Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System Other which determines the distance at

which determines the distance at which the converging light rays come together

Operable in ambient light or complete darkness

This ensures the eyepiece remains free from fogging

Before the advent of the Dobsonian telescope pioneered by John Dobson

4mm Field Stop Diameter  27

Explore Scientific iEXOS-100 HD PMC-Eight Equatorial Tracker System Other which determines the distance atExplore Scientific iEXOS 100 HD PMC Eight Equatorial Tracker System ES iEXOS100 ET Introducing the Explore Scientific iEXOS 100 HD PMC Eight Equatorial Tracker System, an all inclusive astronomical computerized WiFi or Wired GOTO Equatorial Tracker. This system incorporates integrated PMC Eight electronics, delivering exceptional observing and imaging capabilities without breaking the bank. You can operate it with the free ExploreStars App for