B/iram IRAM Observation Logs (IRAM 1991-)
IRAM Observation Logs (Plateau de Bure Interferometer and 30-m telescope)
Dan M., Neri R., Sievers A.
ADC_Keywords: Observatory log ; Interferometry ; Radio sources
Description:
The Institut de Radio Astronomie Millimetrique (IRAM) was founded in
1979 and is operated as a French-German-Spanish collaboration. Its
partner institutes are the CNRS (Centre National de la Recherche
Scientifique, France), the MPG (Max Planck Gesellschaft, Germany), and
the IGN (Instituto Geografico Nacional, Spain). The principal activity
of IRAM is the study of cold matter (molecular gas and dust) in the
solar system, in our Galaxy, and out to cosmological distances in
order to determine its composition, density, mass, temperature, and
kinematics.
IRAM operates two observatories at millimeter wavelengths which are
open to the international astronomical community: The 30-m single-dish
telescope on Pico Veleta (2850m), Spain, and the NOEMA interferometer
on the Plateau de Bure (2550m) in France. Both sites are at high
altitude to reduce the absorption by water vapor. The observatories are
supported by the IRAM offices and laboratories in Granada and Grenoble.
The observation log included here concerns the Plateau de Bure site,
and summarizes the observations made there from December 1990.
The observations log of the 30-m single-dish telescope covers a
period starting in January 2009. This log was produced using a header
archive, a collaborative effort between IRAM and IAA/CSIC.
NOEMA (NOrthern Extended Millimeter Array) is the successor to the
Plateau du Bure observatory. During its history, the observatory at
the Plateau de Bure underwent several track extensions, received
additional antennas (all of 15m diameter and similar construction as
the first ones) and technical upgrades. From a three antenna
interferometer with a maximum baseline of 288 meters in 1988, it has
evolved to a twelve-antenna array with baselines up to 1700 meters
in 2022.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
pdbi.dat 157 21396 The Plateau de Bure Interferometer Observation Log
since 1991-12-01
pdbi_pi.dat 80 3224 List of PI investigators of PdBI instrument
noema.dat 169 10570 The Plateau de Bure Interferometer (Noema)
Observation Log since 2016
noema_pi.dat 80 1710 List of PI investigators of Noema instrument
30m.dat 200 846025 List of observations at 30m instrument
since 2009-09-30
30m_pi.dat 80 2095 List of PI investigators of 30m instrument
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See also:
http://www.iram-institute.org/ : the IRAM Home Page
Byte-by-byte Description of file: pdbi.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Nw [11,18] Internal indicator
4- 11 A8 --- Prog Identification code of the program
13- 24 A12 --- Name Source name, as mentioned in the
observing program
26- 29 I4 yr Obs.Y Starting date of the Observation (year) (5)
30 A1 --- --- [-]
31- 32 I2 "month" Obs.M Starting date of the Observation (month) (5)
33 A1 --- --- [-]
34- 35 I2 d Obs.D Starting date of the Observation (day) (5)
37- 38 I2 h t1.h LST Time of the first scan on source
39 A1 --- --- [:]
40- 41 I2 min t1.m LST Time of the first scan on source
43- 44 I2 h t2.h LST Time of the last scan on source
45 A1 --- --- [:]
46- 47 I2 min t2.m LST Time of the last scan on source
49- 54 I6 s tos Total on-source correlation time
56- 58 A3 --- Type Program type (1)
60- 63 I4 yr oEq ? Original equinox of position (2)
65- 66 I2 h RAh ? Right Ascension J2000 (hours)
67 A1 --- --- [:]
68- 69 I2 min RAm ? Right Ascension J2000 (minutes)
70 A1 --- --- [:]
71- 78 F8.5 s RAs ? Right Ascension J2000 (seconds)
79 A1 --- DE- Declination J2000 (sign)
80- 81 I2 deg DEd ? Declination J2000 (degrees)
82 A1 --- --- [:]
83- 84 I2 arcmin DEm ? Declination J2000 (minutes)
85 A1 --- --- [:]
86- 92 F7.4 arcsec DEs ? Declination J2000 (seconds)
94- 99 F6.1 km/s Vel Velocity of the source (3)
100 A1 --- n_Vel [LH] LSR or Heliocentric velocity
102-107 I6 MHz Flow ?=0 Sky Frequency of the 3mm receiver (6)
108 A1 --- n_Flow [UL] Signal Upper/Lower band of the 3mm receiver
110-115 I6 MHz Fhigh ?=0 Sky Frequency of the 1mm receiver (6)
116 A1 --- n_Fhigh [UL] Signal Upper/Lower band of the 1mm receiver
118-119 A2 --- pol [HV ] Horizontal/Vertical polarisations (6)
120-121 A2 --- p4 [HV ] Polarisation of 4GHz continuum (6)
123-125 A3 --- Conf Configuration code of the interferometer
127-157 A31 --- Config Detailed configuration (4)
--------------------------------------------------------------------------------
Note (1): the Type is one of:
DET=detection MAP=mapping MOS=mosaicing SNA=snapshot
Note (2):
The original position was expressed as 1950 or 2000 position; all
positions have been converted to J2000 in this version of the log.
Note (3):
The velocity may be forced to zero if the velocity is integrated in
the frequency.
Note (4): W00 is the crossing point of the E-W and N antennae, and one unit
corresponds to approximatively 8 meters.
Note (5): No observation was done in the periods:
* 1999-Sep-30 to 2000-Dec-03
* 2006-Sep-25 to 2007-Jan-18 (installation of the new receiver)
Note (6): For the observations made up to 2006, the columns Flow and Fhigh
list the frequencies in the 2 available bands corresponding to 3mm and
1mm. From 2007 on, the actual min and max frequencies are listed in
these 2 columns, and the 2 columns pol and p4 were added.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: noema.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Nw [11,19] Internal indicator
4- 11 A8 --- Prog Identification code of the program
13- 24 A12 --- Name Source name, as mentioned in the
observing program
26- 29 I4 yr Obs.Y Starting date of the Observation (year) (5)
30 A1 --- --- [-]
31- 32 I2 "month" Obs.M Starting date of the Observation (month) (5)
33 A1 --- --- [-]
34- 35 I2 d Obs.D Starting date of the Observation (day) (5)
37- 38 I2 h t1.h LST Time of the first scan on source
39 A1 --- --- [:]
40- 41 I2 min t1.m LST Time of the first scan on source
43- 44 I2 h t2.h LST Time of the last scan on source
45 A1 --- --- [:]
46- 47 I2 min t2.m LST Time of the last scan on source
49- 54 I6 s tos Total on-source correlation time
56- 58 A3 --- Type Program type (1)
60- 63 I4 yr oEq ? Original equinox of position (2)
65- 66 I2 h RAh ? Right Ascension J2000 (hours)
67 A1 --- --- [:]
68- 69 I2 min RAm ? Right Ascension J2000 (minutes)
70 A1 --- --- [:]
71- 78 F8.5 s RAs ? Right Ascension J2000 (seconds)
79 A1 --- DE- Declination J2000 (sign)
80- 81 I2 deg DEd ? Declination J2000 (degrees)
82 A1 --- --- [:]
83- 84 I2 arcmin DEm ? Declination J2000 (minutes)
85 A1 --- --- [:]
86- 92 F7.4 arcsec DEs ? Declination J2000 (seconds)
94- 99 F6.1 km/s Vel Velocity of the source (3)
100 A1 --- n_Vel [LH] LSR or Heliocentric velocity
102-107 I6 MHz Flow ?=0 Minimum Sky Frequency (6)
108 A1 --- n_Flow [UL] Signal Upper/Lower band
110-115 I6 MHz Fhigh ?=0 Maximum Sky Frequency (6)
116 A1 --- n_Fhigh [UL] Signal Upper/Lower band
118-119 A2 --- pol [HV ] Horizontal/Vertical polarisations (6)
120-121 A2 --- p4 [HV ] Polarisation of 4GHz continuum (6)
123-125 A3 --- Conf Configuration code of the interferometer
127-169 A43 --- Config Detailed configuration (4)
--------------------------------------------------------------------------------
Note (1): the Type is one of:
DET=detection MAP=mapping MOS=mosaicing SNA=snapshot
Note (2):
The original position was expressed as 1950 or 2000 position; all
positions have been converted to J2000 in this version of the log.
Note (3):
The velocity may be forced to zero if the velocity is integrated in
the frequency.
Note (4): W00 is the crossing point of the E-W and N antennae, and one unit
corresponds to approximatively 8 meters.
Note (5): No observation was done in the periods:
* 1999-Sep-30 to 2000-Dec-03
* 2006-Sep-25 to 2007-Jan-18 (installation of the new receiver)
Note (6): For the observations made up to 2006, the columns Flow and Fhigh
list the frequencies in the 2 available bands corresponding to 3mm and
1mm. From 2007 on, the actual min and max frequencies are listed in
these 2 columns, and the 2 columns pol and p4 were added.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: *_pi.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Prog Identification code of the program
14- 80 A67 --- PI Principal Investigator's name
--------------------------------------------------------------------------------
Byte-by-byte Description of file: 30m.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Target source name
22- 22 A1 --- sys [BJG] equinox system
23- 28 F6.1 yr Eq ? equinox year
39- 40 I2 h RAh []? Right ascension (hours) J2000
41 A1 --- --- [:]
42- 43 I2 min RAm ? Right ascension (minutes) J2000
44 A1 --- --- [:]
45- 49 F5.2 s RAs ? Right ascension (seconds) J2000
56 A1 --- DE- Declination (sign) J2000
57- 58 I2 deg DEd ? Declination (degrees) J2000
59 A1 --- --- [:]
60- 61 I2 arcmin DEm ? Declination (minutes) J2000
62 A1 --- --- [:]
63- 66 F4.1 arcsec DEs ? Declination (seconds) J2000
73- 76 I4 yr Obs.Y Starting date of the Observation (year)
(from ncsID)
77 A1 --- --- [-]
78- 79 I2 "month" Obs.M Starting date of the Observation (month)
80 A1 --- --- [-]
81- 82 I2 d Obs.D Starting date of the Observation (day)
83 A1 --- --- [.]
84- 87 I4 --- scan Scan No. (Date.scan = ncsID)
90- 91 I2 h t1.h ? Starting time in UTC (hour)
92 A1 --- --- ? [:]
93- 94 I2 min t1.m ? Starting time (min)
95 A1 --- --- ? [:]
96- 99 F4.1 sec t1.s ? Starting time (sec)
101-102 I2 h t2.h ? End time (hour)
103 A1 --- --- ? [:]
104-105 I2 min t2.m ? End time (min)
106 A1 --- --- ? [:]
107-110 F4.1 sec t2.s ? End time (sec)
112-122 A11 -- obsMode Observation mode (1)
125-139 A15 --- Prog Identification code of the program
142-149 F8.5 --- tau ? Zenith τ at 225 GHz from tipping taumeter
159-171 A13 --- receiv Short name of the receiver(band) used
176-187 A12 --- line Name of line observed
191-200 F10.5 GHz Freq Frequency used for the observation
--------------------------------------------------------------------------------
Note (1): the various observation modes are:
* VLBI
* onOff (taking data on and off source in quick succession)
* onTheFlyMap
* pointing
* track
* calibrate
* focus
* tip (a calibration to measure the opacity)
--------------------------------------------------------------------------------
Acknowledgements:
* Michel Dan (IRAM, Plateau de Bure)
* Albrecht Sievers (Pico Veleta)
History:
* 25-Mar-2004: file "pdbi.dat" until December 2002
* 15-Dec-2004: file "pdbi.dat" until December 2003
* 04-Nov-2005: file "pdbi.dat" until December 2004
* 16-Apr-2007: file "pdbi.dat" until March 2006
* 14-Nov-2007: file "pdbi.dat" until September 2006
* 14-Apr-2008: file "pdbi.dat" until March 2007.
Includes the 2 new columns pol and p4.
* 06-Apr-2009: file "pdbi.dat" until March 2008.
* 10-Dec-2009: file "pdbi.dat" until September 2008.
* 12-Apr-2010: file "pdbi.dat" until March 2009.
* 21-Oct-2010: file "pdbi.dat" until September 2009 (14158 obs.)
* 07-Jan-2011: 2009 log of 30m
* 07-Apr-2011: file "pdbi.dat" until March 2010.
Column "p4" is now 2 bytes wide (was 1 byte only)
* 09-Oct-2011: file "pdbi.dat" until September 2010.
* 09-Mar-2012: Addition of 2010 log of 30m observations.
List of PI's separated in 2 files: pdbi_pi.dat and 30m_pi.dat
* 23-Oct-2012: file "pdbi.dat" until September 2011.
* 30-Jan-2013: Addition of 2011 log of 30m observations
* 11-Apr-2013: Addition of 2011-10 to 2012-03 observations in "pdbi.dat"
* 06-Aug-2013: Addition of 30m observations between 2012-01 and 2012-06
* 19-Dec-2013: Addition of 2012-04 to 2012-09 observations in "pdbi.dat"
* 09-Jan-2014: Addition of 30m observations between 2012-07 and 2012-12
* 28-Feb-2014: Fixed "pdbi_pi.dat" file
* 05-Jun-2014: Addition of 2012-10 to 2013-03 observations in "pdbi.dat"
* 16-Jan-2015: Addition of 2013-07 to 2013-12 observations to "30m.dat"
* 21-Jan-2015: Addition of 2013-04 tp 2013-09 observations in "pdbi.dat"
* 07-May-2015: Addition of 2013-10 to 2014-03 observations in "pdbi.dat"
Column "Prog" enlarged (from 4 to 8 bytes)
* 29-Jul-2015: Addition of 2014-01 to 2014-07 observations to "30m.dat
* 05-Feb-2016: Addition observation to 30m.dat
* 22-Feb-2016: Addition observation to pdbi.dat
* 31-aug-2016: Addition observation to pdbi.dat
* 10-jan-2017: File "noema.dat"
* 12-jul-2018: Addition observation to 30m.dat
* 15-oct-2018: Addition observation to pdbi.dat
* 25-Jan-2019: Addition observation to 30m.dat
* 23-jul-2019: Addition observation to pdbi.dat
* 28-oct-2019: Addition observation to 30m.dat
* 12-nov-2019: Addition to noema.dat
* 25-aug-2020: Addition observation to 30m.dat
* 26-oct-2020: Addition to noema
* 23-feb-2021: new version 30m
* 26-Apr-2021: new version
* 11-Apr-2023: new noema version
* 27-jul-2023: new 30m version
* 23-Oct-2023: new noema version
* 27-Mai-2024: new version (30m + noema)
* 29-Jan-2025: Update ReadMe Descriptions
* 07-Apr-2025: new noema + 30m version
(End) Francois Ochsenbein [CDS] 14-Apr-2008