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information_for_astronomers:rx:p200mm
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information_for_astronomers:rx:p200mm [2015/06/23 12:59] akraus |
information_for_astronomers:rx:p200mm [2024/09/09 09:12] (current) akraus |
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| - | ====== 18cm/21cm prime focus receiver (1270-1730 MHz) ====== | + | ====== P180mm/P210mm - 18cm/21cm prime focus receiver (1270-1730 MHz) ====== |
| This system is used for sensitive continuum, VLBI (especially 18cm), spectroscopy, and pulsar observations. Be aware, that this band may be influenced by RFI. It can be used in combination with a multi channel polarimeter of 8x4 MHz band width, and a total 40 MHz wide channel. | This system is used for sensitive continuum, VLBI (especially 18cm), spectroscopy, and pulsar observations. Be aware, that this band may be influenced by RFI. It can be used in combination with a multi channel polarimeter of 8x4 MHz band width, and a total 40 MHz wide channel. | ||
| + | Interferences are heavily present in these bands, unfortunately also around the 1720 MHz OH transition. | ||
| + | |||
| + | ==== Overview ==== | ||
| + | |||
| + | ^ RX Name ^ [[information_for_astronomers:rx:bands|Band]] ^ Frequency range [GHz] ^ Polarisation^Nr. of Horns ^Horn position relativ to center of focus cabin^ | ||
| + | | **P180mm/P210mm** | L | 1.27-1.73 | dual-circular (center horn)| 1 | Central horn: Az: 0 arcsec, Elv: 0 arcsec | | ||
| + | |||
| ==== Calibration Information ==== | ==== Calibration Information ==== | ||
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| ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ^ normalized Gain curve (G = A0 + A1·Elv + A2·Elv2)^^^ Observed in ^ confirmed ^ | ||
| - | |A0 = 1.0|A1 = 0.0|A2 = 0.0|Feb 2007| | | + | |A0 = 1.0|A1 = 0.0|A2 = 0.0|Feb 2024| | |
| **Comments:** | **Comments:** | ||
| * Strong interferences can occur in this frequency regime, eg. between 1.50 and 1.64 GHz! | * Strong interferences can occur in this frequency regime, eg. between 1.50 and 1.64 GHz! | ||
| * There are two values for the noise cal, different by about 6dB. See the table below to learn which receiver version uses which value. | * There are two values for the noise cal, different by about 6dB. See the table below to learn which receiver version uses which value. | ||
| + | |||
| + | ==== Available receiver versions (for OBSINP) ==== | ||
| + | |||
| + | ^Version^Description^Details^ | ||
| + | |EDDPOL_MULTIFIBA | spectro-polarimeter backend for continuum observations|with 32k channels | | ||
| + | |EDD_PULSAR_MULTIFIBA| pulsar backend | | | ||
| + | |cont_spec_100mhz| continuum and spectroscopy version with the XFFT spectrometer| | ||
| + | |vlbi| Version for VLBI observations| | ||
| + | |||
| + | **Below here: Information is currently updated.** | ||
| + | |||
| ==== Version description for OBSINP ==== | ==== Version description for OBSINP ==== | ||
information_for_astronomers/rx/p200mm.1435057156.txt.gz · Last modified: 2015/06/23 12:59 by akraus
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