Hi Browni, lucky you going today

I've stopped off Istanbul many times and I would say and hour is fine to transfer. It is a very large airport and I obviously don't know what gate you'll be boarding at for
Dalaman but you will find everything clearly signed and there are plenty of airport staff around to direct you.
You're actually quite lucky that you have only got an hour as the shops are wonderful there but VERY pricey, even Burger King costs an arm and a leg

Have a safe journey and lovely holiday, 12 days, 8 hours 4 minutes for us