telescope
William Optics
RedCat 61 WIFD
61mm Petzval APO · 300mm f/4.9
Petzval astrograph; native full-frame.
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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 APO |
| Aperture | 61mm |
| Focal length | 300mm |
| Native f/ratio | f/4.9 |
| Image circle | 45mm |
| Full-frame support | Yes |
| Physical | |
| Weight | 2.0kg |
Typical FOV & image scale
With Full-frame (36×24mm, 3.76µm)
FOV 6.88° × 4.58°
Scale 2.59″/px
With APS-C (23.5×15.7mm, 3.76µm)
FOV 4.49° × 3.00°
Scale 2.59″/px
With IMX533 square (11.3×11.3mm, 3.76µm)
FOV 2.16° × 2.16°
Scale 2.59″/px
Recommended accessories
- William Optics Flat 6AIIIflattener · 1× focal lengthUse with this telescopecommunity reported
Typical targets
- M44 — Beehive ClusterOpen Cluster · 95′Plan this target
- M8 — Lagoon NebulaEmission Nebula · 90′Plan this target
- M24 — Sagittarius Star CloudOpen Cluster · 90′Plan this target
- Sh2-157 — Lobster Claw NebulaEmission Nebula · 90′Plan this target
- M42 — Orion NebulaEmission Nebula · 85′Plan this target
- IC 5070 — Pelican NebulaEmission Nebula · 80′Plan this target
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Source: williamoptics.com