Active regions (AR) are areas on the solar surface that appear dark because they are cooler than the surrounding photosphere. These regions can contain one or more sunspots. The
National Oceanic and Atmospheric Administration (NOAA) numbers active regions consecutively as they come into view. The region shown above was named AR 2497.
Camera: Point Grey Chameleon
Filters: Daystar Quark Chromosphere - hydrogen alpha
Mount: AP Mach1
Exposure: Best 10% of 1000 frames
Data obtained: February 13, 2016