7
Appendix
119
1 Attach the GPS unit to the camera and turn the 
camera on.
2 Select [ASTROTRACER] in A3 menu and press 
D.
The [ASTROTRACER] screen appears.
3 Select [ASTROTRACER] and press D.
4 Select [On] and press E.
5 Select [Precise Calibration] and press D.
The [Precise Calibration] screen appears.
6 Rotate the camera 
according to the 
instruction displayed on 
the monitor.
The result of calibration appears.
7 Press E.
The screen of Step 4 reappears.
If [The operation could not be completed correctly] appears, 
change the camera direction and perform a calibration 
again.
8 Press F twice.
The camera returns to standby mode.
u Caution
• When performing a calibration, be careful not to drop the 
camera. Wrap the strap around your wrist or take other 
preventive measures.
• If the battery is removed, perform a calibration again after the 
battery is put back in.
• As the magnetic field environment varies depending on the 
shooting location, a precise calibration must be performed at 
each location when shooting images of celestial bodies with 
ASTROTRACER.
• Changing the lens or the angle of the monitor after performing 
a calibration may have some effect on the magnetic field 
environment. In this case, perform a calibration again.
Shooting Celestial Bodies 
(ASTROTRACER)
Setting the ASTROTRACER A3
Enables ASTROTRACER functionEnables ASTROTRACER function
in Bulb mode to eliminate star in Bulb mode to eliminate star 
trails during timed exposurestrails during timed exposures
ASTROTRACERASTROTRACER
ASTROTRACERASTROTRACER
Precise CalibrationPrecise Calibration
CancelCancel
OKOK
Rotate camera in each of three
Rotate camera in each of three
directions ensuring that each
directions ensuring that each
rotation exceeds 180 degrees
rotation exceeds 180 degrees
Precise Calibration
Stop