| General
Description |
| The ESO Archive Database
contains all observations performed with the ESO telescopes.
Currently available in the archive
are the data from the VLT, NTT, MPG/ESO 2.2m, and the ESO
3.6m telescopes.
The observations themselves are stored in an off-line archive and
have a proprietary period of one year.
After this period the archival data sets are available to
the general astronomical community of
the ESO member states and Chile.
Images and spectra are stored in the archive in an unreduced (raw)
form
together with the
calibration and auxilliary data.
The Database query result shows
a brief description of each of the scientific observations in the archive. |
| To retrieve offline observational data you have to register
as an ESO/ST-ECF Archive user. |
| The following sections provide short help on how to
use and what to enter for the various query parameters offered in the
web interface pages of the Archive. The query interface allows to
use operators as well; for more information on that please refer to the
wdb help page. |
|
Target Information
|
| This section provides
information about the query parameters used to find observations of specific
named objects or
centered on specified RA and DEC
coordinates. |
| Target |
Target identifier will be resolved into coordinates by Simbad (default)
or searched against the OBJECT keyword value
included in the data FITS header |
| Search Box |
If the target name has been resolved by Simbad you
can enter here the size
of a search box around the target coordinates. |
| RA |
Alternatively to the Target you can specify RA here. Recognised format is either
decimal degrees or hh mm ss. |
| DEC |
Alternatively to the Target you can specify DEC here. Recognised format is either
decimal degrees or
dd mm ss |
|
Observing Programme Information and Scheduling Parameters
|
| This section provides
information on the query parameters used to find observations
carried out during specific nights or in a
specific program. |
| Night |
Enter here the date of the beginning of the night in DD MM YYYY or
specify a range of nights in the Start and End fields |
| Start |
Enter the date of the first night in DD MM YYYY and
select a time from the pull-down menu.
|
| End |
Enter the date of the last night in DD MM YYYY and
select a time from the pull-down menu.
|
| Prog ID |
Specification of the ESO programme identification code, for example 63.H-0345*. |
| Programme Type |
See Normal programmes, Guaranteed Time Observations, Director's Discretionary Time Proposals, Target of Opportunity Proposals, Large programmes. |
| Period |
Telescope time for ESO telescopes on Paranal and La Silla is allocated twice a year in periods of 6 months. |
| Sched from |
Starting date of scheduling. |
| Abstract |
Abstracts of ESO proposals are made publicly available
once the proprietary period of the associated data is over. |
| PI and CoIs |
Principal Investigator and Co-Investigators |
| OB Information |
| This section provides
information on the query parameters used to find observations
carried out with certain constraints
as specified in the observation block. |
| OB Name |
Enter the Observation Block name here, if known. |
| OB ID |
Enter the OB Identification here, if known. |
| TPL Id |
The instrument specific forms include a dropdown menu of
Template Identifications from which you can select. |
| Ins Mode |
The instrument specific forms include a dropdown menu of
Instrument
Mode
from which you can select. |
| DPR category |
Data Product category can be selected from the dropdown menu;
valid options include SCIENCE, and CALIB.
|
| DPR Type |
Data Product Type. In the generic form you have to enter a string.
In the instrument specific
forms there is a dropdown menu
od Data Product Types from which you can select. Valid strings
include SKY-FLAT, SKY, BIAS, OBJECT, STD, POLAR, DARK, WAVE-LAMP. |
DPR Tech |
Data Product Technique. In the generic form you have to enter a
string.
In the instrument specific
forms there is a pull-down menu where which you can select. Valid strings
include SPECTRUM, IMAGE, MOSS, and Polarimetry. |
| OBS Mode |
This is also called DPR Tech and the instrument specific forms provide
a drop-down menu to select from. |
| Exptime |
The total exposure time *on* target. |
| Telescope |
In a generic form a drop-down menu provides the allowed telescope names. |
| Instrument |
A drop-down menu provides the allowed instrument names. Or you may enter a string or a
combination of strings. |
| ChipID |
Valid ESO Chip ID as specified in the FITS headers. |
| Filter |
The instrument specific forms provide a drop down menu to select
from.
|
| Grism |
As above.
|
| Grating |
As above. |
| Slit |
As above. |
| Archive Information |
| This section provides
information on the query parameters used to find observations
according to Archive specific criteria. |
| DP ID |
The DP ID is the unique identifier used in
the Archive. It consists of an instrument prefix followed by a timestamp. |
| Orig Name |
The original file name as used on the instrument work station at the telescope. |
| Release Date |
There is a one year proprietary period
for the PI, after that the data is released. |
Header |
The Archive stores the complete FITS headers of all files
on-line. They can be viewed by clicking on the 'H' link. |
Calibration Selector |
This service tries to find all the raw and master calibration
files valid
for a given SCIENCE frame. It is available in the 'CAL' column of
the
query result page and through a checkbox labeled
'Find calibrations when requesting datasets' at the top of the
same
page. |
| Ambient Parameters |
| This section provides
information on the query parameters used to find observations
carried out under certain ambient conditions. |
| DIMM-Savg |
The average FWHM seeing conditions calculated over the exposure time
as measured by the DIMM station. |
| Airmass |
The airmass at the start of the exposure as recorded in the header. |
| Night? |
The Archive contains a flag indicating whether the observation has
been carried out during the day, astronomical twilight or night. |
| Associated Products |
| This section provides
information on data that may be associated with a particular Prog ID. |
| Raw Products |
This is a link to raw data products. |
| Reduced Products |
This is a link to reduced science data products. They are available as Data Packages. A pointer to the package description as well as the possibility to access each file of the package individually are also provided.
Science Products are at present available for a limited number of observations;
they are being added to the Archive on a regular basis.
|
| Publications |
This is a link to the ESO data-based publications recorded in the
ESO Telescope Bibliography database.
It contains scientific papers published mainly in refereed journals.
No data returned to your query does not mean that there is no publication.
Papers may not yet be recorded in the ESO Telescope Bibliography database.
|
|
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