in a concentrated stream whereas the water released through the cleaning orifice 20 is in a less constricted stream and therefore more able to disperse into a water jet that is sufficiently diffuse to avoid substantial damage to the lens or light 12 that is cleaned the preferred remote sensing equipment 12 is a light source and camera however this preferred remote sensing or observation equipment is described herein by way of a preferred example and not by way of limitation the light source is preferably a halogen bulb the light and camera typically have a quartz cover plate as a protective face plate that resists the entry of moisture in addition the camera preferably has a quartz lens that is adapted to prevent the migration of moisture into the camera camera and light sources and a variety of other remote sensing and observation equipment designed for the wet operations of sewer investigations are manufactured by many specialty sewer manufacturing companies and are known in the art in a variety of configurations and with a variety of features in the preferred embodiment having a lens and light source 12 on a separate sled 16 contamination may be minimized by using a programmed cutting pattern after a lateral opening site is located in this manner observation of.