Show exposure boundaries         Clear exposure boundaries


This button toggles between two states, Show exposure boundaries and Clear exposure boundaries. It is only enabled for use if there are FITS files listed in the FITS files area.


When FITS files are dropped in the FITS files area, lines of alternating colour are drawn on the ruler indicating the start and end points of each exposure and the button is set to Clear exposure boundaries.



Press the Clear exposure boundaries button to remove the exposure boundaries:



The button changes to Show exposure boundaries, press it again to re-display the exposure boundaries.


No changes are actually made to the list of FITS files when using this button, only whether the exposure boundaries are displayed on the Screen Ruler.


The colours of selected and unselected exposure boundaries and also their line widths can be changed from the Settings window using the Exposure Markings settings.










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