The #19647 Field Flattener Extender Tube allows insertion of AstroTech Field Flattener lenses behind Optec equipment with OPTEC-2300 receivers, such as the TCF-S and the IFW.
- Outside Diameter: 2.69" (68.3mm)
- Overall Height: 1.54" (39.1mm)
- Clear Aperture: 1.7" (43.2mm)
- Weight: 3.68 oz (104.3 g)
- Back-focus Usage: 1.29" (32.8mm)
- Telescope Side Connection: OPTEC-2300 Dovetail
- Camera Side Connection:: OPTEC-2300 Receiver