Abstract: An apparatus for observing objects, like crops in a field, to be monitored, in which a remote observer can monitor it whenever he/she wants. The apparatus includes a monitor in the field, an image server far away from the field, and a portable telephone owned by the remote observer, in which they are connected to each other through Internet by wire and wireless. The monitor includes a solar battery, a digital camera for photographing the field, a receiving and transmitting device, and a controller; the image server includes a receiving and transmitting device, and a recorder for storing image data; and the portable telephone includes a receiving and transmitting device, and an image display device. The operation to take a photograph of the field by the digital camera in the monitor is executed by the remote observer handling the portable telephone.