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- ID:
- ivo://astron.nl/lolss/q/cutout
- Title:
- LoLSS - Image Cutout Service
- Short Name:
- LoLSS Cutout
- Date:
- 02 Feb 2023 15:08:05
- Publisher:
- ASTRON
- Description:
- This service provides cutouts from the images of the LOFAR LBA Sky Survey (LoLSS).
- ID:
- ivo://astron.nl/lotss_dr2/q/query_mosaics
- Title:
- LoTSS-DR2 mosaics
- Short Name:
- "Mosaics"
- Date:
- 28 Sep 2023 14:12:45
- Publisher:
- ASTRON
- Description:
- In this data release from the ongoing LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44°30′ and 1h00m +28°00′ and spanning 4178 and 1457 square degrees respectively. The images were derived from 3,451 hrs (7.6 PB) of LOFAR High Band Antenna data which were corrected for the direction-independent instrumental properties as well as direction-dependent ionospheric distortions during extensive, but fully automated, data processing. A catalogue of 4,395,448 radio sources is derived from our total intensity (Stokes I) maps, where the majority of these have never been detected at radio wavelengths before. At 6′′ resolution, our full bandwidth Stokes I continuum maps with a central frequency of 144 MHz have: a median rms sensitivity of 83 μ Jy/beam; a flux density scale accuracy of approximately 10%; an astrometric accuracy of 0.2′′; and we estimate the point-source completeness to be 90% at a peak brightness of 0.8 mJy/beam. By creating three 16 MHz bandwidth images across the band we are able to measure the in-band spectral index of many sources, albeit the error on the derived spectral index is > ±0.2 which is a consequence of our flux-density scale accuracy and small fractional bandwidth. Our circular polarisation (Stokes V) 20′′ resolution 120-168 MHz continuum images have a median rms sensitivity of 95 μ Jy/beam, and we estimate a Stokes I to Stokes V leakage of 0.056%. Our linear polarisation (Stokes Q and Stokes U) image cubes consist of 480 97.6 kHz wide planes and have a median rms sensitivity per plane of 10.8mJy/beam at 4′ and 2.2mJy/beam at 20′′; we estimate the Stokes I to Stokes Q/U leakage to be approximately 0.2%. Here we characterise and publicly release our Stokes I, Q, U and V images in addition to the calibrated uv-data to facilitate the thorough scientific exploitation of this unique dataset. This service queries the Stokes I continuum mosaic images.
- ID:
- ivo://cadc.nrc.ca/sia
- Title:
- CADC Image Search (SIA)
- Short Name:
- CADC SIA
- Date:
- 19 Sep 2021 23:00:40
- Publisher:
- Canadian Astronomy Data Centre
- Description:
- Image search and retrieval for CADC imaging data.
- ID:
- ivo://CDS.VizieR/siap
- Title:
- VizieR SIA service
- Short Name:
- VizieR SIA
- Date:
- 05 May 2016 18:00:00
- Publisher:
- CDS VizieR service
- Description:
- This service provides SIA access for VizieR associated data in FITS format.
- ID:
- ivo://CEFCA/j-plus/J-PLUS-DR3
- Title:
- J-PLUS DR3 Catalogue (July, 2022)
- Short Name:
- J-PLUS-DR3
- Date:
- 20 Sep 2023 06:30:00
- Publisher:
- Centro de Estudios de Física del Cosmos de Aragón (CEFCA)
- Description:
- J-PLUS DR3 Catalogue (July, 2022) is based on scientific images in 12 filters collected from November 2015 to February 2022 covering a total area of ~3000 square degrees. The Javalambre Photometric Local Universe Survey (J-PLUS) is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern Hemisphere from the dedicated JAST80 telescope at the Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) . Please include the following in any published material that makes use of this data: "Based on observations made with the JAST80 telescope for the J-PLUS project at the Observatorio Astrofísico de Javalambre, in Teruel, owned, managed and operated by the Centro de Estudios de Física del Cosmos de Aragón."
- ID:
- ivo://CEFCA/j-plus/J-PLUS-DR2
- Title:
- J-PLUS DR2 Catalogue (July, 2020)
- Short Name:
- J-PLUS-DR2
- Date:
- 20 Sep 2023 06:30:00
- Publisher:
- Centro de Estudios de Física del Cosmos de Aragón (CEFCA)
- Description:
- J-PLUS DR2 Catalogue (July, 2020) is based on scientific images in 12 filters collected from November 2015 to February 2020 covering a total area of ~2000 square degrees. The Javalambre Photometric Local Universe Survey (J-PLUS) is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern Hemisphere from the dedicated JAST80 telescope at the Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) . Please include the following in any published material that makes use of this data: "Based on observations made with the JAST80 telescope for the J-PLUS project at the Observatorio Astrofísico de Javalambre, in Teruel, owned, managed and operated by the Centro de Estudios de Física del Cosmos de Aragón."
- ID:
- ivo://CEFCA/j-plus/J-PLUS-DR1
- Title:
- J-PLUS DR1 Catalogue (July, 2018)
- Short Name:
- J-PLUS-DR1
- Date:
- 20 Sep 2023 06:30:00
- Publisher:
- Centro de Estudios de Física del Cosmos de Aragón (CEFCA)
- Description:
- J-PLUS DR1 Catalogue (July, 2018) is based on scientific images in 12 filters collected from November 2015 to January 2018 covering a total area of ~1020 square degrees. The Javalambre Photometric Local Universe Survey (J-PLUS) is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern Hemisphere from the dedicated JAST80 telescope at the Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) . Please include the following in any published material that makes use of this data: "Based on observations made with the JAST80 telescope for the J-PLUS project at the Observatorio Astrofísico de Javalambre, in Teruel, owned, managed and operated by the Centro de Estudios de Física del Cosmos de Aragón."
- ID:
- ivo://CEFCA/minijpas/MINIJ-PAS-PDR201912
- Title:
- MINIJ-PAS PDR201912 Catalogue (December, 2019)
- Short Name:
- MINJPASPDR201912
- Date:
- 20 Sep 2023 06:30:00
- Publisher:
- Centro de Estudios de Física del Cosmos de Aragón (CEFCA)
- Description:
- MINIJ-PAS PDR201912 Catalogue (December, 2019) is based on scientific images in 60 filters covering a total area of ~1 square degree. MiniJ-PAS is a 60-band photometric optical survey based on images collected by the JST250 telescope and the Pathfinder instrument at the Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) . Please include the following in any published material that makes use of this data: "Based on observations made with the JST250 telescope and PathFinder camera for Mini J-PAS project at the Observatorio Astrofísico de Javalambre, in Teruel, owned, managed and operated by the Centro de Estudios de Física del Cosmos de Aragón."
- ID:
- ivo://cxc.harvard.edu/csc.siap
- Title:
- Chandra Source Catalog
- Short Name:
- CSC
- Date:
- 24 Oct 2019
- Publisher:
- Chandra X-ray Observatory
- Description:
- The Chandra X-ray Observatory is the U.S. follow-on to the Einstein Observatory. Chandra was formerly known as AXAF, the Advanced X-ray Astrophysics Facility, but renamed by NASA in December, 1998. Originally three instruments and a high-resolution mirror carried in one spacecraft, the project was reworked in 1992 and 1993. The Chandra spacecraft carries a high resolution mirror, two imaging detectors, and two sets of transmission gratings. Important Chandra features are: an order of magnitude improvement in spatial resolution, good sensitivity from 0.1 to 10 keV, and the capability for high spectral resolution observations over most of this range. The Chandra Source Catalog (CSC) includes information about X-ray sources detected in observations obtained using the Chandra X-ray Observatory. Release 2.0 of the catalog includes 317,167 point, compact, and extended sources detected in ACIS and HRC-I imaging observations released publicly prior to the end of 2014. Observed source positions and multi-band count rates are reported, as well as numerous derived spatial, photometric, spectral, and temporal calibrated source properties that may be compared with data obtained by other telescopes. Each record includes the best estimates of the properties of a source based on data extracted from all observations in which the source was detected. The Chandra Source Catalog is extracted from the CXC"s Chandra Data Archive (CDA). The CXC should be acknowledged as the source of Chandra data. For detailed information on the Chandra Observatory and datasets see: http://cxc.harvard.edu/ for general Chandra information; http://cxc.harvard.edu/cda/ for the Chandra Data Archive; http://cxc.harvard.edu/csc/ for Chandra Source Catalog information.