2.7" Prime Focus Field Flattener
2.7" Prime Focus Field Flattener


2.7" Prime Focus Field Flattener

Regular price
$ 969.00
Sale price
$ 969.00
Unit price

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


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
  • 13027FF-GT - 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

Personal Upgrade Path

Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.