| Focal length | 335mm | 550mm |
| Native f/ratio | f/5.5 | f/5.5 |
| Image circle | 32mm | 44mm |
| Full-frame support | No | Yes |
| Physical | ||
| Weight | 2.4kg | 5.5kg |
Advantages of SharpStar 61EDPH III
- Wider field — 335mm vs 550mm focal length
- Lighter (2.4kg vs 5.5kg) — easier to travel with
Advantages of SharpStar 100QII
- Tighter framing — 550mm vs 335mm focal length
- 64% more light-gathering aperture
- Larger image circle (44mm) — supports bigger sensors
Best for — SharpStar 61EDPH III
- Wide-field nebulae and Milky Way regions
Best for — SharpStar 100QII
- 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 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
SharpStar 61EDPH III — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
SharpStar 100QII — recommended user
Best suited for intermediate imagers building a versatile kit running a backyard imaging setup.