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  • == Observational approaches to enable successful polarization calibration == == Instrumental polarization: technical aspects ==
    481 bytes (48 words) - 16:32, 30 July 2010
  • [[Category:ALMA]][[Category:Polarization]][[Category:Continuum]] These SV observations have been taken with the aim of testing ALMA polarization capabilities at Band 6 (233 GHz, 1 mm).
    7 KB (1,124 words) - 16:12, 5 December 2018
  • [[Category:ALMA]][[Category:Calibration]][[Category:Continuum]][[Category:Polarization]]
    513 bytes (65 words) - 11:09, 4 August 2014
  • [[Category:ALMA]][[Category:Imaging]][[Category:Continuum]][[Category:Polarization]]
    509 bytes (65 words) - 11:09, 4 August 2014
  • * Bandpass, polarization leakage and fluxscale calibration was done using an observation of 1934-638 Spectral Windows: (1 unique spectral windows and 1 unique polarization setups)
    29 KB (3,228 words) - 23:42, 28 January 2019
  • #REDIRECT [[CASA Guides:ATCA Advanced Continuum Polarization Tutorial NGC612-CASA4.7]]
    86 bytes (10 words) - 22:54, 28 July 2016
  • #REDIRECT [[ATCA Continuum Polarization Tutorial NGC612-CASA4.7]]
    65 bytes (7 words) - 18:32, 12 October 2016
  • Spectral Windows: (2 unique spectral windows and 1 unique polarization setups) ...larization leakage on 0137+331. In this step we solve for the instrumental polarization. We will assume here our calibrator has unknown polarisation (poltype='D+QU
    26 KB (3,636 words) - 13:25, 12 December 2018

Page text matches

  • FEED/ POLARIZATION/ table.dat table.f11_TSM1 table.f5 table.f8_TSM1
    15 KB (2,361 words) - 12:09, 14 December 2018
  • ...d, we see no obvious bad data. Note that the low points are actually cross-polarization data; if you want to only look at the right and left polarizations, enter ...w-amplitude points in your data are probably not junk. They are real cross-polarization data. Flagging those data will cause grief later on. Take a look at the tut
    28 KB (4,120 words) - 13:39, 17 July 2018
  • ...bserve turns a model of the sky (2 to 4 dimensions including frequency and polarization) into the visibilities that would be measured with ALMA, (E)VLA, CARMA, SMA ...upt]] - Corrupt the measurement set with thermal noise, phase noise, cross-polarization, etc.
    8 KB (1,207 words) - 13:02, 3 November 2015
  • * Visibilities are recorded every 2 seconds in full polarization (4 polarization products, (wrongly!) labelled RR,RL,LR,LL). ...than linear. This may seem mostly harmless, but does make a difference for polarization calibration (which we will do later). The following (non-standard) task wil
    46 KB (7,173 words) - 03:27, 8 June 2015
  • ** [[Jupiter: continuum polarization calibration]]
    585 bytes (71 words) - 19:16, 18 September 2018
  • ...be used to add phase delay variations, gain fluctuations and drift, cross-polarization, and (coming soon) bandpass and pointing errors to your simulated data. <t ...upt]] - Corrupt the measurement set with thermal noise, phase noise, cross-polarization, etc.
    7 KB (1,124 words) - 17:03, 16 March 2012
  • ...49 INFO listobs Spectral Windows: (1 unique spectral windows and 1 unique polarization setups) ...17 INFO listobs Spectral Windows: (1 unique spectral windows and 1 unique polarization setups)
    79 KB (9,724 words) - 20:03, 13 September 2018
  • == Leakage a.k.a. Cross-polarization == * random Gaussian (time-independent) complex cross-polarization leakage terms, with specified real and imaginary amplitudes, and an optiona
    8 KB (1,277 words) - 17:03, 16 March 2012
  • ...ystem that it needs to calculate visibilities. If your model doesn't have polarization/Stokes information, we'll add a dummy axis to the image for you. If your i
    6 KB (1,011 words) - 17:03, 16 March 2012
  • ...ystem that it needs to calculate visibilities. If your model doesn't have polarization/Stokes information, we'll add a dummy axis to the image for you. If your i
    6 KB (933 words) - 11:05, 4 November 2012
  • ...d, we see no obvious bad data. Note that the low points are actually cross-polarization data; if you want to only look at the right and left polarizations, enter ...w-amplitude points in your data are probably not junk. They are real cross-polarization data. Flagging those data will cause grief later on. Take a look at the tut
    31 KB (4,564 words) - 02:04, 2 June 2015
  • ...ed spectral windows, centered at 4.6 and 7.5 GHz, and were set up for full polarization calibration. ...med to have a precisely known flux density; the spectral bandpass; and the polarization position angle;
    163 KB (24,232 words) - 18:34, 16 July 2015
  • <tr><td>PCAL </td><td> {{polcal}} </td><td> Calibrate polarization </td></tr>
    5 KB (943 words) - 17:04, 16 March 2012
  • ...35 INFO listobs Spectral Windows: (1 unique spectral windows and 1 unique polarization setups) ...window is sampled with 256 channels each 7.8 kHz wide. There are no cross-polarization data (note that 'Corrs' is set to only 'RR LL').
    51 KB (6,414 words) - 17:21, 4 May 2010
  • ...ds, as a function of antenna index (you will get one for each sub-band and polarization): ...ize of the MS, and will speed up the imaging process. We can also drop the polarization products since they have not been calibrated and will not be used for imagi
    48 KB (7,521 words) - 11:13, 6 April 2016
  • ...3 INFO listobs Spectral Windows: (5 unique spectral windows and 1 unique polarization setups) ...presentative plots are also displayed. Each column displays an individual polarization product; since we're using all four polarizations, from left to right are R
    89 KB (12,476 words) - 10:49, 12 April 2016
  • ...nd a STOKES axis. This is true even if the data and simulation are single-polarization continuum data, in which case the FREQUENCY and STOKES axes can be "singlet # first index indexes polarization (there are two --XX, YY); second is null (probably SPW or IF, nominally)-
    12 KB (1,957 words) - 15:32, 28 December 2016
  • ...s to pre-apply before solving for a particular effect (gain or bandpass or polarization). The user (''not'' the task!) specifies a calibration table to store the s * {{polcal}}: polarization calibration;
    6 KB (862 words) - 17:03, 27 March 2013
  • ...ples for common general-use cases such as spectral line, continuum, linear polarization, and mosaicking. However, the results demonstrated here are specific to th Calibrate VLA full polarization data, image a mosaic of the region in Stokes I. Includes:
    23 KB (3,085 words) - 13:51, 2 May 2019
  • ...h as correlator setup (frequencies, bandwidths, channel number and widths, polarization products), sources, scans, scan intents, and antenna locations: Spectral Windows: (2 unique spectral windows and 1 unique polarization setups)
    84 KB (13,101 words) - 13:57, 3 November 2015

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