The photometer was used to measure rapid brightness variations in stars.

The period of the brightness variations is very regular.

They found a period of 10.283 hours with a brightness variation of 0.08 magnitude.

The light curve shows a brightness variation of 0.60 0.03 in magnitude.

But when they corrected the data for the brightness variation, the constant rose to 67, give or take 7.

The light curve shows a brightness variation of 0.33 0.06 in magnitude.

Phase shifts themselves are invisible, but become visible when shown as brightness variations.

The light curve shows a brightness variation of 0.40 0.02 in magnitude.

The light curve shows a brightness variation of 0.15 0.04 in magnitude.

The light curve shows a brightness variation of 0.37 0.05 in magnitude.