Adapters to use 2.7" or 4" Field Flatteners with CCD and DSLR Cameras or Accessories

Description Adapters to use 2.7" or 4" Field Flatteners with your FavoriteCCD and DSLR Cameras or Accessories (A1260, A1261, A1262, A1263, A1265) The most discriminating CCD imagers with large chips may wish to use our field flatteners for the best possible results at the edge of the field. These adapters will preserve the correct spacing from the field flattener to the focal plane of your CCD camera. Choose the correct length for your system. Spacing distance can be refined by adding one of our many Thread-on Extensions. For owners of the SBIG STL Series of large format CCD cameras, we suggest the special STL Series adapters (ADA671 & ADA672) below for both perfect spacing and minimal vignetting. Important: There are now a huge variety of CCD cameras, filter wheels and other accessories on the market, and all of them have different dimensions in terms of their optical backfocus or light path distance. Even different filter choices will affect the optical distance because of the in