Abstract: An apparatus that includes a surgical telescopic device having a distal end and a proximal end; a camera coupled to the proximal end of the surgical telescopic device; and a holographic notch filter interposed between the camera and the proximal end of the surgical telescopic device. The camera preferably is a charge-coupled-device camera (“CCD camera”). The apparatus may also include a focusing lens or an alternative type of filter such as a long-pass filter or an infrared filter. The surgical telescopic device may be used by illuminating the material with non-white light and detecting the emitted fluorescence, phosphorescence or luminescence.