Differences between revisions 1 and 31 (spanning 30 versions)

Observing session

Observations are carried from a dedicated pool account (ask the AoD for the login information). Each project has a folder within the home directory of the pool account with instructions on how to proceed. Read carefully the README file before to start. For example, the file ~/193-13/README_193-13.txt shows you how to observe the project 193-13.

Contents

Observing session

Go to the Front Page

Choose a project

First log into the Pool data base (ask the AoD for the login information) and click on the GISMO/NIKA tab.

Projects have different priorities from 6 (highest priority) to 1 (lowest priority). Green color indicates that the project is scheduled, orange that the project is on hold, and red that the project is finished. Only green projects should be observed. To check the visibility of these projects go to the visibility tab:

The red vertical line corresponds to the current time (UT). In this example there are four priority 5 projects. Project 077-13 is not visible at the current time. Project 079-13 is close to the low elevation limit so it is a bad option. Since project 103-13 sets first, you should first observe this project. After 2-3 hours change to project 100-13. In case that none of the priority 5 projects have weather requirements (see the README files) compatible with the current conditions, go for priority 4 projects and so on.

Starting PaKo

To run the observations at 30m telescope it is necessary to start a PaKo session. First log into the mrt-lx1 machine:

   ssh -X pool_account@mrt-lx1.iram.es    (ask the AoD for the name of the pool account and the password)

Then start PaKo:

   gopako
   pakodisplay                   
   pakoGISMO | pakoNIKA

With these commands, PaKo will be running in the '~/PaKo/' folder.

Starting XEphem

Log into the mrt-lx3 machine:

   ssh -X pool_account@mrt-lx3.iram.es

Type:

   useNCS
   azElToXephem.py &                   
  .xephem/xephem.exe &

Project setup

The standard method to set the project is:

   PAKO> set project XXX-YY

However, for pooled observations this is often done using a setup script (see for example setup_193-13.pako). For example, before to start to observe the project 193-13 you should type:

   PAKO> @ ~/193-13/setup_193-13.pako

It is IMPORTANT to set the project accordingly before each observation in order to identify the scans observed for each project, keep control on the time used to observe each project, and write the data files in the right directory. When you will be doing tests, or if you have to stop by wind, or whatever, just type "set project test". That way, no project will loose time due to technical problems, or bad weather.

Catalog of sources

Before to start to observe a certain project it is necessary to load its catalog of sources. Usually, this is automatically done within the setup script. If for some reason you need to load the catalog manually, type:

   PAKO> SOURCE CATALOG  193-13.sou

This command will load the following list of sources:

   NGC1569   EQ   2000   04:30:50.5   +64:50:55   LSR   0.0
   NGC4449   EQ   2000   12:28:09.4   +44:05:32   LSR   0.0

To select any of these sources just type:

   PAKO> source NGC4449

Pointing and Focussing

Check in the PaKo display for the current pointing values (AZcurrent and and ELcurrent) and write them down. Choose a nearby quasar as pointing and focus source (using e.g. XEphem):

   PAKO> source 0133+476 /cat *

Launch the cont_pointing_liss script:

   PAKO> @ cont_pointing_liss

NIKA

For NIKA, check with the AoD the pointing corrections. See here

GISMO

For GISMO, check in the Nexus logsheet for the corrections in azimuth and elevation (columns pnt.dAZ and pnt.dEL), and calculate the new pointing values as:

   AZnew = AZcurrent + pnt.dAZ
   ELnew = ELcurrent + pnt.dEL

If the new pointing corrections are within 10" of the previous values, the array with its large field-of-view will still be well centered. To update the pointing constants used by PaKo, type:

   PAKO> set pointing AZnew ELnew

Check the focus using the cont_focus script:

   PAKO> @ cont_focus Fcurrent

where Fcurrent is the current value of the focus.

For NIKA, check with the AoD the focus correction. For GISMO, to calculate the new value of the focus, open another terminal and use the python script ~/Focus/Focus.py :

   cd Focus/
   python Focus.py

The python script will ask for the 1st scan of the focus sequence and the total number of scans (i.e., 5). Check if the two estimations shown (see image below) in the plot are consistent and set the new focus value:

   PAKO> set focus Fnew

IMPORTANT: The focus needs to be monitored every two hours or so, and it needs to be corrected online!

Now the telescope is pointed and focussed, and ready to start to observe.

Science targets

Observations of science targets are performed via on-the-fly and/or Lissajous maps. For example, for a 6'x12' on-the-fly map rotated 25 degrees (measured North through West) type:

   PAKO> @ cont_onthefly  16  12  25

For a 3'x3' Lissajous type:

   PAKO> @ cont_lissajous 3

A sequence of several scans can be commanded using scripts. For example, the script observe_NGC4449.pako combines several 10'x10' on-the-fly maps covering the whole galaxy environment and 4'x4' Lissajous maps to optimize the signal of the central regions. To launch this script just type:

   PAKO> @~/193-13/observe_NGC4449

Beam map

The beam map consists in a 5'x5' map with ~3" steps between rows and a duration ~18 min for GISMO, and 6.7'x3.7' map with 4" steps between rows and a duration ~12 min for NIKA. Beam maps are designed to ensure the source is moved over all the detectors of the array, in order to characterize and calibrate them (field of view geometry, flat field, stability...). The aim is to calculate the actual pixel offsets in the focal plane (see figure below). To obtain a beam map go to a primary calibrator and launch the cont_beammap.pako script:

  PAKO> @ cont_beammap

Skydips

To run a skydip with the IRAM continuum cameras, launch the cont_skydip script: ):

  PAKO> @ cont_skydip

Please note that when using GISMO, before running a skydip, the observer has to de-activate the automatic relocking of the detectors:

  NEXUS -> Configuration -> Advanced -> De-activate automatic relock of detectors

And once the skydip is finished, the observer needs to switch-on by-hand the automatic relocking of the detectors:

  NEXUS -> Configuration -> Advanced -> Activate automatic relock of detectors

Obsolete scripts

A set of fully tested scripts from previous runs are available within the ~/PaKo/obs/ folder. The following list shows how to launch some of the most popular obsolete scripts:

GISMO

    PAKO> @ obs/gismo_pointing.pako
    PAKO> @ obs/gismo_lissajous_2mx2m.pako
    PAKO> @ obs/gismo_lissajous_3mx3m.pako
    PAKO> @ obs/gismo_lissajous_4mx4m_2min.pako
    PAKO> @ obs/gismo_lissajous_4mx4m.pako
    PAKO> @ obs/gismo_lissajous_5mx5mfast.pako
    PAKO> @ obs/gismo_lissajous_5mx5m.pako
    PAKO> @ obs/gismo_lissajous_GDF.pako
    PAKO> @ obs/gismo_lissajous_tiny1min.pako
    PAKO> @ obs/gismo_lissajous_tiny2min.pako
    PAKO> @ obs/gismo_lissajous_tiny4min.pako
    PAKO> @ obs/gismo_lissajous_tiny5min.pako
    PAKO> @ obs/gismo_lissajous_tiny10min.pako
    PAKO> @ obs/gismo_otf_6mx6m.pako
    PAKO> @ obs/gismo_otf_8mx8m.pako
    PAKO> @ obs/gismo_otf_10mx10m.pako
    PAKO> @ obs/gismo_otf_30mx30m.pako
    PAKO> @ obs/gismo_otf_beammap.pako


NIKA

    PAKO> @ obs/cross.pako
    PAKO> @ obs/diydown.pako
    PAKO> @ obs/diyup.pako
    PAKO> @ obs/faintliss1.pako
    PAKO> @ obs/faintliss1t.pako
    PAKO> @ obs/faintliss2.pako
    PAKO> @ obs/faintlissfast.pako
    PAKO> @ obs/faintliss.pako
    PAKO> @ obs/faintlisst.pako
    PAKO> @ obs/focusliss.pako
    PAKO> @ obs/focusp2.pako
    PAKO> @ obs/focusp.pako
    PAKO> @ obs/ngc891liss.pako
    PAKO> @ obs/otf10x10.pako
    PAKO> @ obs/otf10x2.pako
    PAKO> @ obs/otf15x10.pako
    PAKO> @ obs/otf3x3_el.pako
    PAKO> @ obs/otf3x3.pako
    PAKO> @ obs/otf4x2.pako
    PAKO> @ obs/otf4x4.pako
    PAKO> @ obs/otf5x5_half.pako
    PAKO> @ obs/otf5x5.pako
    PAKO> @ obs/otf5x5_pol.pako
    PAKO> @ obs/otf5x5slow.pako
    PAKO> @ obs/otfgeom.pako
    PAKO> @ obs/otfgeom_pol.pako
    PAKO> @ obs/otf.pako
    PAKO> @ obs/otfsz.pako
    PAKO> @ obs/pointliss.pako
    PAKO> @ obs/pointliss_pol.pako
    PAKO> @ obs/skydip.pako
    PAKO> @ obs/skydip_test.pako
    PAKO> @ obs/skydip_updown.pako
    PAKO> @ obs/skydip_up.pako

Author: Israel Hermelo (IRAM 30m continuum pool manager)

email: hermelo@iram.es

Created: 2013.10.25

Last update: 2014.02.04

-  ⇤ ← Revision 1 as of 2014-01-14 10:36:33 → 
  Size: 7438
  Editor: gra-lx17
  Comment:
+   ← Revision 31 as of 2014-02-17 13:40:07 → ⇥
  Size: 9958
  Editor: dhcp-75
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-##acl NicolasBillot,hermelo,CarstenKramer,SamuelLeclerc:read,write,delete,revert,admin Default

##http://www.iram.es/IRAMES/mainWiki/Bolometers/ObservingSession
+#acl hermelo,CarstenKramer,NicolasBillot,SamuelLeclerc:read,write,delete,revert,admin Default
-Line 10:
+Line 8:
-For example, the file [[attachment:README_078-13.txt | ~/078-13/README_078-13.txt ]] shows you how to observe the project 078-13.
+For example, the file [[attachment:README_193-13.txt | ~/193-13/README_193-13.txt ]] shows you how to observe the project 193-13.
-Line 15:
+Line 13:
-'''[[ http://www.iram.es/IRAMES/mainWiki/GISMO/Main | Go back to the GISMO Main Wiki ]]'''
+'''[[ http://www.iram.es/IRAMES/mainWiki/FrontPage | Go to the Front Page ]]'''
-Line 22:
+Line 19:
-First log into the [[https://pools.iram.es | Pool data base]] (ask the AoD for the login information) and click on the GISMO tab.
+First log into the [[https://pools.iram.es | Pool data base]] (ask the AoD for the login information) and click on the GISMO/NIKA tab.
-Line 28:
+Line 25:
-Only green projects can be observed.
+Only green projects should be observed.
-Line 50:
+Line 47:
-   ssh -X gismos-13@mrt-lx1.iram.es    (ask the AoD for the password)
+   ssh -X pool_account@mrt-lx1.iram.es    (ask the AoD for the name of the pool account and the password)
-Line 58:
+Line 55:
-   pakoGISMO
+   pakoGISMO | pakoNIKA
-Line 65:
+Line 62:
+== Starting XEphem ==

Log into the mrt-lx3 machine:

{{{
   ssh -X pool_account@mrt-lx3.iram.es
}}}

Type:

{{{
   useNCS
   azElToXephem.py &                   
  .xephem/xephem.exe &
}}}

----
-Line 67:
+Line 82:
-The standard method to set the project information is through a !PaKo script (see for example [[attachment:setup_078-13.pako | setup_078-13.pako ]]). It is IMPORTANT to set the project accordingly before each observation in order to identify the scans observed for each project, keep control on the time used to observe each project, and write the data files in the right directory. For example, before to start to observe the project 078-13 you must type:

{{{
   PAKO> @ ~/078-13/setup_078-13.pako
}}}

When you will be doing tests, or if you have to stop by wind, or whatever, just tape "set project test". That way, no project will loose time due to technical problems, or bad weather.
+The standard method to set the project is:

{{{
   PAKO> set project XXX-YY
}}}

However, for pooled observations this is often done using a setup script (see for example [[attachment:setup_193-13.pako | setup_193-13.pako ]]). For example, before to start to observe the project 193-13 you should type:

{{{
   PAKO> @ ~/193-13/setup_193-13.pako
}}}

It is IMPORTANT to set the project accordingly before each observation in order to identify the scans observed for each project, keep control on the time used to observe each project, and write the data files in the right directory. When you will be doing tests, or if you have to stop by wind, or whatever, just type "set project test". That way, no project will loose time due to technical problems, or bad weather.
-Line 80:
+Line 101:
-Before to start to observe a certain project it is necessary to load its catalog of sources. For example, for project 078-13:

{{{
   PAKO> SOURCE CATALOG ~/078-13/catalog_078-13.sou
+Before to start to observe a certain project it is necessary to load its catalog of sources. Usually, this is automatically done within the setup script. If for some reason you need to load the catalog manually, type:

{{{
   PAKO> SOURCE CATALOG  193-13.sou
-Line 89:
+Line 110:
-   NGC4449     EQ  2000   12:28:09.408    +44:05:32.20    LSR    0.0
   NGC4449-S   EQ  2000   12:28:10.958    +44:05:26.30    LSR    0.0 
   NGC4449-N   EQ  2000   12:28:12.966    +44:07:04.57    LSR    0.0 
   NGC4449-E   EQ  2000   12:28:17.019    +44:06:30.04    LSR    0.0
+   NGC1569   EQ   2000   04:30:50.5   +64:50:55   LSR   0.0
   NGC4449   EQ   2000   12:28:09.4   +44:05:32   LSR   0.0
-Line 98:
+Line 117:
-   PAKO> source NGC4449-N
}}}

----

== Telescope setup ==
+   PAKO> source NGC4449
}}}

----

== Pointing and Focussing ==
-Line 111:
+Line 130:
-Launch the '''[[attachment:gismo_pointing.pako | gismo_pointing ]]''' script:

{{{
   PAKO> @ gismo_pointing
}}}


Check in the GISMO Nexus logsheet for the corrections in azimuth and elevation (columns pnt.dAZ and pnt.dEL). Calculate the new pointing values as:
+Launch the '''cont_pointing_liss''' script:

{{{
   PAKO> @ cont_pointing_liss
}}}

=== NIKA ===

For NIKA, check with the AoD the pointing corrections. See [[http://www.iram.es/IRAMES/mainWiki/Continuum/NIKA/DataReduction | here ]]

=== GISMO ===

For GISMO, check in the Nexus logsheet for the corrections in azimuth and elevation (columns pnt.dAZ and pnt.dEL), and calculate the new pointing values as:
-Line 125:
+Line 149:
-If the new pointing corrections are within 10" of the previous values, the GISMO array with its large field-of-view will still be well centered. A posteriori, crush will do the pointing corrections. Then, there is no need to update the pointing constants used by PaKo. If you still want to do so, say
+If the new pointing corrections are within 10" of the previous values, the array with its large field-of-view will still be well centered. To update the pointing constants used by PaKo, type:
-Line 131:
+Line 155:
-Check the focus using the '''[[attachment:gismo_focus.pako | gismo_focus ]]''' script:

{{{
   PAKO> @ gismo_focus Fcurrent
}}}


where Fcurrent is the current value of the focus. To calculate the new value of the focus open another terminal and use the python script ~/Focus/Focus.py :
+Check the focus using the '''cont_focus''' script:

{{{
   PAKO> @ cont_focus Fcurrent
}}}


where Fcurrent is the current value of the focus. 

For NIKA, check with the AoD the focus correction. For GISMO, to calculate the new value of the focus, open another terminal and use the python script ~/Focus/Focus.py :
-Line 153:
+Line 179:
-Line 155:
+Line 180:
-Line 157:
+Line 181:
-Now the telescope is pointed and focussed, and ready to observe the project.
+Now the telescope is pointed and focussed, and ready to start to observe.
-Line 167:
+Line 191:
-   PAKO> @ gismo_onthefly  16  12  25
+   PAKO> @ cont_onthefly  16  12  25
-Line 174:
+Line 198:
-   PAKO> @ gismo_lissajous 3
+   PAKO> @ cont_lissajous 3
-Line 178:
+Line 202:
-For sequences of scans it is strongly recommended to use scripts.
For example, the script [[attachment:observe_NGC4449.pako | observe_NGC4449.pako]] consists on a long sequence of 10'x10' on-the-fly maps covering completely the galaxy NGC4449 and 3'x3' lissajous maps focused on the main star forming regions NGC4449-N, NGC4449-S, and NGC4449-E.
To launch this script just type:

{{{
   PAKO> @~/078-13/observe_NGC4449
+A sequence of several scans can be commanded using scripts. For example, the script [[attachment:observe_NGC4449.pako | observe_NGC4449.pako]] combines several 10'x10' on-the-fly maps covering the whole galaxy environment and 4'x4' Lissajous maps to optimize the signal of the central regions. To launch this script just type:

{{{
   PAKO> @~/193-13/observe_NGC4449
-Line 191:
+Line 213:
-The beam map consists in a 5'x5' map with ~3" steps between rows and it takes ~18 min. Beam maps are designed to ensure the source is moved over the entire detector. The aim is to calculate the actual pixel offsets in the focal plane (see figure below). To obtain a beam map go to a primary calibrator and launch the '''[[attachment:gismo_beammap.pako | gismo_beammap.pako ]]''' script:


{{{
  PAKO> @ gismo_beammap
+The beam map consists in a 5'x5' map with ~3" steps between rows and a duration ~18 min for GISMO, and 6.7'x3.7' map  with 4" steps between rows and a duration ~12 min for NIKA. Beam maps are designed to ensure the source is moved over all the detectors of the array, in order to characterize and calibrate them (field of view geometry, flat field, stability...). The aim is to calculate the actual pixel offsets in the focal plane (see figure below). To obtain a beam map go to a primary calibrator and launch the '''cont_beammap.pako''' script:
##  script for GISMO, and '''otfgeom.pako''' script for NIKA


{{{
  PAKO> @ cont_beammap
-Line 204:
+Line 227:
-Since the 4th GISMO pool skydips are fully integrated in the IRAM/GISMO pipeline. Before running a skydips, the observer has to de-activate the automatic relocking of the detectors:
+To run a skydip with the IRAM continuum cameras, launch the '''cont_skydip''' script:
): 

{{{
  PAKO> @ cont_skydip
}}}

Please note that when using GISMO, before running a skydip, the observer has to de-activate the automatic relocking of the detectors:
-Line 210:
+Line 240:
-Next, launch the '''[[attachment:gismo_skydip.pako | gismo_skydip ]]''' script:

{{{
  PAKO> @ gismo_skydip
}}}

At present, the observer then needs to switch-on by-hand the automatic relocking of the detectors:
+And once the skydip is finished, the observer needs to switch-on by-hand the automatic relocking of the detectors:
-Line 222:
+Line 246:
+-----

== Obsolete scripts ==

A set of fully tested scripts from previous runs are available within the '''~/PaKo/obs/''' folder. The following list shows how to launch some of the most ''popular'' obsolete scripts:

{{{
GISMO

    PAKO> @ obs/gismo_pointing.pako
    PAKO> @ obs/gismo_lissajous_2mx2m.pako
    PAKO> @ obs/gismo_lissajous_3mx3m.pako
    PAKO> @ obs/gismo_lissajous_4mx4m_2min.pako
    PAKO> @ obs/gismo_lissajous_4mx4m.pako
    PAKO> @ obs/gismo_lissajous_5mx5mfast.pako
    PAKO> @ obs/gismo_lissajous_5mx5m.pako
    PAKO> @ obs/gismo_lissajous_GDF.pako
    PAKO> @ obs/gismo_lissajous_tiny1min.pako
    PAKO> @ obs/gismo_lissajous_tiny2min.pako
    PAKO> @ obs/gismo_lissajous_tiny4min.pako
    PAKO> @ obs/gismo_lissajous_tiny5min.pako
    PAKO> @ obs/gismo_lissajous_tiny10min.pako
    PAKO> @ obs/gismo_otf_6mx6m.pako
    PAKO> @ obs/gismo_otf_8mx8m.pako
    PAKO> @ obs/gismo_otf_10mx10m.pako
    PAKO> @ obs/gismo_otf_30mx30m.pako
    PAKO> @ obs/gismo_otf_beammap.pako


NIKA

    PAKO> @ obs/cross.pako
    PAKO> @ obs/diydown.pako
    PAKO> @ obs/diyup.pako
    PAKO> @ obs/faintliss1.pako
    PAKO> @ obs/faintliss1t.pako
    PAKO> @ obs/faintliss2.pako
    PAKO> @ obs/faintlissfast.pako
    PAKO> @ obs/faintliss.pako
    PAKO> @ obs/faintlisst.pako
    PAKO> @ obs/focusliss.pako
    PAKO> @ obs/focusp2.pako
    PAKO> @ obs/focusp.pako
    PAKO> @ obs/ngc891liss.pako
    PAKO> @ obs/otf10x10.pako
    PAKO> @ obs/otf10x2.pako
    PAKO> @ obs/otf15x10.pako
    PAKO> @ obs/otf3x3_el.pako
    PAKO> @ obs/otf3x3.pako
    PAKO> @ obs/otf4x2.pako
    PAKO> @ obs/otf4x4.pako
    PAKO> @ obs/otf5x5_half.pako
    PAKO> @ obs/otf5x5.pako
    PAKO> @ obs/otf5x5_pol.pako
    PAKO> @ obs/otf5x5slow.pako
    PAKO> @ obs/otfgeom.pako
    PAKO> @ obs/otfgeom_pol.pako
    PAKO> @ obs/otf.pako
    PAKO> @ obs/otfsz.pako
    PAKO> @ obs/pointliss.pako
    PAKO> @ obs/pointliss_pol.pako
    PAKO> @ obs/skydip.pako
    PAKO> @ obs/skydip_test.pako
    PAKO> @ obs/skydip_updown.pako
    PAKO> @ obs/skydip_up.pako
}}}
-Line 231:
+Line 322:
-Last update: 2014.01.14
+Last update: 2014.02.04

Diff for "Continuum/ObservingSession"