Connectors; [A] Tracking Ccd Focus Adjustment; [B] Remote Guide Head Port; [C] Usb Port - SBIG STX Series Operating Manual

1.4. Connectors

[A] Tracking CCD Focus Adjustment

The built-in tracking CCD is set at the factory to be par focal with the imaging CCD
assuming a flat field. However, some optical designs produce enough curvature of field
to cause star images to be out of focus at the location of the tracking CCD. In this case
you may wish to adjust the focus of the tracking CCD. The available adjustment is +/-1.5
turns which corresponds to approximately +/- 1.5mm of focal plane shift for the tracking
CCD. To reset the adjustment to the nominal position, turn the adjustment screw fully
clockwise until it stops then turn it back (counterclockwise) 1.5 turns.

[B] Remote Guide Head Port

This miniature 25-pin connector is for attaching the optional remote guiding head. The
remote guiding head contains a 16-bit, cooled, low-noise, KAI-340S guiding CCD
identical to the guiding CCD built-in the camera. It draws its power from the main
camera and is controlled by the same software that controls the internal guider. This
option allows the use of either the internal or the remote guiding CCD for self-guiding
during long exposures. It has its own shutter for dark frames

[C] USB Port

Connect to your computer using a standard 14' USB cable. If your computer must be
more than 14' from the camera we recommend an active extension for short
distances
9