Field flattener to fit Skywatcher Evoguide 50ED only. **Not for any other telescope**Improves edge of field sharpness to reduced coma for edge to edge
pin point stars.
Extremely solid accessory that will not look out of place in any telescope kit bag.
A must have for digital imagers.
- Two Lens Field Flattener
- Fully Multi-Coated
- 28mm Flat Field
- 6º Pinpoint Stars
- Back Focal Length 17.5mm
- 1.25" (31.7mm) Internal Diameter
- M42x0.75 Exterior Thread (T2)
- Green Anodised Aluminium Screw-on End Caps
- Net Weight 150g