* DIMM seeing data and all the weather stations on the plateau are summarised on [http://suthweather.saao.ac.za this page]
* For assessing sky conditions, SALT and LCO operate '''all-sky cameras''', also available on the website above.
* [https://fallingstar.com/weather/ ATLAS] has an excellent all-sky camera, which is much more effective than the others during twilight.(Scroll right on their page to the section labelled "STH".)
== Telescope pointing limits ==