Create Flat Master

A “flat frame” is an exposure of a uniformly lit area (sky or screen) that is used to compensate for illumination variations such as vignette, dust on optical surfaces, and peculiarities of the sensor. Stacking individual flat frames produces a master flat that has superior signal-to-noise for improved effectiveness.

Click(New Job) to open the Select Task form:

Press the Create Calibration Master button.

If you have not yet created a profile then you will be prompted to do so (see Create Profile).

Press Create Master Flat button. Follow the instructions here (use Help “Back” button to return here) until you get to the last form:

Stacker Unlimited will suggest a file name and folder. To change either, click on the file name and specify a different mane and/or folder.

Press Run Now.

It may take a few seconds for the process to start. Note that the top toolbar has new controls and a viewer for the stack is automatically opened. Current process information and progress is reported on the bottom status-strip See Job Processor for details on the controls and information displayed. Upon completion the Reset button will become active and the status will report all of all frames processed:

The Master Flat file has been automatically saved (unless you unchecked the autosave box).