update antenna.rst
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@@ -129,8 +129,6 @@ More details about current and future receivers at Italian radio telescopes (SRT
@@ -145,10 +143,6 @@ For the LLP (L-band) configuration, the following filters are available for line
Additional filters (115 MHz, 230 MHz and 460 MHz) are available at L-band for the DFB, ROACH1, DBBC and SARDARA backends. The L-band (1300 - 1800 MHz) is downconverted using a local oscillator; therefore the central frequencies of these filters can be tuned to the desired range by tuning the value for the local oscillator.
@@ -278,7 +272,7 @@ SARDARA
SARDARA is a backend composed of seven fully-reconfigurable ROACH-2 boards that allow it to perform wide-band spectro-polarimetric observations. The many observing modes covered by SARDARA include: continuum, spectroscopy and spectro-polarimetry. In the future, it will also be able to perform high-time resolution for pulsars and fast transients (not currently available). Its sampling time can be set from 5ms to 1 s. It is the backend of choice for On-The-Fly (OTF) spectro-polarimetric observations.
The SARDARA backend is composed of seven fully-reconfigurable ROACH-2 boards that allow it to perform wide-band spectro-polarimetric observations. The many observing modes covered by SARDARA include: continuum, spectroscopy and spectro-polarimetry. In the future, it will also be able to perform high-time resolution for pulsars and fast transients (not currently available). Its sampling time can be set from 5ms to 1 s. It is the backend of choice for On-The-Fly (OTF) spectro-polarimetric observations.
@@ -286,11 +280,11 @@ Available configurations consist of:
The full bandwidth for this receiver is 500 MHz (1.3-1.8 GHz). RF filters must be used (XXL4, XXL2 etc.): for 420 MHz configuration, the available filters are the XXL3, XXL5, XXC3 or XXC5 which are to be selected accordingly the needed sky frequency and polarization. Note that with these filters the effective RF bandwidth is 100 MHz or 90 MHz
The full bandwidth for this receiver is 500 MHz (1.3-1.8 GHz). RF filters must be used (choose between XXL5, XXL4, XXL3, XXL2 etc.). For the 420 MHz configuration, the available filters are: XXL3, XXL5, XXC3 or XXC5, which are to be selected according to the needed sky frequency and polarization. We note that using these filters, the effective RF bandwidth is only 100 MHz or 90 MHz.