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information_for_astronomers:rx:s60mm
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information_for_astronomers:rx:s60mm [2013/10/21 15:40] bwinkel [Spectroscopy modes and resolution] |
information_for_astronomers:rx:s60mm [2025/05/28 16:50] (current) akraus |
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| ====== 6-cm secondary focus receiver (4600-5100 MHz) ====== | ====== 6-cm secondary focus receiver (4600-5100 MHz) ====== | ||
| - | This is a 4-channel 2-horn system for sensitive continuum, polarimetry, VLBI, and pulsar observations. | + | This is a 4-channel system for sensitive continuum, polarimetry, VLBI, and pulsar observations. |
| + | |||
| + | ==== Overview ==== | ||
| + | |||
| + | ^ RX Name ^ [[information_for_astronomers:rx:bands|Band]] ^ Frequency range [GHz] ^ Polarisation^Nr. of Horns ^Horn position relativ to center of focus cabin^ | ||
| + | | **S60mm** | C | 4.6-5.1 | dual-circular| 1 | Az: 236.6, arcsec, Elv: -1336.0 arcsec| | ||
| ==== Calibration Information ==== | ==== Calibration Information ==== | ||
| ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ FWHM [arcsec] ^ Last update ^ | ^ Frequency [GHz] ^ Channel ^ Polarisation ^ Tcal [K] ^ Tsys [K] ^ Sensitivity [K/Jy] ^ SEFD [Jy] ^ Aperture Eff. [%] ^ TMB/S [K/Jy] ^ Main Beam Eff. [%] ^ FWHM [arcsec] ^ Last update ^ | ||
| - | |4.850 |A / B | LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008| | + | |4.850 |A / B |LCP / RCP |1.8 |27 |1.55 |18 |53 |2.4 |63 |146 |June 2008| |
| ^ 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 = 0.97323|A1 = 1.2702E-3|A2 = -1.5059E-5|May 2004| | | + | |A0 = 0.9870|A1 = 8.692E-4|A2 = -1.453E-5|Aug 2023|May 2025 | |
| - | |A0 = 0.995|A1 = 5.2022E-4|A2 = -1.27874e-05|Feb 2008| | | + | |
| **Comments:** | **Comments:** | ||
| * The values for LCP and RCP do not differ significantly. | * The values for LCP and RCP do not differ significantly. | ||
| - | * The new gain curve (Feb 2007) was corrected for opacity. | + | * The opacity is usually very small. Typical zenith tau values are < 0.01. |
| - | * If no other information about the opacity is available a typical zenith tau value of about 0.016 should do a good job. | + | |
| + | ==== Available receiver versions (for OBSINP) ==== | ||
| + | |||
| + | ^Version^Description^Details^ | ||
| + | |BB_continuum|standard continuum backend with internal polarimeter|bandwidth 500 MHz| | ||
| + | |EDDPOL_MULTIFIBA | spectro-polarimeter backend | | | ||
| + | |||
| + | |||
| + | **Below here: Information is currently updated.** | ||
| ==== Version description for OBSINP ==== | ==== Version description for OBSINP ==== | ||
| ^ RX Name ^ Wavelength [cm] ^ Frequency (center) [GHz] ^ Nr. of Horns ^ | ^ RX Name ^ Wavelength [cm] ^ Frequency (center) [GHz] ^ Nr. of Horns ^ | ||
| - | | **S60mm Double Beam** | 6 | 4.6-5.1 (4.85) | 2 | | + | | **S60mm Double Beam** | 6 | 4.6-5.1 (4.85) | 1 | |
| | **Version:** | **Comment** ||| | | **Version:** | **Comment** ||| | ||
| |1. Continuum (BW: 500 MHz) | Broad Band Continuum + Polarimeter ||| | |1. Continuum (BW: 500 MHz) | Broad Band Continuum + Polarimeter ||| | ||
| Line 87: | Line 101: | ||
| ==== Tcal and Tsys measurements ==== | ==== Tcal and Tsys measurements ==== | ||
| - | {{:information_for_astronomers:rx:s60mm-xffts-tcal.png?900|Tcal}} | + | {{:information_for_astronomers:rx:s60mmb_tcal_from_specpointing_using_tau_spec.png?675 |}} |
| - | + | {{:information_for_astronomers:rx:s60mmb_tsys0_from_specpointing_using_tau_spec.png?675 |}} | |
| - | {{:information_for_astronomers:rx:s60mm-xffts-tsys.png?900|Tsys}} | + | {{:information_for_astronomers:rx:s60mmb_tau_from_specpointing_using_tau_spec.png?675 |}} |
| + | {{:information_for_astronomers:rx:s60mmb_hpbw_from_specpointing.png?675 |}} | ||
| - | {{:information_for_astronomers:rx:s60mm-xffts-trms.png?900|Trms}} | ||
information_for_astronomers/rx/s60mm.1382362810.txt.gz · Last modified: 2013/10/21 15:40 by bwinkel
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