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This system is mainly used for spectroscopy observations. It has a feed with one linear polarization.
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
2.900 | A | linear | 6.8 | 38 | 1.55 | 25 | 57 | 2.1 | 76 | 266 | Sep 2009 |
3.000 | A | linear | 6.7 | 37 | 1.55 | 24 | 56 | 2.1 | 74 | 256 | Sep 2009 |
3.100 | A | linear | 6.3 | 33 | 1.55 | 21 | 57 | 2.0 | 76 | 251 | Sep 2009 |
3.350 | A | linear | 5.7 | 34 | 1.55 | 22 | 56 | 2.1 | 74 | 227 | Sep 2009 |
3.450 | A | linear | 5.5 | 34 | 1.55 | 22 | 56 | 2.1 | 74 | 221 | Sep 2009 |
3.550 | A | linear | 5.2 | 30 | 1.55 | 19 | 57 | 2.1 | 75 | 217 | Sep 2009 |
normalized Gain curve (G = A0 + A1·Elv + A2·Elv2) | Observed in | confirmed | ||
---|---|---|---|---|
A0=1.0 | A1=0.0 | A2=0.0 | Sep 2009 |
Comments:
RX Name | Wavelength [cm] | Frequency (center) [GHz] | Nr. of Horns |
---|---|---|---|
P90mm (2,86-3,6 GHz) | 9.0 | 2.9-3.6 | 1 |
Version: | Comment | ||
1. Cont./Line(USB): 2,86-3,14 GHz (BW: 100 MHz) | Continuum and spectroscopy 1st freq. range | ||
2. Cont./Line(LSB): 3,29-3,6 GHz (BW: 100 MHz) | Continuum and spectroscopy 2nd freq. range | ||
Horn offsets [arcsec] | 0.0, 0.0 |
Note that the narrow line and VLBA IF channels are usually only available when the specific line version of the receiver was selected. In addition for most receivers with narrow line channels the cables at the patch board need to be connected by the receiver group.
To select different channel numbers in OBSINP, the online plot, or the toolbox the numbers have to be specified like c(1)+c(2) to add channel 1 and 2. E.g. channel 1 and 2 contain the LCP and RCP broadband channels, then "OnlPlot pen='c(1)+c(2)'" or "toolbox use='c(1)+c(2)'" will select these channels. In OBSINP the pen can be directly specified in the receiver selection menu.
Abbreviations:
SB: narrow band channel (Schmalband-Kanal), 100 MHz band width
BB: digital broad band channel (Breitband-Kanal), band width varies for different receivers
VLBA: VLBA IF, 500 MHz band width
BW: band width
TP: total power
9.0cm PFK | |||
---|---|---|---|
Channel | IF | Pol. | Comment |
1 | SB | linear | TP A |
BW | nchan | nu | Df | Dv | dv |
---|---|---|---|---|---|
MHz | MHz | kHz | km/s | km/s | |
100 | 32768 | 2900 | 3.1 | 0.315 | 0.366 |
100 | 32768 | 3000 | 3.1 | 0.305 | 0.354 |
100 | 32768 | 3100 | 3.1 | 0.295 | 0.342 |
100 | 32768 | 3200 | 3.1 | 0.286 | 0.332 |
100 | 32768 | 3300 | 3.1 | 0.277 | 0.322 |
100 | 32768 | 3400 | 3.1 | 0.269 | 0.312 |
100 | 32768 | 3500 | 3.1 | 0.261 | 0.303 |
100 | 32768 | 3600 | 3.1 | 0.254 | 0.295 |
BW … band width
nchan … number of spectral channels
nu … center frequency
Df … Channel separation (in frequency)
Dv … Channel separation (in velocity)
dv … Velocity resolution (dv=1.16*Dv)