You can connect a camera with a 49mm threaded lens directly to a Zeiss Victory Harpia spotting scope using the Photo Lens Adapter.
The adapter attaches a mirrorless or similarly lightweight camera to the scope's eyepiece. This allows you to put the Victory Harpia's high-quality optics to work as a telephoto lens. To avoid vignetting, a focal length of 30mm for cameras with APS-C sensors and 40mm for full-frame cameras is recommended.