From $857.95
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The Sky-Watcher HAC125DX is a compact, high-speed astrograph utilizing the Honders Advanced Catadioptric optical design that combines hybrid refractive and reflective surfaces to deliver sharp, ultra-fast wide-field imaging in a lightweight package. Featuring a lightning-fast f/2 focal ratio, it allows you to capture images 5x faster than a standard f/4.9 optic. Designed for wide-field astrophotography with lightweight equatorial mounts, this ultra-portable setup is ideal for anyone seeking an ultra-fast, ultra-compact imaging rig. The optical design utilizes a Mangin mirror with carefully engineered refractive components and a front camera placement that forgoes light-path folding, delivering an incredibly fast f/2 focal ratio with superbly sharp images across the field.
| Image Circle | 16 mm |
| Mirror Coating | Radiant Aluminum Quartz (RAQ) |
| Secondary Obstruction Area | 0.425 |
| Mount type | Clamshell rings with V-style dovetail |
| Focal length | 250 mm |
| Length | 15.7 in |
| Optical Quality | Diffraction Limited (1/4 wave) |
| Optical design | Honders Advanced Catadioptric (HAC) |
| Mirror Type | Mangin |
| Collimatable Primary Cell | ✓ |
| Focal ratio | f/2 |
| Tube Diameter | 6.3 mm |
| Aperture | 125 mm |
| Weight | 8.4 lb |
| Mirror Reflectivity | 0.94% |
| Corrector Coating | High Transmission Multi-Coating (HTMC) |
| Focuser Type | Primary Mirror Helical (Rear-mounted) |
| Secondary Obstruction Diameter | 53 mm |