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Meade ETX 90 Manual page 6

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Another thing to note is that after mounting the telescope to the tripod as shown in the
instruction manual, it might be necessary to lift the entire telescope/tripod assembly in
order to get the telescope pointed in the direction of either "True North" or "Magnetic
North" after setting the scope to its "Home Position". The operation of leveling the
scope might have to be repeated and the adjustments should be very minor.
(There is no real Front or Back on the Telescope but on the bottom of the Telescope base
there should three small rubber pads. Assemble the scope so the two pads are in the
back with the single pad facing forward. The control panel at the base of the scope
should be on the left side. Orienting the scope in this way will provide for full range of
motion when the telescope "Slews" to a selected target in the Night Sky. This is called the
default "Alt/Az" mount)
While setting up your tripod, line up the Latitude
adjustment rod of tripod's mounting plate to the
back and the forward leg to either "True North" or
"Magnetic" North. This will come in handy when
you have to align the telescope with a couple of
"alignment stars" later. Also get the top mounting
plate as level as possible by adjusting the length of
the tripod's legs. A useful tool in performing these
operations is one's cell phone using the compass
function and a free "level app".

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