The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P282+08)

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 (P282+08)

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 P282+08.

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

Go to main LoTSS-DR3 Collection

Files

Files (274.5 GB)

Name	Size	Status
images.tar	23.1 GB	Offline	Request
Checksum: md5:2110f8090bedc6508230c7a46c7d2f53 EPIC PID: 11112/a4f6ad85-9b09-4447-b36e-c3bd0c3686b6 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	353.4 MB	Offline	Request
Checksum: md5:04ff975f64d9c3e5edcf9f340ce54ce4 EPIC PID: 11112/c1b3428e-e576-4b1c-bee4-64185d841da3 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	Online	Download
Checksum: md5:20455eb0f83202e4ec83a6b8f8232644 EPIC PID: 11112/a96e635a-f3c5-42de-a205-bd31e26dbf43 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_P282+08.tar.gz	34.1 MB	Offline	Request
Checksum: md5:177a3d3c9526fd02b522100bccb2f295 EPIC PID: 11112/d15ac4d6-ee55-45fe-aedf-f024a96ec15e Description: 20′′ RM-synthesis products, including QU spectra, Faraday depth and polarization maps, noise products and catalogues.
stokes_large.tar	40.6 GB	Offline	Request
Checksum: md5:dc1b674264d8bfcc07d436fc90666307 EPIC PID: 11112/143f2654-23ec-4573-b096-969dc9b745bc Description: The low (20′′) resolution 120-168MHz Stokes Q and U image cubes for this pointing.
stokes_small.tar	57.0 GB	Online	Download
Checksum: md5:1858a68d4be4bad5b0652c9cca40b653 EPIC PID: 11112/50baafb3-0267-4126-a389-8234c8d94012 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_L2026741.tar	24.2 GB	Offline	Request
Checksum: md5:ba2f3affbe7c93a6a4fa85a8d5f79538 EPIC PID: 11112/3bb6c299-862f-4af5-adbf-33938babf4be 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_L2026747.tar	24.2 GB	Online	Download
Checksum: md5:c56c1c6f7ed20f11a9031cb363108766 EPIC PID: 11112/c9c97738-fd80-47ce-92a8-b01cac077ef0 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_L2026755.tar	24.2 GB	Offline	Request
Checksum: md5:796aff13d5f93bd1ae5577e247146dc3 EPIC PID: 11112/bf4ee3a9-ee60-4516-816d-33396e7e34b3 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_L2032215.tar	24.2 GB	Offline	Request
Checksum: md5:ee6255d1f069c9c021cf95a7aff68dc8 EPIC PID: 11112/c552e8de-16de-4633-9f5f-c9bc58bf8c5d 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_L2032229.tar	24.2 GB	Offline	Request
Checksum: md5:67a054d18874df504072a41627d5acf2 EPIC PID: 11112/37c50950-b6ea-424e-a25c-05d68d7af050 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_L2033439.tar	20.3 GB	Offline	Request
Checksum: md5:aabb07f184be09e9d4fbcb273b299627 EPIC PID: 11112/5f1dee12-bf98-4b13-9f4a-76cab366b9cc 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	10.3 GB	Offline	Request
Checksum: md5:240858e3435c853c5f6280cdca76b0d1 EPIC PID: 11112/0016db62-2b30-4068-8335-661339a12361 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/P282%2B08
bandpasshi	2.4982705
bandpassid	120-168MHz
bandpasslo	1.7844789
bandpassrefval	2.081892
bandpassunit	m
centeralpha	282.544543560375
centerdelta	7.696208333282177
coverage	278.39865335113035, 3.5385624758542784, 278.31686919586286, 11.813691072318365, 286.77179747079674, 11.813691072318365, 286.6900133155298, 3.5385624758542784
dateallobs	60206.759027777705, 60212.715277777985, 60211.759027777705, 60294.46908564819, 60295.469120370224, 60350.34361111093
datefirstobs	60206.759027777705
datelastobs	60350.34361111093
dateobs	60212.715277777985
id	P282+08
instid	LOFAR.HBA
naxes	4
pixelscale	0.00041666667675599456, 0.00041666667675599456
pixelsize	19845, 19845, 1, 1
pixflags	Z
refframe	ICRS
related_products	https://vo.astron.nl/lotss_dr3/q/dlpointing/dlmeta?ID=ivo%3A//astron.nl/%7E%3FLoTSS-DR3/P282%2B08
wcs_cdmatrix	-0.00041666667675599456, 0.0, 0.0, 0.00041666667675599456
wcs_projection	SIN
wcs_refpixel	9923.0, 9923.0
wcs_refvalues	282.54433333333, 7.6964166666667

	All versions	This version
Views	4	4
Downloads	16	16
Data volume	604.9 GB	604.9 GB

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P282+08)

Files

Files (274.5 GB)

Additional details

Related works

Dates

Collection

The LOFAR Two-metre Sky Survey (LoTSS) VII. Third data release (P282+08)

Creators

Description

Files

Files (274.5 GB)

Additional details

Related works

Dates

Collection