Sky coverage of our narrowband imaging survey for Lyα blobs within the NDWFS Boötes field. The shaded region represents the area covered in our Bok 2.3 m + NB403 filter survey, and the dot-dashed lines represent the subfields of the NDWFS. The gaps in the sky coverage are due to the large gaps between the 90Prime CCDs and a large trap in one of the CCDs. The total sky coverage is 4.82 deg², excluding bright stars and artifacts, making our survey one of the widest FOV, narrowband imaging surveys to date. The four circles represent the Lyα blobs that we have discovered (see Section 3.2 for details). None are radio-loud. The easternmost and westernmost blobs are detected in X-rays, while the pair of blobs in the upper middle region is not.