William Optics Adjustable Reducers for ZenithStar 61/73 (P-FLAT)
William Optics Adjustable Reducers for ZenithStar 61/73 (P-FLAT)
Model (Size)
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Product Description
Brand new adjustable field flattener/reducer for the William Optics Zenithstar 61/73 OTA.
These are adjustable as per the image so you can set the right spacing that you need for your camera, without the need for extension tubes.
What's in the Box
Specifications
| Model | FLAT61R | FLAT73R |
| Compatible with: | ZenithStar 61II Doublet APO | ZenithStar 73II Doublet APO |
| Filter-Sided Interface: | M48 Thread | M48 Thread |
| Telescope-Sided Interface: | M54 Thread | M63 Thread |
| Backfocus: | 56 mm |
56.8 mm |
| Adjustment Distance for DSLR and Mirrorless Camera: | 1 mm | 1.8 mm |