A mosaic of the sun in H-alpha made from 9 separately processed videos, 2 for the prominences, 2 for the surface and 5 for flat fields in different parts of the image. The flats required defocusing the sun and each flat only covered a portion of the field. It was necessary to make a mosaic of the flats and do a careful blend to get an even result.
Details
2016-06-28 from backyard in Victoria BC
Clear sky with no wind.
ZWO ASI120S Monochrome camera and Lunt 60mm scope with 50mm double stack filter on Celestron Advanced VX mount.
Processing with Autostakkert and Photoshop