This very high quality image was received Aug 11 by ZL2BX.
The battery system on ARISSat-1 has degraded rapidly and is now dropping low enough to reset the internal control system. The system is still functional but will take longer to come up to the minimum voltage for high (or full) duty cycle operations. This will reduce your chances of hearing the satellite during the day as it may only have enough power for the low duty cycle transmission mode.