The first click of the [Spiral] button initializes the spiral slew
Subsequent button clicks slew the scope in a “circular” pattern of grid positions
When all grid positions have been covered the process starts again. Provided your target is roughly circular/square and doesn't span the meridian during your imaging session, this provides a simple one button approach to mosaic building.
Note: The spiral button only becomes active once a scope is connected its position read. Also the Spiral and Slew buttons are disabled until the slew is complete.
Mosaic can also be used as a spiral search where it is necessary to pause to take an exposure. This works well for finding dim targets where you need a long exposure image.
