An unobtrusive Observatory luminaire for generating diffused light or directional flood/spot lighting from a compact MR11 low voltage light source. Clear polycarbonate lamp enclosure. Provided with ceramic socket for MR11 lamps. MR11 lamp version has lockable lamp adjustment from 90° to 160° vertically and 360° horizontally. Integral 120V/11.6V electronic transformer provided. May be mounted over a standard deck or wall mounted 4 x1 ½ deep minimum octagonal wiring box set flush in finished wall or ceiling. Available without transformer for 12V supply, add suffix, LT.