Hi brewco,
Welcome to the Q&A Board.
Some advanced digital cameras and most digital single reflex cameras have wireless remote capability. Some remotes let you trigger the shutter at specified intervals. Those cameras tend to be expensive and you may have to purchase the remote as a separate accessory.
There are other, possible less expensive, options to consider.
A digital camera with an Intervalometer may be just what you're looking for. An intervalometer lets you shoot images at a set interval. For example, some Canon digital cameras let you set the interval time between one minute and an hour. The camera takes between two and 100 images within the time frame, depending on the settings you select.
You can also buy a digital camera that takes video, preferably one that uses high capacity secure digital memory cards.
http://www.digicamhelp.com/accessories/memory-cards/sdhc.phpTell us what you've budgeted for your purchase, we may be able to be more specific about brands and models.