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AutoGuider Focusers

Reduce autoguider focusing time to seconds!

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STI SBIG Autoguider Focuser
Weight: lbs
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STI Autoguider Focusers are available for the SBIG ST-4 dedicated autoguider and for the STV model. These autoguider focusers effectively use a 180 line/inch ronchi grating for focusing.  Please choose your model on the pulldown menu.  If you already own a Series IV focuser, you may easily convert any of our autoguider focusers into a regular modular mount with the addition of a converter ring listed below.

STI Meade AutoGuider Focuser
Weight: lbs
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STI Autoguider Focusers are available for the Meade 201XT dedicated focuser, and for the Meade 208.  Please select which model from the pulldown menu.   If you already own a Series IV focuser, you may easily convert any of our autoguider focusers into regular modular mounts with the addition of an adapter ring listed below. Autoguider focusers come with a 180 lpi ronchi screen installed.

AutoGuider Adapter Ring
Weight: lbs
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This adapter ring allows you to convert the STI Autoguider Focuser into a modular mount which will screw directly in to the Series IV body.