The Powerguide II DC drive/quartz-controlled drive corrector is designed to replace the standard AC-powered motor drive in older 7” fork-mounted Questar telescopes (new Questar fork mounts come with the Powerguide II already installed). It allows you to operate the Questar’s drive motor away from all AC power sources, using an ordinary 9 volt battery. It also provides drive corrector functions for astrophotography.
The Powerguide II must be installed by Questar factory technicians in place of the existing AC drive motor in the drive base of the fork mount of your older 7” Questar telescope. It cannot be installed in the field. This requires that your fork mount and drive base be shipped back to Questar for the installation. Shipping both to and from the factory is the buyer’s responsibility.
The Powerguide II powers the Questar at a sidereal tracking rate for up to 50 hours from a single 9-volt transistor radio battery, freeing you forever from the need to stay near an AC outlet to observe. Pushbuttons on the Powerguide II hand control allow single axis guiding in right ascension for astrophotography (or dual axis by adding an optional declination motor). Pressing the east and west buttons simultaneously when the scope is turned on converts the drive to a lunar tracking rate. Pressing the north and south buttons simultaneously when the scope is turned on converts it to southern hemisphere operation, allowing you to use a Questar anywhere in the world without having to worry about finding the proper power frequency or voltage. With a Powerguide II, the Questar is truly a universal telescope.
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