Thursday 18 April 2019

Ha Full Disk 18th April

The sun was looking nice today - there was a nice flame prom on the eastern limb, but all the action was towards the western limb, with large active region AR12738 getting very close to passing over, but small possibly developing active region AR12739 despite being small was very bright.  It and a small filament mark the boundary of a coronal hole.  This image was taken with the LS50 etalon on the ED60 scope double stacked with the Daystar Quark.  It is a mosaic comprising of four panels and was taken with the FLIR GH3 ICX814 camera.