Orion Atlas Pro AZ/EQ-G GoTo Mount Instruction Manual page 9

Short
knob
Long
knob
a.
Long knob
b.
Figure 14. a) The two knurled knobs appear as shown in EQ
mode. b) To use the mount in Alt-azimuth mode, the knob positions
should be switched.
point the jackscrew will disengage entirely. Lift the
counterweight shaft to align the alt-azimuth mode lock
hole with the upper screw hole on the left side, then
insert the longer knurled knob to connect these two holes
(Figure 14b) and tighten it with the included 5mm Allen
wrench.
Retighten the two altitude lock knobs. Figure 15
4.
shows the mount set in Alt-azimuth mode, with one
counterweight installed.
5. To restore the mount to Equatorial mode, loosen the two
altitude lock knobs first, then remove and exchange the
two knurled knobs on the left side of the mount. While
holding the counterweight shaft, slowly lower the R.A.
axis until the latitude jackscrew starts to engage. Then
turn the jackscrew counterclockwise with the handle to
lower the elevation to the desired angle.
Alt-azimuth
mode lock hole
Figure 15. Single scope mount setup in Alt-Azimuth mode, with
one counterweight added.
Note:
Short knob
• When setting the mount to Equatorial mode, the longer
knurled knob on the left side of the mount must first be
moved to the lower threaded hole on the same side,
otherwise the mount may be damaged when cranking
the R.A. axis down.
• In Alt-azimuth mode with one telescope mounted, the
telescope should be positioned such that it is on the
right-hand side of the mount when viewed from behind
the mount. The counterweight shaft should be extended
to the left.
• When switching between Alt-azimuth and Equatorial
modes, be sure to remove the telescope (first) and all
counterweights (after scope has been removed) from
the mount first to avoid damage to the mount's latitude
adjustment mechanisms.
• It may be more difficult to balance the R.A. (or Azimuth)
axis in Alt-azimuth mode. Here are the balancing steps
recommended for Alt-azimuth mode:
• Balance the payload and counterweights in equatorial
mode and mark the position of the counterweights.
• Unload the payload and counterweights to set the mount
in Alt-azimuth mode.
• Re-load the mount again by installing the counterweights
at the marked position.
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