Using The Astrotracer Function - Pentax O-GPS1 Operating Manual

Using the ASTROTRACER Function
When shooting images of astronomical objects
with long exposure by using a camera with the
Shake Reduction function , the ASTROTRACER
function enables you to track them as the Earth
rotates and make them look like stationary
points of light with no trails in the images.
1
Set the exposure mode and the focus
mode of the camera to Bulb and MF
(Manual focus), respectively.
Refer to the operating manual of the
camera.
2
Select [ASTROTRACER (Bulb)] from
[GPS] in the
[0
Rec. Mode] menu on
the camera.
16
Max. Trace Duration •
~
Timed Exposure 0
Exposure Ti me Prese t
Pres lee Calibration
3
Select [Precise Calibration].
Hold the camera firmly and rotate the
camera 180 degrees or more in each of
three directions as shown below.
4
To set the exposure time using the
timer, tick the checkbox for [Timed
Exposure] and set the time in
[Exposure Time Preset].
Set the exposure time (minute/second).
5
Select [Start Shooting].