As above. That tent you pictured would look great in the back yard but not for even mildly serious camping. And it looks pretty heavy. Weight is ALWAYS an issue when flying!
You need: 1) a light-weight but adequate tent. Look at Big Agnus for an example of tents, pads and sleeping bags. Not your only choice but a good place to compare. They make great camping products. Made for backpacking in which every ounce makes a difference!
2) a good pad, either one you blow up or one that self-inflates as it unrolls.
3) a good, light sleeping bag. Even in the Summer nights can get pretty
COLD.......
Down would be the lightest for the warmth, but there are a lot of new synthetics that rival Down without the cost
4) Compact, fold-up chair that fits in a small bag. Again, look at Big Agnus or Helinox. MUCH better than sitting on the ground or asphalt. You won't regret having one!
5) You would also not regret having a JetBoil compact stove. Runs on small propane canisters and you can heat water for your morning coffee, evening dinner
6) Dehydrated meals. They come in a large variety and you put the hot water right in the bag and stir it up with your long spoon. No pots and pans needed! Town might be further away than you want to walk......or maybe there
is no town nearby. Increases the variety of places you can put up for the night.
7) A good tuque (pronounced 'tuke', eh? Canadian for warm knit beanie!) Keeps your head warm at night. May not be needed for warm-weather camping but see #3.
8) Speaking of your head: see post #3. Mickey is right: there is NO substitute for a good pillow! "Camping pillows"? Um.....probably not.......
Camping equipment is similar to tools: if you buy junk, you will likely be replacing it with quality stuff down the road as you find you really LIKE to camp with your airplane. Get quality now. Ends up being less expensive in the long run......
That's a good start! I do a lot of Airplane Camping and the above list makes me comfortable wherever I happen to end up.........