The #17805 3-inch Drawtube Adapter allows many Optec 2-inch series instrument to be attached behind the larger 3-inch series. For example, with this adapter a 2-inch TCF-S series focuser can be mounted on the camera side of a Pyxis 3" rotator.
Similarly, a 2-inch IFW could be mounted directly behind a TCF-S3 series focuser.
- Outside Diameter: 3.45" (87.6mm)
- Overall Height: 1.19" (30.2mm)
- Clear Aperture: 2.05" (52mm)
- Weight: 6.08 oz (172 g)
- Back-focus Usage: 0.13" (3.3mm)
- Telescope Side Connection: OPTEC-3000 male dovetail
- Camera Side Connection:: OPTEC-2400 male dovetail
- Optec TCF-S3, TCF-S3i, TCF-Lynx3 focuser,
- Pyxis 3" #17745 or #17747 rotator,
- IFW-3 with #17367 rear-cover plate,
- Perseus 4-port selector with #19880 receiver adapter.
- TCF-S, TCF-Si, TCF-Lynx focuser,
- IFW Intelligent Filter Wheel,
- Any OPTEC-2400 dovetail receiver.