2.7" Prime Focus Field Flattener for Legacy StarFire f6 EDFS Refractors (13027FF-EDFS)

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Approximately one week after your order.

Our 2.7" Field Flattener (13027FF-EDFS) was introduced in February 2022 for our legacy 130 f6 Starfire EDFS scopes that were produced from 1995-2001 in order to provide optimum performance with modern cameras.  It can be coupled to a variety of different DSLR and CCD cameras for truly superb images.   

The backfocus spacing for these flatteners (as measured from the rear flange) is 86.4 mm +/- 2 mm.

The bayonet male thread size at the rear is 3.725" x 24.

Use the bayonet locking ring to secure your camera into position after you have framed your image. This allows you to rotate the camera to achieve your desired composition.


35 mm SLR or DSLR Camera - For full frame Canon and Nikon DSLR's, we offer the Large 1.875" diameter SLR Adapter with Canon EOS (67RLEOS) and Nikon (67RLNIK) Bayonets .

CCD Camera - Choose the appropriate adapter to space the field flattener properly with your CCD camera. Consult Field Flatteners, TCCs & QUADTCC Imaging Train Options .

13027FF-EDFS Includes

  • Two beautifully machined and black anodized covers.

Diagrams and Instructions

Custom Adapters

If you need an adapter that is not listed above, we recommend that you contact PreciseParts. Refer to the link for the spacing requirements document above.