4
2. Getting
Started
2.1. Parts List (Figure 1)
• StarShoot G4 Deep Space
Imaging Camera
• USB Cable
• DC power cable with lighter plug
• Removable 1.25" nosepiece
(threaded to camera)
• Dust cap for 1.25" nosepiece
2.2. System Requirements
Telescope
The StarShoot G4 fits any telescope equipped with 1.25" or 2" focusers, or it can
also fit to any focuser or camera adapter with male T-threads (M42 x 0.75). Refer
to
Figures 2.1 and 2.2.
Caution: Be sure to always firmly tighten the thumbscrew(s) that secure the
StarShoot G4 in the telescope focuser, or it could fall out and onto the ground!
If your telescope has T-threads for direct camera attachment, a more secure con-
nection can be made. First, unthread the nosepiece from the G4. This exposes
the camera’s T-threads. Then, simply thread the camera onto your telescope
(
Figure 2.2).
Backfocus Requirement
The G4 only requires 5mm of inward focus travel (also sometimes called
backfocus) when connecting it to a 2" focuser on your telescope. If using
the 1.25" nosepiece, the backfocus is 22mm; if connected via T-threads the
backfocus is 18mm.
Mount
Deep sky imaging with the G4 requires an equatorial mount with a right
ascension (R.A.) motor drive. The goal for your mount is to seamlessly track the
apparent movement of the sky as the Earth rotates. The tracking must be very
accurate, or the object you want to image will drift and blur across the camera’s
field of view while the exposure is taken. Even a small amount of drift will cause
Figure 3.
The USB, power, and
autoguider ports.
Cooling fan
USB port
Power
port (for
TEC
and fan
only)
Autoguider
relay port
