Well its very clear :). Anyway if you want to test if the image is authentic or just an illusion, you can try taking zikr from it or talking to it! I can tell you the method:
When the Moon is full and in the east, look for the image Imam Mehdi respectfully and with a clear mind. Then, close your eyes, put your hand on your heart and feel your heartbeats. Then with those heartbeats say Allah, Allah, Allah three times and you will feel the difference.
If you feel the difference it's because you mentioned Allah's name and the moon is representative of Imam Ali as it reflects the light of the sun which is representative of The Prophet Mohammed. The Sun and the Moon are Metaphors therefore of Prophet hood, Imamat, illumination, clear reality and guidance. The hotchpotch images you are talking about are a coincidental attempt to defy the reality of Allah 's (swt) 'signs' in their wholeness.
Those signs are that there are twelve full moons in each year meaning that there are twelve months accordingly, four of them being holy, one of them being the one, Sha'baan, within which the twelfth Imam was born. Once the Ummah understands why this number is so significant they will soon come to the realisation why Allah commanded all of them to ask Him to bless Mohammed and his family in each of their five daily prayers.