Askar SQA70 Telescope 70mm Aperture F4.8 Quintuplet Air-Spaced ED Glass Petzval Astrograph Refractor for Deep Sky Astrophotography and Visual Astronomy

Askar SQA70 Telescope 70mm Aperture F4.8 Quintuplet Air-Spaced ED Glass Petzval Astrograph Refractor for Deep Sky Astrophotography and Visual Astronomy

• The central star point has an RMS radius of less than 1.84um, and the star point at the corner is less than 2.4um. lt also has excellent full-field illumination and MTF data.
• Integrated self-flattened design, supporting a 44mm full-frame image circle, no need for additional flatteners and no need for additional calculation of the back focus,Between 37mm and 68mm connection distance, users can directly use it for shooting after the OTA is in focus.
• 70mm aperture,336mm focal length, the native focal ratio is F4.8.Quintuplet air-spaced lens design, including 2pieces of ED glass. The optical system of the SQA70 has been fully optimized, utilizing a special glass combination design paired with ED glass to achieve optimal results.
• On both sides of the focuser, there are two finder bases, which not only eliminate the need for disassembling when changing the position of the finder scope but also provide additional mounting positions for other astronomical accessories.
• The rear of the focuser is equipped with a 360° high-precision rotator with a precision scale to allow the user to adjust and save the angle of rotation. lt is also equipped with an edge-shaped locking screw for easy locking