diff --git a/antenna.html b/antenna.html index 25a08cf2017c16ec71248d3ea09b12de7e84c620..403c00a749fe69ed3c6b5ef2bf98198e5d9e71b5 100644 --- a/antenna.html +++ b/antenna.html @@ -119,6 +119,62 @@ is designed to compensate for the gravitational deformations of the whole surfac </div> <div class="section" id="receivers"> <h1>Receivers<a class="headerlink" href="#receivers" title="Permalink to this headline">¶</a></h1> +<p>In the current call for proposals, the following receivers and configurations are available:</p> +<table border="1" class="docutils"> +<colgroup> +<col width="12%" /> +<col width="10%" /> +<col width="14%" /> +<col width="12%" /> +<col width="14%" /> +<col width="12%" /> +<col width="26%" /> +</colgroup> +<thead valign="bottom"> +<tr class="row-odd"><th class="head">RF band (GHz)</th> +<th class="head">Type</th> +<th class="head">Offered for</th> +<th class="head">Tsys@90degEL(K)</th> +<th class="head">Beamsize (arcmin)</th> +<th class="head">Max gain (K/Jy)</th> +<th class="head">connected backends</th> +</tr> +</thead> +<tbody valign="top"> +<tr class="row-even"><td>P 0.30-0.36</td> +<td>single-feed</td> +<td>VLBI, single-dish</td> +<td>50-80</td> +<td>48</td> +<td>0.52</td> +<td>DBBC,ROACH1</td> +</tr> +<tr class="row-odd"><td>L 1.3-1.8</td> +<td>single-feed</td> +<td>VLBI, single-dish</td> +<td>25-35</td> +<td>11.4</td> +<td>0.55</td> +<td>TP,DFB,DBBC,ROACH1,SARDARA</td> +</tr> +<tr class="row-even"><td>C-high 5.7-7.7</td> +<td>single-feed</td> +<td>VLBI, single-dish</td> +<td>32-37</td> +<td>2.7</td> +<td>0.60</td> +<td>TP,DFB,DBBC,ROACH1,SARDARA,XARCOS</td> +</tr> +<tr class="row-odd"><td>K 18-26.5</td> +<td>7-feed</td> +<td>VLBI, single-dish</td> +<td>90</td> +<td>0.8</td> +<td>0.45-0.65</td> +<td>TP,DFB,DBBC,ROACH1,SARDARA,XARCOS</td> +</tr> +</tbody> +</table> <ul class="simple"> <li>The single-feed, L-P band dual-frequency receiver was installed at the primary focus of the telescope, and therefore requires the parabolic configuration. It allows for simultaneous observations at L and P bands. The polarization type is linear but is also transformed to circular thanks to a hybrid converter.</li> <li>A single-feed C-high band receiver is installed at the Beam Wave Guide (BWG) focus of the telescope. The polarization type is circular.</li> @@ -260,16 +316,6 @@ is the <em>WIDE</em> filter (460 MHz of bandwidth).</p> <td>2000</td> <td>1 – 1000</td> </tr> -<tr class="row-odd"><td>P-band</td> -<td>2</td> -<td>680</td> -<td>1 – 1000</td> -</tr> -<tr class="row-even"><td>L-P dual</td> -<td>4</td> -<td>2000</td> -<td>1 – 1000</td> -</tr> </tbody> </table> </div> @@ -289,9 +335,11 @@ The observer can select the following configurations:</p> <a class="reference external" href="http://www.oa-cagliari.inaf.it/download.php?id_file=YQ9rg6JYb9mniCarnPrkZ6SZIvrwI1S%2FVGL58uBsIkX36r28s%2FDbSXyE0smKJiWa5FCsB7mRWR5SOZaxg83MVg%3D%3D">Melis et al., OAC Internal report N. 52</a>.</p> <p>It is worth noting that, given a particular configuration (e.g. XK00), the sections are obtained simultaneously. For each section, the bandwidth and starting frequency can then be set. For more information about this procedure, see <a class="reference external" href="https://discos.readthedocs.io/en/latest/user/srt/source/Backend.html#xarcos">XARCOS</a>.</p> -<p>Notes: -* XARCOS has been tested in circular polarization. Linear polarization observations are also admitted but in shared-risk mode. The full-Stokes configuration is therefore in shared-risk mode. Please contact the antenna staff. -* At C-band, standing waves have been identified that affect observations for Tcontinuum/Tsys > 0.05 (value to be confirmed).</p> +<p>Notes:</p> +<ul class="simple"> +<li>XARCOS has been tested in circular polarization. Linear polarization observations are also admitted but in shared-risk mode. The full-Stokes configuration is therefore in shared-risk mode. Please contact the antenna staff.</li> +<li>At C-band, standing waves have been identified that affect observations for Tcontinuum/Tsys > 0.05 (value to be confirmed).</li> +</ul> </div> <div class="section" id="digital-base-band-converter-dbbc"> <h2>Digital Base Band Converter (DBBC)<a class="headerlink" href="#digital-base-band-converter-dbbc" title="Permalink to this headline">¶</a></h2> diff --git a/antenna.rst b/antenna.rst index cd572344eaf066884d517d9b0020ef1576035e3d..11dbe6900a20f22eca090a7962f5de6f64aa3488 100644 --- a/antenna.rst +++ b/antenna.rst @@ -74,6 +74,17 @@ The shaped configuration is used for receivers in the Gregorian and BWG foci, wh Receivers ========= +In the current call for proposals, the following receivers and configurations are available: + +=============== ============= ================= =============== ================= =============== ================================= +RF band (GHz) Type Offered for Tsys@90degEL(K) Beamsize (arcmin) Max gain (K/Jy) connected backends +=============== ============= ================= =============== ================= =============== ================================= +P 0.30-0.36 single-feed VLBI, single-dish 50-80 48 0.52 DBBC,ROACH1 +L 1.3-1.8 single-feed VLBI, single-dish 25-35 11.4 0.55 TP,DFB,DBBC,ROACH1,SARDARA +C-high 5.7-7.7 single-feed VLBI, single-dish 32-37 2.7 0.60 TP,DFB,DBBC,ROACH1,SARDARA,XARCOS +K 18-26.5 7-feed VLBI, single-dish 90 0.8 0.45-0.65 TP,DFB,DBBC,ROACH1,SARDARA,XARCOS +=============== ============= ================= =============== ================= =============== ================================= + * The single-feed, L-P band dual-frequency receiver was installed at the primary focus of the telescope, and therefore requires the parabolic configuration. It allows for simultaneous observations at L and P bands. The polarization type is linear but is also transformed to circular thanks to a hybrid converter. * A single-feed C-high band receiver is installed at the Beam Wave Guide (BWG) focus of the telescope. The polarization type is circular. @@ -148,8 +159,6 @@ Receiver Sections Filters (MHz) Sampling time (ms) K-band 14 250,680,1200,2000 1 -- 1000 C-band 2 250,680,1200,2000 1 -- 1000 L-band 2 2000 1 -- 1000 -P-band 2 680 1 -- 1000 -L-P dual 4 2000 1 -- 1000 ======== ======== ====================== ================== XARCOS @@ -173,7 +182,9 @@ It is worth noting that, given a particular configuration (e.g. XK00), the secti starting frequency can then be set. For more information about this procedure, see `XARCOS <https://discos.readthedocs.io/en/latest/user/srt/source/Backend.html#xarcos>`_. Notes: + * XARCOS has been tested in circular polarization. Linear polarization observations are also admitted but in shared-risk mode. The full-Stokes configuration is therefore in shared-risk mode. Please contact the antenna staff. + * At C-band, standing waves have been identified that affect observations for Tcontinuum/Tsys > 0.05 (value to be confirmed).