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POWER
Figure 25. Schematic diagram of the drive panel port circuitry.
Serial cable port
(RJ-12)
Figure 26. SynScan hand controller ports.
permanent damage to the motor controller board or the
hand controller.
• Output Current: 4A for power supply with 11V output
voltage, 2.5A for power supply with 16V output voltage.
• Do not use an unregulated AC-to-DC adapter. When
choosing an AC adapter, it is recommended to use a
switching power supply with 15V output voltage and at
least 3A output current.
• If the power voltage is too low, the motor controller will
stop the motors automatically.
6. Other Atlas Pro AZ/EQ-G
Features
6.1
Auxiliary Encoder Function
The Atlas Pro mount is equipped with auxiliary encoders on
both the R.A. axis and Dec. axis. These enable the mount to
HAND CONTROL
Vpp+
8
7
RX(3.3V)
6
TX(3.3V)
5
4
3
2
GND
1
RA-
6
DEC-
5
DEC+
4
RA+
3
GND
2
+5V
1
AUTO GUIDE
Hand controller cable
port (RJ-45)
Internal Circuit
R
560
Optoisolator
TRIGGER
GND
C
DELAYED
TRIGGER
10uF/25V
SNAP
continue tracking even when a user unlocks the clutches and
manually rotates the mount in R.A. and Dec. With this feature,
you can manually operate the mount any time without worry-
ing about losing the mount's alignment status. When you want
to operate the mount with the SynScan hand controller again,
no re-alignment is required; all that is needed is to re-lock
the clutches. This feature can be enabled or disabled in the
SynScan hand controller.
6.2
Permanent Periodic Error Correction
The Atlas Pro mount is equipped with an index on its R.A. worm,
thus the motor controller can keep tracking the current position
of the worm. After a proper PEC training routine, in which the
training data is stored in the motor controller permanently, a
user can start the periodic error correction (PEC) at any time
to improve the tracking performance for astrophotography. A
training process is not required in the next observing session
(assuming that the polar alignment is always accurate), thus
this is a Permanent Period Error Correction (PPEC). A user can
train the mount by guiding either manually or electronically with
auto-guiding. For detailed instructions, please refer to the rele-
vant section in the SynScan hand controller instruction manual.
6.3
Batch Exposure Function
The Atlas Pro mount is equipped with a SNAP port that can
control the shutter of a DSLR camera (see Figure 24). Working
with the SynScan hand controller's "Camera Control" function,
you can set the number of exposures and exposure duration
for up to eight different sets of exposures. There is a 2-second
delay between exposures (or longer depending on your cam-
era's image download time). For detailed information, refer to
the SynScan hand controller instruction manual.
Control Signal
GND
15
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