RedCat 61
William Optics
From $1,208.00
2 stores
In stock
The William Optics RedCat 61 features the patented Internal Focus Design (WIFD) and an image circle of 46mm, making it an extremely robust wide field imaging telescope capable of producing fantastic images. With a focal length of 300mm and focal ratio of f/4.9, it is best used for wide-field nebulae projects and only the biggest galaxies. Featuring a 61mm aperture and fully multi-coated quadruplet lens with FPL-53 glass, this apochromatic refractor delivers crisp, color-accurate images with minimal chromatic aberration. The WIFD focuser design makes the RedCat 61 compatible with autofocuser options like the ZWO EAF right out of the box.
Specifications
| Aperture | 61 mm |
| Image Circle | 46 mm |
| Optical Elements | 4 elements in 3 groups (2-1-1 configuration) |
| Autofocuser Compatible | ✓ |
| Weight (with rings and saddle) | 7.5 kg |
| Focuser Type | William Optics Internal Focus Design (WIFD) |
| Optical design | Quadruplet Petzval Apo |
| Focuser Travel Range | 22 mm |
| Camera Mount Threads | M54 and M48 |
| Focal length | 300 mm |
| Focus Mechanism | Dual-speed Rack and Pinion |
| Tube Length | 365 mm |
| Field Flattener | Built-in Integrated |
| Bahtinov Mask Included | ✓ |
| Glass Type | Ohara FPL-53 Synthetic Fluorite |
| 360-Degree Field Rotator | ✓ |
| Focal ratio | f/4.9 |