Now you can add a second head to your ST-7/8/9/10/2000 camera and
guide using the internal tracking CCD or the external Remote Guide
Head.  The single sensor "I" versions of these cameras can also add
the remote head for external guiding only.  Originally designed for
the large format STL cameras, the Remote Guide Head contains a cooled
TC-237 CCD with 657 x 495 pixels at 7.4u and 16-bit A/D.  This is the
same CCD that is used as the built-in tracking CCD on all of our dual
sensor, self-guiding cameras.   It is also the same sensor used in
the stand-alone STV autoguider and the former ST-237 CCD camera.  By
popular request, we have added support for the STL Remote Guide Head
to the ST-7/8/9/10/2000 series (single sensor and dual sensor models)
for those who want to put the guiding CCD in front of the filter
wheel by way of an off-axis guider, or separate guide scope.