Space Index
Total number of pages: 65
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AAPERTIF DR1Contents APERTIF DR1 - Introduction APERTIF DR1 - Observations & Processing Released Observations Primary Beam Response Overview of primary beam shapes for Apertif Drift scan method Beam models Time variability Beam size change with frequency Gaussian pro
APERTIF DR1 - Data Products
Available data products Raw data Products Raw observational data The raw observational data is recorded in measurement-set (MS) format. A survey field observation consists of forty beams covering the field; with all dishes the size of this dataset is 4.6
APERTIF DR1 - Data Quality
Continuum image quality All released continuum multi-frequency synthesis images have passed validation, ensuring that they meet the resolution requirements, minimum sensitivity requirements, and have no significant image artifacts, as described in “ Valid
APERTIF DR1 - Introduction
Apertif is a new phased-array feed (PAF) system installed on twelve of the fourteen dishes of the Westerbork Synthesis Radio Telescope (WSRT). Each PAF consists of 121 Vivaldi elements; the signal from these elements is combined with different weights to
APERTIF DR1 - Observations & Processing
Released Observations All raw observational data from the imaging surveys through the first year of survey observations (1 July 2019 - 30 June 2020) are released. The survey medium-deep observations during this period were focused on the Perseus-Pisces re
APERTIF DR1 - Where to find the Data
User Interfaces The Apertif Data Release 1 (Apertif DR1) is hosted on the Apertif Long Term Archive and exposed to the community through the standard Virtual Observatory protocol. This section describes how the Apertif DR1 data products can be queried and
Apertif HI data products
adams orru bozkurt Kelley Hess Goal Release advanced data products from HI cubes Mosaic cube Images and advanced data producs Low and high resolution 1 Cube Stokes I of a field is about 20 GB X 4 frequency ranges 1 weight file (used to mosaic adiacent f
APERTIF Single Fields Data Products
For each field, we release a mosaic image in the FITS format and the corresponding source catalog in CSV format. The following figure shows the mosaic image and the noise map of the Boötes field The mosaic image is shown in the left panel and the noise m
APERTIF Single Fields Data Quality
The quality of the images was validated according to the procedure described by Adams et al. 2022 https://ui.adsabs.harvard.edu/abs/2022A%26A...667A..38A/abstract. The direction-dependent calibration allowed us to achieve a significant improvement of the
APERTIF Single Fields DR
Table of contents: APERTIF Single Fields Introduction https://support.astron.nl/confluence/display/ADR/APERTIF+Single+Fields+Introduction?src=sidebar APERTIF Single Fields Observations & Processing https://support.astron.nl/confluence/pages/viewpage.actio
APERTIF Single Fields Introduction
Apertif (APERture Tile In Focus) is a phased array feed (PAF) system for the Westerbork synthesis radio telescope (WSRT) designed for performing wide field surveys of the northern sky (van Cappellen et al. 2022 https://ui.adsabs.harvard.edu/abs/2022A%26A.
APERTIF Single Fields Observations & Processing
In total, Apertif observed about 2300 square degree of the sky with some pointings covered several times. We process the Apertif data obtained for the field mentioned above. To obtain a final mosaic image, the astrometric accuracy of the images was first
APERTIF Single Fields Where to find the data
The data can be found at https://vo.astron.nl https://vo.astron.nl Tables 1 and 3 are also accessible via CDS via anonymous ftp to cdsarc.u-strasbg.fr http://cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr http://cdsarc.u-strasbg.fr/
APERTIF Time-Domain DR1 (ARTS)
Table of Contents
APERTIF Time-Domain DR2 (ARTS)
ARTS Data Products Available data products Raw, downsampled pointings The time-domain data are in PSRFITS format, with 1-bit sampling. The data are total intensity (Stokes I). For each pointing, all TABs are available. Data from before 2020 May 1 supply 384 channels of 0.8M
ARTS Data Quality
For a detailed description of the Compound-beam and Tied-array-beam Sensitivity, and of the RFI, see Sect. 7 of van Leeuwen et al. (2023). The five FRBs presented in that paper were discovered in raw, high-resolution data, but are also visible in this arc
ARTS DR1 Data Products
Available data products Raw, downsampled pointings The time-domain data are in PSRFITS format, with 1-bit sampling. The data are total intensity (Stokes I). For each pointing, all TABs are available. Data from before 2020 May 1 supply 384 channels of 0.8M
ARTS DR1 Data Quality
For a detailed description of the Compound-beam and Tied-array-beam Sensitivity, and of the RFI, see Sect. 7 of van Leeuwen et al. (2023). The five FRBs presented in that paper were discovered in raw, high-resolution data, but are also visible in this arc
ARTS DR1 Introduction
We here present the 2019 data release for ARTS, the Apertif Radio Transient System, a supercomputing radio-telescope instrument that performs real-time Fast Radio Bursts detection and localisation on the Westerbork Synthesis Radio Telescope (WSRT) interfe
ARTS DR1 Observations & Processing
Released Observations All raw downsampled observational data from the time-domain survey taken up to 31 Dec 2019 are released. The data are 1-bit Stokes-I PSRFITS files, supplying 384 x 0.8MHz channels, at 2.048 ms time resolution . A full overview of the
ARTS DR1 Where to find the data
The Apertif Time-Domain Data Release 1 (ARTS DR1) is hosted on the Apertif Long Term Archive and exposed to the community through the standard Virtual Observatory protocol. This section describes how the data products can be queried and accessed by using
ARTS Introduction
We present the final and full data release for the Apertif Radio Transient System (ARTS), a supercomputing radio-telescope instrument that performed real-time Fast Radio Bursts detection and localisation on the Westerbork Synthesis Radio Telescope (WSRT)
ARTS Observations & Processing
Released Observations All raw downsampled observational data from the time-domain survey are released. The data are 1-bit Stokes-I PSRFITS files. Data from before 2020 May 1 supply 384 channels of 0.8MHz each, with a time resolution of 2.048 ms. Later dat
ARTS Where to find the data
The Apertif Time-Domain Data Release 2 (ARTS DR2) is hosted on the Apertif Long Term Archive and exposed to the community through the standard Virtual Observatory protocol. This section describes how the data products can be queried and accessed by using
ASTRON Data Releases Home
Welcome to the ASTRON Data Releases space! Here you will find the documentation for our recent data releases. The available data releases are listed in the side-panel on the left. You will also find a search bar to search through all the available DRs. Fo
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LLoTSSThe LOw Frequency ARray (LOFAR; \citealt{vanHaarlem_2013}) Two-metre Sky Survey (LoTSS; \citealt{Shimwell_2017}) is one of several ongoing very wide area deep radio wavelength sky surveys. Other similar projects with different instruments include the Evol
LOTSS DR2
LOTSS DR2 - Data Products To enable thorough scientific exploitation of the data, in LoTSS-DR2 a wide variety of different data products are being made publicly available with DOI:10.25606/SURF.LoTSS-DR2 and can be accessed via the LOFAR surveys webpage https://lofar-surveys.org/,
LOTSS DR2 - Data Quality
A thorough description of the LoTSS-DR2 data quality is presented in the data release paper, Shimwell et al. (2022) https://doi.org/10.1051/0004-6361/202142484. This explores the source extensions, astrometric precision, flux-density scale, recovery of d
LOTSS DR2 - Introduction
In Shimwell et al. (2022) we present LoTSS-DR2. In this data release from the ongoing LOw-Frequency ARray (LOFAR; van Haarlem et al. 2013 https://ui.adsabs.harvard.edu/abs/2013A%26A...556A...2V/abstract) Two-metre Sky Survey (LoTSS; Shimwell et al. 2017,
LOTSS DR2 - Observations & Processing
As shown in Fig. 1, LoTSS-DR2 consists of 841 pointings and it covers a total of 5634 square degrees which corresponds approximately to our contiguous coverage at the time of beginning the LoTSS-DR2 processing run. The data release is formed by two contig
LOTSS DR2 - Where to find the data
User Interfaces The LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) Data Release 2 (LoTSS DR2) is hosted on the SURF Data Repository, and exposed to the community through the standard Virtual Observatory protocols. This section describes how the
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WWhere to find data in VO@astron?Introduction This page describes access to the data in ASTRON's data holdings using the Virtual Observatory https://www.ivoa.net standards. Those standards support access to data like catalogs and images. We introduce the most important standards on this
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