Alternatively, you can make charts using one of several computer planetarium programs. I use Megastar and Skyglobe . A red flashlight is essential. It provides illumination but will not hamper your dark adaptation. A folding table and chair are also essential.
Comfort is one of the least talked about keys to successful deep-sky observing.
There's nothing like a sore neck or back to force an observer to abandon a beautiful dark sky. You won't be moving around very much which means you'll be susceptible to the cold. Bring layers of warm clothing such as an extra sweatshirt, insulated boots and wool hat. These will help keep you comfortable and warm throughout the night. Bring some high energy snack foods.