The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P320+13)

Shimwell, T.  W.; Hardcastle, M.  J.; Tasse, C.; Drabent, A.; Botteon, A.; Williams, W. L.; Best, P. N.; Röttgering, H. J. A.; Brüggen, M.; Brunetti, G.; Callingham, J. R.; Chyży, K.  T.; Conway, J. E.; De Gasperin, F.; Haverkorn, M.; Horellou, C.; Jackson, N.; Miley, G. K.; Morabito, L. K.; Morganti, R.; O'Sullivan, S. P.; Schwarz, D. J.; Smith, D. J. B.; van Weeren, R. J.; Vedantham, H. K.; White, G. J.; Ahmadi, A.; Alegre, L.; Arias, M.; Asabere, B.; Bahr-Kalus, B.; Barkus, B.; Bilicki, M.; Böhme, L.; Brentjens, M.; Brienza, M.; Bomans, D. J.; Bonafede, A.; Bonato, M.; Bonnassieux, E.; Boxelaar, J. M.; Camera, S.; Cassano, R.; Chilufya, J.; Cianfaglione, M.; Croston, J. H.; Cuciti, V.; Dabhade, P.; De Rubeis, E.; de Jong, J. M. G. H. J.; Dallacasa, D.; Dettmar, R. J.; Duncan, K. J.; Di Gennaro, G.; Edler, H. W.; Groeneveld, C.; Gürkan, G.; Hajduk, M.; Hale, C. L.; Heesen, V.; Hoang, D. N.; Hoeft, M.; Holties, H.; Horton, M. A.; Iacobelli, M.; Jamrozy, M.; Jarvis, M. J.; Jelic, V.; Kadler, M.; Kondapally, R.; Kunert-Bajraszewska, M.; Loose, M.; Magliocchetti, M.; Małek, K.; Manzano, C.; McKean, J. P.; Mevius, M.; Mingo, B.; Miskolczi, A.; Misra, A.; Moldón, J.; Nair, D. G.; Nakoneczny, S. J.; Orru, E.; Pashapour-Ahmadabadi, M.; Pasini, T.; Petley, J.; Pierce, J. C. S.; Prandoni, I.; Rafferty, D.; Rajpurohit, K.; Riseley, C. J.; Roberts, I. D.; Sethi, S.; Shulevski, A.; Stein, M.; Stuardi, C.; Sweijen, F.; ter Veen, S.; Timmerman, R.; Vaccari, M.; Wijnholds, S.

Published February 16, 2026 | Version v1

Dataset Open

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P320+13)

In this data release from the LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 88% of the northern sky. The individual pointing images (at 6′′ and 20′′ resolution) were derived from 12,950 hrs (18.6 PB) of LOFAR High Band Antenna data which were processed through fully automated direction-independent and direction-dependent calibration pipelines that correct for instrumental effects as well as spatially and temporally varying ionospheric distortions. The Stokes I images were then combined, accounting for the rms noise level and telescope beam, to form the final Stokes I mosaic images at 6′′ and 20′′ resolution, with a central frequency of 144MHz. From the 6′′ resolution Stokes mosaics we derived a catalogue of 13,664,379 radio sources (consisting of 16,943,656 Gaussian components), the majority of which have never been detected at radio wavelengths before. These mosaics have a median rms sensitivity of 92 μ Jy/beam; a random and systematic flux density scale accuracy of approximately 6% and 2%, respectively; an astrometric accuracy of 0.24′′; and we estimate that we detect more than 95% of sources with integrated flux densities exceeding nine times the local root mean square noise. This collection contains the individual pointing products, including calibrated uv data (measurement sets and direction-dependent calibration solutions) to allow for re-imaging or post-processing; Stokes I images at 6′′ and 20′′ resolution (with associated scaling factors required to reproduce the mosaic images); Stokes V images at 6′′ resolution for each observing epoch; and Stokes Q and U image cubes at 20′′ and 4′ resolution.

This is pointing P320+13.

Publication: Shimwell et al. 2026 (https://doi.org/10.1051/0004-6361/202557749)

Go to main LoTSS-DR3 Collection

Files

Files (284.4 GB)

Name	Size	Status
images.tar	23.2 GB	Online	Download
Checksum: md5:10473ac3778903d4db58268b6c5be8c7 EPIC PID: 11112/fed795f4-691f-470c-89d2-f33aabfe7fa5 Description: The Stokes I high (6′′) and low (20′′) 120-168MHz continuum images for this pointing (including restored, residual, model and mask images).
misc.tar	317.7 MB	Online	Download
Checksum: md5:ed96d961f67cfe531df25621f042c633 EPIC PID: 11112/64e6e461-8d4a-4ea0-8d89-e62e645c5db0 Description: Miscellaneous products (logs and diagnostics) for the direction dependent calibration and imaging processing (DDF-pipeline) of this pointing.
mosaicing_misc.tar	1.7 GB	Offline	Request
Checksum: md5:d90a99fb973c82f91e89a48f6be5eab8 EPIC PID: 11112/e1144f63-db90-4cb5-adaa-6e2b8694adf2 Description: The flux density scaling factors (NVSS scaling and planar alignment) to be applied during mosaicing as well as the facets identified as bad.
rmsynth_P320+13.tar.gz	26.0 MB	Offline	Request
Checksum: md5:bd4a8d2cb7df4441800631c034b070ae EPIC PID: 11112/c62ac9df-49de-4f05-9442-bd6066ecd8a0 Description: 20′′ RM-synthesis products, including QU spectra, Faraday depth and polarization maps, noise products and catalogues.
stokes_large.tar	40.8 GB	Online	Download
Checksum: md5:346d86f283cf8caf5596f044b5d02cc7 EPIC PID: 11112/0a67970d-099e-4b06-b65a-acc4a6f66d59 Description: The low (20′′) resolution 120-168MHz Stokes Q and U image cubes for this pointing.
stokes_small.tar	57.0 GB	Offline	Request
Checksum: md5:5194d81e4b1c15bf2108120c6a4a85aa EPIC PID: 11112/16b0e038-8892-4a27-aafe-633a73a24939 Description: The very low (4′) resolution 120-168MHz Stokes Q and U image cubes for this pointing and, where available, the low (20′′) resolution Stokes V 120-168MHz image.
uv_L2027306.tar	25.2 GB	Offline	Request
Checksum: md5:08f770ba5528d453f7fbe168551d5324 EPIC PID: 11112/ad0a5a8f-c779-4daf-b383-bd7ca0ca8095 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2027314.tar	25.2 GB	Offline	Request
Checksum: md5:67bbeb9764c108767692b380c5d99e3a EPIC PID: 11112/ad94de6d-dc1f-4b62-817f-f123cf8b5ef2 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2027649.tar	25.2 GB	Offline	Request
Checksum: md5:35514d6de80a977417bd8b4f859e2e47 EPIC PID: 11112/88a8ea84-16b9-4b66-b464-24b793096bb1 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2027657.tar	24.3 GB	Online	Download
Checksum: md5:06694ca746963f1123a0e2af84628236 EPIC PID: 11112/5999712c-b52c-440b-bce8-25921c99aaa0 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2027663.tar	25.2 GB	Offline	Request
Checksum: md5:820348052b9bd50a2dd18f15e8a05bae EPIC PID: 11112/21037ab6-a270-4aca-80c7-7dc67197d34f Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_L2027671.tar	25.2 GB	Online	Download
Checksum: md5:d795309729c5b819ca2e09c7499a0495 EPIC PID: 11112/493a71f3-d943-4447-983f-4d20c6009f89 Description: The uv-data for an individual pointing, together with the accompanying direction-dependent and refined direction-independent calibration solutions. The solutions are to be applied during imaging, along with those from uv_misc.tar, if available. Depending on how the pointing is packaged, the uv data may be provided as a single uv.tar or as multiple uv_LXXXXXX.tar files, where XXXXXX denotes the observation LOFAR LTA SASID of an observing epoch.
uv_misc.tar	10.7 GB	Offline	Request
Checksum: md5:eec18c906576a5b03e326a49c382182f EPIC PID: 11112/4f76a16f-39b1-4bb9-baa8-fa211e3aeb8c Description: Calibration facet boundaries, calibration sky model, as well as merged and smoothed direction dependent calibration solutions for use during re-imaging.

Additional details

Is described by: Publication: 10.1051/0004-6361/202557749 (DOI)

Created: 2026-02-16
Accepted: 2026-01-13

Metadata

$schema	https://repository.surf.nl/schema/lotss-dr3
accref	https://vo.astron.nl/getproduct/LoTSS-DR3/P320%2B13
centeralpha	320.8352554955812
centerdelta	13.018041666579089
instid	LOFAR.HBA
dateobs	60231.7704976853
naxes	4
pixelsize	19845, 19845, 1, 1
pixelscale	0.00041666667675599456, 0.00041666667675599456
refframe	ICRS
wcs_equinox
wcs_projection	SIN
wcs_refpixel	9923.0, 9923.0
wcs_refvalues	320.83504166667, 13.01825
wcs_cdmatrix	-0.00041666667675599456, 0.0, 0.0, 0.00041666667675599456
bandpassid	120-168MHz
bandpassunit	m
bandpassrefval	2.081892
bandpasshi	2.4982705
bandpasslo	1.7844789
pixflags	Z
coverage	316.6473767497713, 8.846350213940871, 316.5050612343193, 17.12071532364249, 325.16502209902103, 17.12071532364249, 325.0227065835685, 8.846350213940871
related_products	https://vo.astron.nl/lotss_dr3/q/dlpointing/dlmeta?ID=ivo%3A//astron.nl/%7E%3FLoTSS-DR3/P320%2B13
datefirstobs	60222.805555555504
datelastobs	60242.77296296274
dateallobs	60222.805555555504, 60226.8354166667, 60242.77296296274, 60240.778414351866, 60238.78469907399, 60231.7704976853
id	P320+13

	All versions	This version
Views	1	1
Downloads	19	19
Data volume	497.6 GB	497.6 GB

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P320+13)

Files

Files (284.4 GB)

Additional details

Related works

Dates

Collection

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P320+13)

Creators

Description

Files

Files (284.4 GB)

Additional details

Related works

Dates

Collection