The Sun's chromosphere in the CaK line on April 15, 2023.

Solar chromosphere in the CaK line on April 15, 2023. SW1206-Coronado, focal reducer, equivalent focal length about 0.5 meters. ASI ZWO 178mm camera, binning 2. Image stability approximately 4 out of 5, light haze, no wind. Southeast Moscow, balcony.