diff --git a/antenna.rst b/antenna.rst index 303c5b3538e9001792232ad4eefd88079ee14516..cbf262128608e57d55a7883fb76205aa9a8fcf0a 100644 --- a/antenna.rst +++ b/antenna.rst @@ -83,15 +83,13 @@ In the current call for proposals, the following (cryogenically-cooled) receiver =============== ============= =============== ================= =============== ================================================ RF band (GHz) Type Tsys@90degEL(K) Beamsize (arcmin) Max gain (K/Jy) connected backends =============== ============= =============== ================= =============== ================================================ -P 0.30-0.36 single-feed 50-80 48 0.52 DBBC,ROACH1 -L 1.3-1.8 single-feed 25-35 11.4 0.55 DFB,DBBC,ROACH1,SARDARA -C-high 5.7-7.7 single-feed 32-37 2.7 0.66 TP,DFB,DBBC,ROACH1,SARDARA,XARCOS -K 18-26.5 7-feed 90 0.8 0.66 TP (MB),DFB,DBBC,ROACH1,SARDARA (MB),XARCOS(MB) -=============== ============= =============== ================= =============== ================================================ -(MB) means that the Multi-Beam option is available for observations in K-band with the TP, XARCOS and SARDARA backends. +C-low 4.2-5.6 single-feed 25 4.2 0.75 TP, SARDARA, DFB, SKARAB,DBBC +C-high 5.7-7.7 single-feed 32-37 2.7 0.66 TP,DFB,DBBC,SARDARA,DBBC,SKARAB +K 18-26.5 7-feed 90 0.8 0.66 TP (MB),DFB,DBB,SARDARA (MB),SKARAB(MB) +=============== ============= =============== ================= =============== ================================================ -* 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. +(MB) means that the Multi-Beam option is available for observations in K-band with the TP, SARDARA, and SKARAB backends. * A single-feed C-high band receiver is installed at the Beam Wave Guide (BWG) focus of the telescope. The polarization type is circular. @@ -149,20 +147,6 @@ Additionally, a number of high-energy receivers are being planned for the SRT. T More details about current and future receivers at Italian radio telescopes (SRT, Medicina and Noto) are included in this review document: `receivers <http://rx2017.inaf.it/RX2017/Review_v8.1.pdf>`_ -LP-band Filters ----------------- - -Different RF filters are available for the LP-band receiver. Although it is a coaxial receiver package, the control system sees it as a group of three different receivers, each one with its own code: - -For the PPP receiver (P-band), there is one available filter (with code L2XX for linear or C2XX for circular): 300--360 MHz (which is needed to exclude RFI at higher frequencies). - -For the LLP (L-band) configuration, the following filters are available for linear or circular polarizations: - -* XXL1 (for linear) or XXC1 (for circular): all band, 1300--1800 MHz (no filter) (not recommended) -* XXL2 (for linear) or XXC2 (for circular): 1320--1780 MHz -* XXL3 (for linear) or XXC3 (for circular): 1350--1450 MHz (VLBI band) -* XXL4 (for linear) or XXC4 (for circular): 1300--1800 MHz (band-pass) -* XXL5 (for linear) or XXC5 (for circular): 1625--1715 MHz (VLBI band) For simultaneous LP observations, all combinations of the above configurations are allowed. @@ -182,7 +166,6 @@ Backend Bands Bandwidth (MHz) Sampling time Max freq. bins **SARDARA** C,K 420(300*),1500(1200*) down to 5ms 1024 or 16384 spectro-polarimeter(*) **SARDARA** L 420(90/100*),1500(500*) down to 5ms 1024 or 16384 spectro-polarimeter(*) **DFB3** L,C,K 256,512,1024 100 microsec 8192, pulsars: 2048 online pulsar folding + pulsar/transient search -**ROACH1** P,L,C,K 128 - (varies) baseband recorder + offline pulsar folding + pulsar/transient search **DBBC** P,L,C,K 512 - - VLBI =============== ======= ======================= =============== ===================== ======================================================================