GS PAPO Guide Scope

GS Series PAPO Guide Scope GS-250AR/AC Focal length: 250mm | Aperture: 50mm | f/5 GS-350AR/AC Focal length: 350mm | Aperture: 58mm | f/6 ✓ PAPO Precision ✓ Precise Guiding ✓ Superior Image Quality The GS Series guide scopes feature a proprietary three-element PAPO (planar apochromatic with integrated field flattener) optical configuration, incorporating a single ED element to achieve effective chromatic correction. The internal barrel is precision-machined with anti-reflection threads to suppress stray light, while all lenses are coated with multi-layer broadband AR coatings. This greatly enhances image contrast and resolution, ensuring pinpoint star images for accurate, efficient guiding, thus improving the stability of primary telescope imaging. Designed around a 1-inch flat, well-corrected image circle, the GS Series supports sensors up to the IMX533 size. Versatile in function, it can be used for star-hopping, guiding, visual observing, and even DSO imaging—making it an