This is the larger of the 2 flip mirrors meade offers.
Specifications: Model 647 Flip-Mirror System: Includes 2" eyepiece-holder and 1.25" eyepiece adapter permitting use of either 1.25" or 2" eyepieces. Mirror clear aperture: 40mm. Recommended for full-field 35mm astrophotography or for CCD imagers of any chip dimensions, including all Meade Pictor Series through 1616XT, or ST-4 through ST-8; or for visual applications with 1.25" or 2" eyepieces.
This unit is used but in new condition. $200 shipped CONUS