Fig. 26: Panorama of three images to get the full Sun, because the size of the camera chip and the sweet spot of the Hα filter are not big enough to cover the entire disk. Actually they're much more images: 3 x video sequences of 500 frames, taking the sharpest 20% and 1 video sequence for the flat frame to compensate the brightness changes of the Hα filter, the whole telescope and dust. ZWO ASI 290MM, Lunt LS60Ts
