This applet calculates the siderial time and value to select on the TAL scope RA scale. Just enter your local longitude (eastern longitudes are negative) and the RA hours and minutes of the star you want to look at. Click on the run button, or wait a few moments. The applet has a timer, which will update the calculated results - siderial time for GMT, for your local observation place, and the value to set on your TAL RA setting circle - every few seconds.
java -jar Siderial.jar
or, even more simple, just click on it (on Windows).
Otherwise, make sure the Siderial.jar file is in your classpath, either by setting an environment variable, or passing it as a command line parameter, and start it with
You can download the jar file here.
New Version 2004-1-17: Thanks to Dave for pointing out a problem with the Local Siderial Time display.