https://www.alma.inaf.it/api.php?action=feedcontributions&feedformat=atom&user=Boissier 2026-05-07T09:22:46Z User contributions MediaWiki 1.39.1 https://www.alma.inaf.it/index.php?title=Strange_things_--_Open_questions&diff=203 2011-09-01T10:27:00Z

<p>Boissier: </p> <hr /> <div>'''NVis count in listobs'''<br /> <br /> * The number of visibilities corresponding to a given integration does not take into account neither the number of channels nor the number of polarizations. 1 spectral window and 1 baseline and 1 integration = 1 visibility<br /> * The auto-correlations are regarded as visibilities: N antennas correspond to N*(N-1)/2 baselines and {N*(N-1)/2}+N visibilities. <br /> <br /> Example [NGC3256]: 1 integration, 9 antennas (36 baselines), 4 spectral windows (of 128,128,1,1 channels and 2 polarizations) =&gt; NVis=180 <br /> <br /> * In the case of the WVR data (i.e. one of the spectral window), N antennas correspond to NVis=N (no correlation). And sometimes 2 separate integrations are put together in the listobs (NVis=2*N in that case). This is strange. [found in NGC3256 dataset from CSV]</div>

Boissier https://www.alma.inaf.it/index.php?title=CASA&diff=202 2011-09-01T10:26:40Z

<p>Boissier: Created page with &quot;&#039;&#039;&#039;Casa notes&#039;&#039;&#039; ----- Strange things -- Open questions&quot;</p> <hr /> <div>'''Casa notes'''<br /> -----<br /> [[Strange things -- Open questions]]</div>

Boissier https://www.alma.inaf.it/index.php?title=Help:Contents&diff=201 2011-09-01T10:26:18Z

<p>Boissier: Blanked the page</p> <hr /> <div></div>

Boissier https://www.alma.inaf.it/index.php?title=Strange_things_--_Open_questions&diff=200 2011-09-01T10:25:58Z

<p>Boissier: Blanked the page</p> <hr /> <div></div>

Boissier https://www.alma.inaf.it/index.php?title=Strange_things_--_Open_questions&diff=199 2011-09-01T10:22:47Z

<p>Boissier: Created page with &quot;&#039;&#039;&#039;NVis count in listobs&#039;&#039;&#039; * The number of visibilities corresponding to a given integration does not take into account neither the number of channels nor the number of polariz...&quot;</p> <hr /> <div>'''NVis count in listobs'''<br /> <br /> * The number of visibilities corresponding to a given integration does not take into account neither the number of channels nor the number of polarizations. 1 spectral window and 1 baseline and 1 integration = 1 visibility<br /> * The auto-correlations are regarded as visibilities: N antennas correspond to N*(N-1)/2 baselines and {N*(N-1)/2}+N visibilities. <br /> <br /> Example [NGC3256]: 1 integration, 9 antennas (36 baselines), 4 spectral windows (of 128,128,1,1 channels and 2 polarizations) =&gt; NVis=180 <br /> <br /> * In the case of the WVR data (i.e. one of the spectral window), N antennas correspond to NVis=N (no correlation). And sometimes 2 separate integrations are put together in the listobs (NVis=2*N in that case). This is strange. [found in NGC3256 dataset from CSV]</div>

Boissier https://www.alma.inaf.it/index.php?title=Help:Contents&diff=198 2011-09-01T10:06:36Z

<p>Boissier: Created page with &quot;&#039;&#039;&#039;Casa notes&#039;&#039;&#039; ----- Strange things -- Open questions&quot;</p> <hr /> <div>'''Casa notes'''<br /> -----<br /> [[Strange things -- Open questions]]</div>

Boissier