The Observation Tool (OT) is a software package that allows high-level control of the instrument PANIC based on a Java GUI. Using this tool, the observer can design and execute his observing program with the instrument PANIC of CAHA.


The OT is written in Java, due to this development, it can be used in any platform that has installed Java  Runtime Environment (JRE) Version 7.0 or higher. You can download the latest Java version from

You can determine in your computer which version of Java is the default by typing in a Terminal:

    java –version


The latest stable version of OT can be downloaded from here.

You download only one file: PANIC_OT.jar This is a crossplatform Java package that contains itself all the files that the tool needs. Ready to be run.


You can download the OT manual from here.

Running the OT

As a Java crossplatform application, you can use any operating system Java compatible.

Running from the command line

To run the OT from the command line, in a Terminal, move to the directory where the PANIC_OT.jar is, and type the following command:

   java -jar PANIC_OT.jar

Note for Mac OS X users: When launching a Java application through the command line, the system uses the default JDK (Java Development Kit). It is possible for the version of the JRE to be different than the version of the JDK.

Running OT by double click (only Windows and Mac OS X)

Another option to run the OT is double clicking in the PANIC_OT.jar file. Only available from Windows and Mac OS X operating systems.