This service queries the catalog of images from the LOFAR Two-metre
Sky Survey First Data Release (LoTSS-DR1). This data release contains
images and catalogs that characterise the low-frequency radio emission
in the region of the HETDEX Spring Field (right ascension 10h45m00s
to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of
325,694 radio sources are detected in a region covering 424 square
degrees. The maps have a median sensitivity of 71 uJy/beam and a
resolution of 6 arcsec. Optical counterparts for 71% of the radio
sources have been identified and where possible photometric redshifts
for these sources have been derived.
