Starlight Xpress SXV USB2.0 Interface User Manual

Page 3

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the guider output and the input to the mount. Please contact your local distributor if a
relay box is required. Some mounts (Vixen, for example) use a similar guider input
socket, but have re-arranged connections. Details are given on our web pages at the end
of the ‘STAR2000’ section.

To use the autoguider, please proceed as follows:

1) Having started the USB2 interface software, open the autoguider control panel by

clicking on the autoguider menu button.

The autoguider control panel with a guide star selected

2) Press the ‘Start’ button and a series of 1 second exposure guider images will begin

to appear in the picture frame. If the images look too dim, use the ‘Stretch Image’
slider to increase its contrast and brightness until the noise begins to be visible.

3) If you haven’t focused the guider lens or ‘scope, move the mount until a bright

star is visible on the guider image and then adjust the focus until it is as sharp as
possible.

4) At this point, you may want to test the guiding control by pressing the manual

‘Move Telescope’ buttons at the bottom left corner of the control panel. You can
watch the position of any stars in the guider image and confirm that they move in
response to the buttons. The movement should be slow if the correct guiding rate
is selected on your mount (typically 2x sidereal). Adjust this, if necessary.

5) Move the mount until the required object for imaging is properly framed in the

main CCD image (leave the guider menu and use the main camera control panel,
as necessary).

6) Re-open the guider control panel, start imaging and try to locate a clearly visible

guide star. If necessary, make adjustments to the guide telescope or off-axis
guider until one is found.

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