Apertif DR2 - Continuum images

Apertif is a phased-array feed system for the Westerbork Synthesis Radio Telescope (WSRT), providing forty instantaneous beams over 300 MHz of bandwidth. A description of the second data release is to be included here. This service queries the continuum images from the second data release of Apertif. Multi-frequency synthesis (mfs) Stokes I images are produced over the full frequency range (1292.5– 1430 MHz) and saved as fits files for each beam. The size of the continuum images is 3.4 deg × 3.4 deg (3073 × 3073 pixels, with 4''/pixel). The median noise in the continuum images is 41.4 uJy/beam and the median angular resolution is 11.6''/sin(declination). A companion VO table provides a continuum source catalog based on all continuum images contained in this data release and is described in Kutkin et al. (2022) (see https://vo.astron.nl/apertif_dr2/q/apertif_dr2_catalogue/form).

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/astron.nl/apertif_dr2/q/apertif_dr2_continuum_images
Related Identifier https://vo.astron.nl/apertif_dr2/q/apertif_dr2_continuum_images/info
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://astron.nl/apertif_dr2/q/apertif_dr2_continuum_images
Provenance
Creator Apertif Team
Instrument Apertif
Publisher ASTRON
Publication Year 2026
Rights Licensed under CC-BY; http://creativecommons.org/licenses/by/3.0/
OpenAccess true
Contact Michael Sipior <vo(at)astron.nl>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics