telescope
William Optics
MiniCat 51 WIFD
51mm Petzval (6-element) · 178mm f/3.5
Ultra-wide Petzval astrograph; APS-C recommended by the manufacturer.
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Product specifications can change. Please verify specifications and compatibility with the manufacturer or retailer before purchasing.
Best for
- Wide-field nebulae and Milky Way regions
- Fast imaging — short exposures per sub
- Full-frame astro cameras and DSLRs
Specifications
| Optics | |
| Type | refractor |
| Optical design | Petzval (6-element) |
| Aperture | 51mm |
| Focal length | 178mm |
| Native f/ratio | f/3.5 |
| Image circle | 43mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 1.7kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 11.59° × 7.73°
Scale 4.36″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 7.56° × 5.05°
Scale 4.36″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 3.64° × 3.64°
Scale 4.36″/px
Typical targets
- IC 1805 — Heart NebulaEmission Nebula · 150′Plan this target
- IC 1848 — Soul NebulaEmission Nebula · 150′Plan this target
- Sh2-129 — Flying Bat NebulaEmission Nebula · 150′Plan this target
- IC 1396 — Elephant's TrunkEmission Nebula · 170′Plan this target
- NGC 1499 — California NebulaEmission Nebula · 145′Plan this target
- NGC 6960 — Veil NebulaSupernova Remnant · 180′Plan this target
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Source: williamoptics.com