Meade f/6.3 Focal Reducer & Field Flattener LX

The Meade 07049 f/6.3 Focal Reducer & Field Flattener is a 4-element multicoated 41mm lens in a metal cell which threads upon the 2"-24 rear cell thread of any 8.0-16.0" Meade Schmidt-Cassegrain or Ritchey-Chretien telescope. It also is compatible with Meade's lineup of APO refractors and 7.0" Maksutov-Cassegrains(though not ideal for either, because they don't benefit from the field-flattening influence).