1.7× R extender to convert an FOA-60 to an FOA-60Q: 900 mm at F/D 15, four elements in two groups, and a 44 mm image circle.
CHF 460.45incl. Swiss VAT
Part Number TKA28595
Will be ordered for you
Delivery time: 5 to 7 business days
Estimated shipping: Between November 23 and 24, 2026
The Takahashi R 1.7× extender extends the FOA-60’s focal length to 900 mm, resulting in an F/D ratio of 15, to match the optical configuration of the FOA-60Q. Its four lenses in two groups improve correction across the entire field of view and allow it to be used for both observation and photography. The specified image circle measures 44 mm.
The extender screws between the FOA-60’s objective lens and its eyepiece holder. It is intended for owners of this telescope who wish to upgrade to the Q configuration. To connect a camera or video camera, refer to the FOA-60Q diagram.
| Features | Value |
|---|---|
| Reference | TKA28595 |
| Type | R 1.7× Extender |
| Starting Lens | FOA-60 |
| Configuration Achieved | FOA-60Q |
| Resulting focus | 900 mm |
| Resulting focal ratio | F/D 15 |
| Extender Formula | 4 lenses in 2 groups |
| Image circle | 44 mm |
Here are a few accessories we've selected for this model, depending on your needs.
Compatible FOA-60 eyepiece, sold separately. The extender converts it to an FOA-60Q configuration; it is already included with the complete FOA-60Q. Check the connections according to the Takahashi diagram.
