1. A system for imaging a moving object within a microfluidic environment comprising: a flow cell configured to carry the moving object within a flow of carrier fluid; an illumination source configured to illuminate a first side of the flow cell through a spatial filter interposed between the illumination source and the flow cell; and an image sensor disposed on a second, opposite side of the flow cell, wherein the image sensor is angled relative to a direction of flow of the moving object within the carrier fluid.