Tag: Crayford Focuser

Orion Telescopes and Binoculars Release New 10″ and 12” f/8 Truss Tube Ritchey-Chrétien Astrograph Telescopes
News

Orion Telescopes and Binoculars Release New 10″ and 12” f/8 Truss Tube Ritchey-Chrétien Astrograph Telescopes

Orion has introduced the new 10″ and 12” f/8 Truss Tube Ritchey-Chrétien Astrographs. Each telescope features premium quartz mirror optics in its hyperbolic primary and secondary to achieve flat images that are virtually free of chromatic aberration, for true-color performance. The primary mirror and the secondary mirror are figured from […]

iOptron 16-inch Photron Truss-Tube R-C.
News

iOptron Introduces New Truss-Tube Photron Ritchey-Crétien Astrograph Telescopes

iOptron’s Photron line of Ritchey-Crétien astrograph telescopes has been expanded with the addition of four new truss-tube models (10-,12-, 14- and 16-inch – $2995, $4295, $5795 and $6995US, respectively). Designed for today’s astro imager, Photron truss-tube R-C telescopes deliver a sharp, clear image from edge to edge. Each of the […]