Some imaging assemblies feature an M54x0.75 female thread, especially when they include a wide off-axis guider or a large-format filter wheel. Takahashi doesn't offer an adapter ring specifically for these mountings on the output of its CA-35 photo adapters with M54x0.75 female threads (TSA, TOA, FSQ scopes, etc.). We therefore offer you this M54-M54 (M/M) conversion ring if you wish to make the mechanical junction between a M54 CMOS/CCD camera mount and a Takahashi telescope. This ring is compatible with all telescopes offering a photo adapter with M54 female thread.
Its 2mm optical path distance will not compromise the performance of Takahashi (or other brands) field correctors and focal reducers, whose backfocus must be respected.
Designed by our team and manufactured in France by our partner mechanical workshop in Colmar, a specialist in high-precision machining in small series, this ring is made of aluminum and anodized in matte black.
| Characteristic | OU031 - M54-M54 ring (M/M), 2mm |
| Item number | OU031 |
| Designer and manufacturer | Optique Unterlinden |
| Mechanical input | M54x0.75 male thread |
| Mechanical output | M54x0.75 male thread |
| Optical path distance | 2mm |
| Outside diameter | 58.5 mm |
| Clear aperture | 47mm |
| Weight | 20g |
