William Optics New Adjustable Flat73A for Z73
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This dedicated 2" field flattener by William Optics is precisely engineered for full-frame imaging with their ZenithStar 73 Apo telescope.
Direct M63 male thread ensures a secure, threaded connection to the Z73 telescope.
➤ Camera-side connection: Male M48x0.75 thread allows attachment of Canon or Nikon DSLRs using a camera-specific M48 T-ring (sold separately).
➤ Provides the correct 55mm working distance when paired with a compatible T-ring.
➤ ?? Not compatible with smaller M42 T-thread rings.
➤ For cameras with shorter back-focus, additional spacers/adapters will be required.
➤ True 1:1 flattener – no focal length reduction.
➤ Built-in female M48x0.75 filter thread supports standard 2" filters (must be bidirectional since filter orientation faces the telescope).
➤ Integrated rotator mechanism eliminates the need for a separate camera rotator
➤ Specifically designed for William Optics ZenithStar 73
| Parameter | Value |
|---|---|
| Back Focus | 66.2 mm |
| Adjustable Distance | 11.4 mm |
| Image Circle | ≈ 43 mm |
| Lens Design | 2 groups, 2 elements |
| Flattener Length | 39.5 mm |
| Rotator / Adapter Length | 26 mm |
| Telescope Thread | M63 x 1 x 6 mm |
| Camera Thread (T-Mount) | M48 x 0.75 x 4 mm |
| Supported T-Mounts | Canon EF, RF / Nikon F, Z / Sony E / Pentax K / MFT / FUJI X |
| Camera Format Compatibility | Full Frame and larger |
| Weight | 328.8 g / 0.72 lbs |
Rotator | Shop at Vorion Scientific India" style="height:300px;object-fit: cover;">
Filter Drawer Tray | Shop at Vorion Scientific India" style="height:300px;object-fit: cover;">
