About

Thank you for installing the TCF-S Control program. TCF-S Control is a stand-alone Windows program designed for testing, setting parameters, and operating the Optec TCF-S line of Temperature Compensating Focusers. The latest version of this program will communicate with and control the following focuser models:

TCF-S
TCF-Si

TCF-S3

TCF-S3i

You can learn more about the TCF-S focusers by visiting the Optec web page located at: http://www.optecinc.com/astronomy/tcf-s.htm

Check the Optec, Inc. web site often to download the most current version of TCF-S Control or to download the ASCOM standard driver or Linux drivers (soon to be released).

The TCF-S Control program is written in Liberty Basic version 4.03. For more information about this basic compiler visit the Liberty Basic Home Page located at www.libertybasic.com. We have included the source code for any focuser users interested in programming in this easy-to-learn language. The source code is titled TCF-S.BAS and can be compiled with Liberty Basic version 4.03 or higher.

This help file was written for TCF-S Control version 1.30. This version will operate with full functionality using the TCF-S and TCF-S3 having firmware version 2.40 or higher or TCF-Si and TCF-S3i firmware version 3.00 or higher. will work with focusers having earlier firmware versions but with some loss of function.