Sky-Watcher Honders Advanced Catadioptric 125 astrograph, the new optical tube dedicated to the world of astrophotographers that joins the range of optical tubes currently in the catalog. HAC125 is the first Sky-Watcher telescope exclusively dedicated to astrophotography and is positioned as the ideal and definitive instrument for wide-field shots with astronomical cameras.

The innovative Honders Advanced Catadioptric optical scheme is characterized by a high-reflectivity aspherical primary mirror and a corrector with multi-treated surfaces capable of correcting the main optical aberrations to the best, thus providing bright, well-defined, wide-field point images.

The ultra-fast focal ratio of f/2 guarantees exceptional light collection in very short exposure times. With a focal length of 250mm and a diameter of 125mm, it will be possible to capture incredible details of galaxies, nebulae, star fields, etc. in just a few seconds of exposure, even without the need for autoguiding.

The exposure time required to capture the same amount of light compared to standard telescopes with focal ratios of f/6.3 is about ten times lower: with just 60 seconds of exposure using the Sky-Watcher HAC125 astrograph, it will be possible to capture the same amount of light that an f/6.3 telescope would obtain in 10 minutes of exposure. The result: bright photographs and a high signal-to-noise ratio with a very short exposure time.

The generous diameter combined with the corrected field of view of 16mm allows detailed, sharp and defined shots of large celestial, galactic and nebular fields.

Focusing is done by simply rotating the camera support located at the center of the corrector lens. The dew shield, while removable to facilitate the connection operations between the optical tube and the astronomical camera, also acts as an anti-dew band. The Sky-Watcher HAC125 optical tube has a Vixen/CG5 type dovetail bar with two rings that wrap around the tube and guarantee stability and absence of flexure. Also available on the optical tube is a Mini Vixen finder mount, useful for correctly centering the telescope's field of view.