User's Guide to the Kast Double Spectrograph

Table of Contents

Quick Reference
Hardware Overview
Common Path
Blue Side
Red Side
Detector Characteristics
Kast Controller
Data Taking System
Position Angle
Arc and Flat-field Lamps
Diagonal Mirror
Kast Focus
Telescope Offset
Setup and Observing Hints
Setup Procedures
Observing Hints
Calibration Lamp Spectra
Exposure Time Calculator

Data Archive
Mt. Hamilton Homepage


Eventsounds is a program to generate sounds for exposure events, such as Exposure Begin and Readout End. This software is not required for operating Kast, but is very helpful for indicating when an exposure has begun or finished reading out.

Eventsounds may be run on gouda, karnak, or shanevnc. Local observers will find it most convenient to run it on gouda.

To start the software type
eventsounds kast &

If eventsounds is run on a computer other than gouda or by a remote Kast observer, a separate program called soundplay must also be run on the computer whose speakers you wish to use. Remote observers will have soundplay started on their local machine (if it has speakers) automatically when they start the remote observing VNC viewers.

There are four exposure events for which sounds can be generated, Erase Begin, Exposure Begin, Readout Begin, and Readout End. Separate sounds may be chosen for the blue and red side. The checkbox to the left of each exposure event determines whether the sound is played or not (a red checkbox means the sound is played). There are also sounds for critical messages, Critical-Msg, and the end of script sequences, EndSequence. You likely don't want to uncheck the Critical-Msg sounds as they happen rarely and usually signal something adversely affecting the instrument that will consequently affect your data.

A large selection of sounds are available from the pulldown menus. You may test play a sound by right clicking on the sound event name (e.g. ReadoutBegin,red).

The Volume slider at the bottom of the window adjusts the master volume of the sound played.

A particular configuration of sounds may be saved for future use by clicking on File - Save... and saving to a file of your choosing (please save the file to your subdirectory in /u/user/observers/). This file may be loaded by clicking File - Load....

Under the Edit menu are the options Show Timestamp and Show All Players. Show Timestamp will add a timestamp entry to the GUI to show when a sound was last triggered. Show All Players will bring up the display below listing which computers and channels are connected for playing sounds. These are useful for diagnosing problems.

Diagnostic window identify which computers are connected and playing sounds.

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Last modified: Fri Oct 7 12:15:15 PDT 2016