OFF-AXIS GUIDER (OAG) low-profile 13 mm optical length, 2 ", with T2 thread (2x) Off-Axis Guider (OAG, system for off-axis tracking) is a device that allows you to guidate (track an object) using the same optical tube through which the image is taken. A part of the light beam lying peripherally to the optical axis is directed to the guiding camera. Offered OAG is characterized by a low profile (13 mm), which is also great for short telescopes, both refractors and Newtons.
• base length: 13 mm • an input thread from the telescope: M48x0.75 mm and a 2 "nosepiece for the extractor • thread for guidera camera / tracking: T2 male • thread for main / astrophotographic camera: T2 male • optical passage / aperture: 36.8 mm • weight: 170 g (210 g with a 2 "nose) • separately available T2 / T2 ring extension 7.4 mm long (5 g), used in the case of differences in optical paths between the camera proper and guidant
(above the example configuration: QHY 6 as a shooting camera, SynGuider as a camera tracking the assembly movement, tube: SkyWatcher N-150/750)