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drao [2017/12/13 15:43] Déborah Paradis |
drao [2023/04/11 15:21] (current) Déborah Paradis |
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| ====== DRAO 22 MHz radio continuum/ 1.4 GHz polarization ====== | ====== DRAO 22 MHz radio continuum/ 1.4 GHz polarization ====== | ||
| + | |||
| + | /* AH: 25/08/18 | ||
| + | should we separate this page into two separate surveys (22MHz, 1.4GHz polar)? | ||
| + | */ | ||
| This 22 MHz radio continuum survey covers ~73% of the sky between declination -28° and +80°, derived from observations with the radiotelescope at the Dominion Radio Astrophyical Observatory (DRAO), at a resolution of 1.1°x1.7°secant(zenith angle). Units of the map are ''KTB''. | This 22 MHz radio continuum survey covers ~73% of the sky between declination -28° and +80°, derived from observations with the radiotelescope at the Dominion Radio Astrophyical Observatory (DRAO), at a resolution of 1.1°x1.7°secant(zenith angle). Units of the map are ''KTB''. | ||
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| The Q and U maps are the combination of the 26-m DRAO (Dominion Radio Astrophysical Observatory) and the 30-m Villa Elisa polarization survey, at 1.4 GHz (21 cm), with an angular resolution of 36'. Units of the maps are ''mKTB''. | The Q and U maps are the combination of the 26-m DRAO (Dominion Radio Astrophysical Observatory) and the 30-m Villa Elisa polarization survey, at 1.4 GHz (21 cm), with an angular resolution of 36'. Units of the maps are ''mKTB''. | ||
| - | The Villa Elisa 30-m telescope was used to map the southern sky simultaneously in continuum and linear polarization, yielding a fully sampled map of the 21cm linearly polarized emission for declinations between -10 and -90 degrees. Data in the overlap region between -10 and -27 degrees was used to match the Villa Elisa survey's zero-level with that of the DRAO 1.4 GHz linear polarization survey. | + | The Villa Elisa 30-m telescope was used to map the southern sky simultaneously in continuum and linear polarization, yielding a fully sampled map of the 21cm linearly polarized emission for declinations between -10 and -90 degrees. Data in the overlap region between -10 and -27 degrees was used to match the Villa Elisa survey's zero-level with that of the DRAO 1.4 GHz linear polarization survey.\\ |
| + | |||
| + | Healpix maps made by D. Paradis | ||
| === Reference for the 22 MHz survey === | === Reference for the 22 MHz survey === | ||
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| === Maps === | === Maps === | ||
| - | - 22 MHz : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_22MHz_1_256.fits| DRAO_22MHz_1_256.fits]] | + | - 22 MHz : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_22MHz_1_256.fits| DRAO_22MHz_1_256.fits]]<html> |
| + | <button class="aladin-btn" type="button" onclick="connector.runWithConnection(drao22mhz)">Aladin</button> | ||
| + | </html> | ||
| - | - 1.4 GHz POLU : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_VillaElisa_21cm_POLU_1_256.fits| DRAO_VillaElisa_21cm_POLU_1_256.fits]] | + | - 1.4 GHz POLU : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_VillaElisa_21cm_POLU_1_256.fits| DRAO_VillaElisa_21cm_POLU_1_256.fits]]<html> |
| + | <button class="aladin-btn" type="button" onclick="connector.runWithConnection(draopolu)">Aladin</button> | ||
| + | </html> | ||
| - | - 1.4 GHz POLQ : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_VillaElisa_21cm_POLQ_1_256.fits| DRAO_VillaElisa_21cm_POLQ_1_256.fits]] | + | - 1.4 GHz POLQ : [[http://cade.irap.omp.eu/documents/Ancillary/DRAO/DRAO_VillaElisa_21cm_POLQ_1_256.fits| DRAO_VillaElisa_21cm_POLQ_1_256.fits]]<html> |
| + | <button class="aladin-btn" type="button" onclick="connector.runWithConnection(draopolq)">Aladin</button> | ||
| + | </html> | ||
| <html> | <html> | ||
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| </html> | </html> | ||
| + | === HiPS=== | ||
| + | |||
| + | DRAO HiPS are available in Aladin Collections/Image | ||
| === Original WCS data === | === Original WCS data === | ||