Ball pythons hide a lot. However, your warm temps are too low for healthy ball python standards. The warm side should be in the low 90's and the cool side should be around 80. It is important that you measure the temperature of the substrate as balls use belly heat. It is highly reccomended that you use a UTH (under tank heater) regulated by a thermostat rather than light heat as ball pythons are not a basking animal.
Hope this helps,
Mark