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VNC connections:
For the remote observing you have to start two VNC connections:
>vncviewer -shared mrt-remote.iram.es:30
>vncviewer -shared mrt-remote.iram.es:31
>vncviewer -shared mrt-remote.iram.es:32
(ask Dirk Muders, Lars Fuhrman or Axel Weiss for the PW)
Port 30 is used to start the observing session (PaKo,XEphem)
of the scans.
Port 31 is used to view the antannae control GUI
Port 32 is used for the online reduction using Mira |
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Communincation to the telescope operator:
Before you start the session, call the operator at Pico Veleta:
Phone: 6003 (+34 958 482002) |
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Getting Started
PaKo: (Observations, VNC Port 30)
Open a xterm on VNC Port 30 and login to your project on mrt-lx1:
>slogin 134_06@mrt-lx1 (where 134_06 is the example project number)
the start Pako by typing:
>goPako
>pakitoDisplay (alternatively pakoDisplay - gives a larger display)
>pako
In pako enter:
pako>set level 3 3
pako>set doSubmit yes
Now PaKo is ready for the observations.
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XEphem: (Planning, VNC Port 30)
Use another virutal desctop on the VNC 30 to start XEphem on mrt-lx3 to plan
your observations. XEphem needs to be started on mrt-lx3. So start another
xerm and login on mrt-lx3:
>slogin 134_06@mrt-lx3
Then start xephem:
>/vis/xephem/xephem &
Load your target source file and the IRAM pointing sources to allow for a
better planning of your observing session.
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Antenna monitoring (VNC Port 31)
./goMrtMonitor &
In case of trouble close all konqueror windows and retype the above command.
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Mira: (Reduction, VNC Port 32)
Use a third virutal desktop on the VNC 32 to start Mira
open xterm on mrt-lx1
ssh mrt-lx3
gag_aug06
mira @demo (start MIRA with default input/output)
MIRA>symbol fn "find /OBSERVED 2007-04-25"
(this defines a abbriviation to list only
the scans from the current date to
speed up the scan listing)
MIRA>fn (list scans from today)
Now MIRA is ready for the reduction. See below of details on calbration/scan reduction
using MIRA.
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Observing (PaKo)
In the following we give an example spectroscopy session which should
cover the most commonly used observing commands. Check the PaKo
documentation on the IRAM web pages for more information on indiviual
commands or observing modes not described here.
For bolometer observations check the IRAM Pool web pages.
First you need to define the receivers and observing frequencies. To save time and avoid
typing errors we recomment to prepare makros which contain the relevant informations
(see below).
pako>@setup-mysetup.pako (setup macro with rx and frequency definitions, see below)
(the macro loads the continuum backends)
pako>source Saturn (strong source of pointing and focus)
pako>cal
pako>start
... now ask operator to tune the receivers
pako>cal
pako>start
... check the RX tempertures in MIRA (see below)
pako> point
pako> start
pako> set pointing x y (enter pointing offsets from MIRA or the online display)
pako> focus
pako> start
pako> set focus z (enter focus setting from MIRA or the online display)
pako> source Jxxx (repeat pointing near target)
pako> point /notf 8 (8 subscan may be required at 2mm or on weak sources)
pako> set poiting x y
... target observations...
pako> source XXX /cat 133_06.sou
pako> @target-wsw-CD.pako (example makro of wobbler switch observations, see below
pako>loops = 5
(1 repetition is cal, wsw,
wsw; loop 5 takes ~1hour)
... repeat pointing and or focus...
pako>@contCD (change to continuum backends, for AB rx use @contAB, see below)
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Calibration/Reduction (Mira)
In principle the reduction of the scans should work automatically online. The results
are displayed on VNC Port 32 in ghostview. All spectra are written in
~/observationdata/mira/spectraOdp.30m
In case the online calibration is not working or you want to repeat the calibration
or reduction of point/focus scans use MIRA in the following way:
CHECK CALIBRATION:
MIRA>fn (abbreviation to list the scans from the current observing date, see above)
MIRA>scan xxx
... calibration result is displayed for all backends
CHECK POINTING:
MIRA>fn
MIRA>scan xxx
MIRA>solve 1 (displays and echo pointing offsets from scan xxx for rx 1)
MIRA>solve 2 (rx 2)
...
CHECK FOCUS:
MIRA>fn
MIRA>scan xxx
MIRA>solve 1 (displays and echo foucs offsets from scan xxx for rx 1)
MIRA>solve 2 (rx 2 |
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Data Reduction (CLASS)
All spectra are written to
~/observationdata/mira/spectraOdp.30m
in your project account.
For the data reduction open an xterm an login to mrt-lx3:
>slogin 134_06@mrt-lx3
then start CLASS and read and define the input file:
>class
class> file in "~/observationdata/mira/spectraOdp.30m"
Check the CLASS manual if you are not familiar with the reduction.
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Example makros (PaKo):
In order to access your makros from PaKo copy them to the
~/pako detectory in your project account. In this directory you will
also find a list of demo*.pako makros for further information.
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Setup Makro:
!DEFINE SOURCE AND LINE CATALOG
CATALOG SOURCE 134-06.sou
CATALOG LINE model-134-06.lin
!SET PROJECT ID AND PI
SET PROJECT 134-06
SET PI A. Weiss
!CLEAR THE BACKEND AND RECEIVERS IN PaKo
RECEIVER /DISC
BACKEND /DISC
RECEIVER /CLEAR
!SELECT RECEIVERS, SIDEBAND REJECTION, ETC
receiver C150 LINE1 /gain -14 db /efficiency 0.93 0.93 /scale antenna /tempLoad L 270 /dop dop /wid wide
receiver D150 LINE2 /gain -11 db /efficiency 0.93 0.93 /scale antenna /tempLoad L 270 /dop dop /wid wide
receiver C270 LINE3 /gain -10 db /efficiency 0.88 0.88 /scale antenna /tempLoad L 270 /dop dop /wid wide
receiver D270 LINE4 /gain -9 db /efficiency 0.88 0.88 /scale antenna /tempLoad L 270 /dop dop /wid wide
!LOAD CONTINUUM BACKENDS (see below)
@contCD.pako
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Line catalog: (model-134-06.lin, defined in setup makro)
LINE1 140.234 LSB
LINE2 153.123 LSB
LINE3 261.543 LSB
LINE4 274.883 LSB
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Source catalog: (134-06.sou , defined in setup makro)
SMM2217+0011 EQ 2000 22:17:33.12 00:11:20.2 LSR 0.0
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Backend makros:
continuum: (@contCD.pako)
backend /clear
swbeam !(SELECT CHOPPER WHEEL MODE FOR CONTINUUM OBS)
BACKEND CONTINUUM 1 1000.0 1000.0 0.0 /R D270
BACKEND CONTINUUM 2 1000.0 1000.0 0.0 /R C270
BACKEND CONTINUUM 3 1000.0 1000.0 0.0 /R D150
BACKEND CONTINUUM 4 1000.0 1000.0 0.0 /R C150
spectral line (backends-134-06-CD.pako)
BACKEND /CLEAR
!
BACKEND 4MHz 4 4.0 1024.0 0.0 /RECEIVER C150
BACKEND 4MHz 3 4.0 1024.0 0.0 /RECEIVER D150
BACKEND 4MHz 2 4.0 1024.0 0.0 /RECEIVER C270
BACKEND 4MHz 1 4.0 1024.0 0.0 /RECEIVER D270
BACKEND 1MHz 1 1.0 1024.0 0.0 /RECEIVER C150
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Target makro: (the example show a wobbler switch loop)
@backends-134-06-CD.pako ! set backends
!
define integer numberLoops
!
let numberLoops = &1
!
!
SET angleUnit arcsec
!
define real wobblerThrow
let wobblerThrow = 60
SWWOBBLER -wobblerThrow/2. wobblerThrow/2. /TPHASE 1.
for i 1 to numberLoops
say "starting loop number" 'i'
CALIBRATE /default
START
ONOFF /SWWOBBLER /NSUBSCANS 12 /TSUBSCAN 30.
START
START
next
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