Ground-based Instruments

The only ground-based instrument currently in AuroraX are All Sky Imagers (ASIs). More will follow as we add more datasets to AuroraX.

All Sky Imagers

All Sky Imagers are cameras that collect images of auroral phenomenon using a wide-angle fisheye lens. The "all sky" aspect is what differentiates them from other types of auroral data since they capture horizon-to-horizon images.

Examples of data

Single image from the AuroraMAX ASI in Yellowknife, NWT, Canada.

Several images from the Transition Region Explorer (TREx) project.

Keograms

Keograms are images that represent a period of time of data from an ASI. The centre column of each frame is extracted and stacked left-to-right to form the keogram. North is at the top, south at the bottom, and time runs from left-to-right.

Below is one example of keograms with several stacked vertically. The top frames are all from a certain time identified by the red lines, each image is from a different ASI (left to right and top to bottom: TREx Blueline, TREx NIR, TREx RGB, REGO).