El Sol
08/30/25 - Clear skies... great views of the Sun. Installed the Thousand Oaks solar film (aka Frisbee on the end of the OTA with a hole cut out for the film) and the solar film for the guide camera and captured several sets of SER video frames and FITS stills through the 0.63x Starizona flattener / reducer and the dual narrow band filter around 13:00. Left the CCD cooler off...reset gain to 50, offset 24. Tweaked polar alignment a bit adjusting azimuth to try and get the OTA pointed to the sun...then switched to mount controls for final centering using the Svbony 405cc. Worked with focus to get the sharpest views of the wide range of visible sun spots with adjustments as the OTA heated up. Tried creating a stack using Siril from the SER file (following a brier tutorial ). Did not use normalization in the stacking tab (no normalization). Set levels in the GIMP, including desaturation to remove the Thousand Oaks solar film red / orange tint from th...