You don’t have to carry a big SLR. Most of today’s small point-and-shoot pocket cameras do a wonderful job of capturing photos, even the ones that require certain lighting, like at dusk and dawn. Waterproof or weatherproof cameras are a plus.
The automatic settings on the point-and-shoots make taking photos on the fly pretty easy whether you’re mountain biking, hiking, snowshoeing or whatever. Most have settings for night, dawn or other special effects.
Remember the camera and catch that special photo.
Photo of the moon rising by Pete Zimowsky/Idaho Statesman