CCDciel is free software released under the terms of the
GNU General Public License
The bad pixel map will prevent the auto-focus or slewing function locking on a hot pixel rather then on a star.
The bad pixel map will be only applied on preview images, focus or slewing images. It is not applied on captured images. Those images are not altered.
Use the menu File → Bad pixel map → Apply to current image If you want to apply the bad pixel map to an image you load in the program.
Take a preview image and check if the bright hot pixels are surpressed.
To remove/clear the bad pixel map select the menu File → Bad pixel map → Clear bad pixel map
Error: If you get an error message: “too many hot pixels”, increase the sigma threshold value in the menu Edit → Preferences → preview options. If successful the program log will report the number of hot pixels suppressed.
A typical threshold value is 5 for CCD and 8 for a modern CMOS sensors. Decrease the threshold value if you want suppress more hot pixels. Normally you should surpress maybe 5 to 30 hot pixels but you can go much higher.