William Optics Ultra Flat 91 (0.79x Reducer)
Key specifications
| Accessory type | Flattener/Reducer |
|---|---|
| Weight | 1.14 kg |
| Path length | 105.5 mm |
| Back focus | 56.18 mm |
| Factor | 0.79 × |
All specifications
| Interface | M83x1 telescope side; M54x0.75 T-mount camera side |
|---|
About
A 0.79x reducer-flattener of four elements in a single group, threading to the telescope at M83x1 and presenting an M54x0.75 T-mount to the camera. Covers full frame with 105.5 mm of optical length. Now discontinued.
Where to buy
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