The ToupTek Extra Large Off-Axis Guider features a massive 14 x 10mm prism and a variety of connection methods. For telescopes with long focal lengths, a guiding camera with a large sensor is recommended such as the SC2210M. The ToupTek Extra Large OAG can be purchased with your choice of either M48, M54 or M68 connection plates on the telescope side. The overall thickness of the OAG is 17.5mm. Note: The Extra Large OAG is only compatible with Touptek G3M planetary cameras which have a backfocus of 12.5mm. The main purpose of an off-axis guider (OAG) is to use the same optical path as the main camera when guiding during astrophotography. Using an OAG avoids the problem of differential flexure that can occur when using a separate guide scope. With an OAG, part of the image is picked-off from the edge of the imaging circle which does not block the main CCD. Off-axis guiding provides more accurate guiding and sharper final images. Specifications Optical length 17.5 mm Prism size 14 x 10 mm Connection telescope side Either M48 x 0.75, M54 x 0.75 or M68 x 1 Connection camera side Direct bolted connection to filter wheel or 20mm extension Weight TBD Note: Camera not included. Items included OAG body 20mm extender Screws M48, M54 or M68 telescope-side adapter (depending on which model is ordered) Downloads User manual
