3 lights on a triangular craft

we first sighted the craft at 10.30pm on the 9th of august this craft has reappeared every night since then and can still be seen right now it has shifted shape into diffrent shapes but always in a triangle when we first spotted it we were driving towards the lake on our way to our house instead of going home we went straight down to the foreshore to get a better look we stood there for around an hour in that time we noticed a light on one of the islands in the lake which looked like a strobe light in slow motion and we witnessed a blue glowing object drop from the left side of the craft we have no idea what this thing is and we dont know why it has kept coming back to the same area although it hasnt come back in the exact spot in the sky each night its in our atmoshpere but its above or in the cloud line. we have tried taking photos of it but in almost every photo we took red static appears and you cannot differentiate between the object or static however i managed to get 3 photos which have been taken over the past 2 weeks without the static in it we lose sight of it at all different times it first appears roughly betweeen 6.30pm and 7pm and we loose sight of it sometimes earlier like around 10.30pm and sometimes later at around 1.30am and this is what is behind my thoughts of it not being stars also because its in a part of the sky where stars arent seen

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