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Some of the foldable camping type panel systems include a charge controller on the back of the panel/s, many other panels come without a charge controller. You can buy solar charge controllers for around $20 on ebay. You need to consider what your overall power requirements will be for each night and work out the size of the battery required and this will give you an idea of the size of the panel. The potential load during the night informs all the other decisions. If your running a full imaging setup on an EQ mount you will need more power than a simple goto dob, and the goto dob will use more power than a pushto dob system..
So fro your signature line I will assume your looking at the G11 mount, and you have a couple of cameras there as well. Work out the current draw or wattage rated for each device, including your laptop and any inverter required to run that, and add it up. There are a number of online calculators that can help work out the battery size required to run a load for a defined period.
Personally I take alot of battery power, a couple of inverters, a 80W solar panel and a generator. The last thing you want is for your carefully setup imaging run to die in the middle of a wonderful dark site night.
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