Bugs

There are two main category of bugs. The first kind are those inadvertently created by the author. Hopefully most of these have been caught. What bugs remain should be readily fixable, and generally will be as time permits.

The second kind are those lurking in your Java environment. It is expected that this kind will be what users will typically encounter. Java has come a long way towards its "write once, run anywhere" goal, but it is not there yet. Different Java installations will exhibit different bugs, and in turn make Night Vision look buggy. If the user wishes to report a bug, it it best to first test the behavior on another machine with a different operating system and/or Java version, if possible. This should determine whether the bug is in the first category. (Some bugs might be "fixed" merely by upgrading Java.)

Some miscellaneous bugs that have been encountered:

• A bug was observed between the KDE 2.2-10 desktop that came with Red Hat Linux 7.2 and Java 1.3 where the second invocation of a secondary window (such as "Set location" window) does not show the window. The window will appear if the program is minimized and then restored. This bug went away when using the Gnome desktop or when Java was upgraded to 1.4.

• The zoom rectangle (when the mouse is pressed and dragged in the main window) was not properly rendered when tested on a Macintosh with Mac OS X. (A program change may have fixed the problem.)

• Bayer (Greek letter) star labels were not properly rendered on some computers. Usually this only affected prints, where the Greek letters were changed to "?". In one case this also affected the screen.

• The preview area in the "Set colors" window was not properly rendered on some versions of Java. A program change has hopefully cured this problem.

Wildlife imagery created by author's daughters, Heidi Suzanne and Jennifer