All the mentioned ETX series telescopes include an internal optical-flat mirror to reflect light to the telescope's 90° astronomical observing position; in this position the telescope's image is upright but reversed. For terrestrial observing, the Meade #932 prism renders images that are both upright and laterally correct. The #932 prism is included as standard equipment with the spotting scope versions of the ETX telescopes.
This prism has a built-in magnification factor of 1.08x.
- Weighs 0.20 lb (90 g)