Our 2.7" Field Flattener can be coupled to a variety of different cameras for truly superb photographs or images with your 140 f/7.5 StarFire EDF, 130 f/8.35 StarFire EDT, 155 f/7 StarFire EDFS, Star130ED, Star12ED, 5" f/8 StarFire or 5" f/8 Standard.
The backfocus spacing for these flatteners (as measured from the rear flange) is 3.4" +/- 1/10" (86.4 mm +/- 2.5 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.
Starting in August 2009, all 2.7" field flatteners are now shipped with machined aluminum covers for both sides of the unit. If you already own one of these flatteners and would like a set of covers, you may order them separately.
35 mm SLR or DSLR Camera - use 67RT-- adapters (specify the t-ring that you need) to interface with the field flattener for optimum results in 35 mm film formats. For full frame Canon DSLR's, we also offer the Large 1.875" diameter SLR Adapter with Canon EOS Bayonet (67RLEOS) and Nikon (67RLNIK) Bayonets .
Please choose the appropriate field flattener for your Astro-Physics refractor:
67PF462 - 105 Traveler
67PF562 - 130 StarFire EDFS, 130 StarFire EDF Gran Turismo (note: if you have the 130 StarFire GTX or GT with 3.5" focuser, consider the 13035FF)
67PF582 - 140 f/7.5 StarFire EDF, 130 StarFire EDT, 155 StarFire EDFS, Star130ED, Star12ED, 5" f/8 StarFire, 5" f/8 Standard