Transcript User Interface - Observatoire de Bordeaux

GAUDI
Ground-based Asteroseismology
Uniform Database Interface
http://ines.laeff.esa.es/corot/
E. Solano
Bases de données en spectroscopie stellaire.
Paris. Sep. 2003
The origins
 Target selection in the COROT mission is a critical
issue (staying six months observing a binary star
would have been very depressing).
Theoretical pulsation models requires a precise
knowledge of the stellar physical parameters (Teff,
log g, metallicity)
 An ambitious ground-based observing programme
(more than 1500 objects, mainly spectroscopy and
photometry) was initiated.
 Having an user-friendly access system to these
data was considered as of fundamental importance
since the beginning of the project.
 March 2001: LAEFF - COROT agreement to develop
GAUDI.
E. Solano. Paris. Sep
Archives: are they necessary?
 Efficiency: The collective impact of the archive
will far exceed what could be produced by the
programs of single observer or team of observers.
 Astronomers might find that the observations
they wanted had already been made, and that it
was simply a matter of retrieving the relevant
information.
 One set of observations can serve many
different scientific purposes, including some not
considered when the observations were made.
 Exploit the time domain.
 Periodic phenomena: Variable stars
 Transient phenomena: SN, NEO, GRB,..
E. Solano
IAA. Feb 2003
The need of Archives (II)
 Legacy: Guarantee that the valuable datasets are
usable by future generations for research and
education.
 Positive “Globalization”: Astronomers from
countries with limited resources have the
opportunity of accessing high-quality data.
“A well-designed and properly implemented
archive is a major contribution toward the
full exploitation from the expensive-to-obtain
observational data”.
E. Solano. Paris. Sep
Raw
Data
+
Processing
Pipeline
Calib.
Files
Database
(Meta-data)
Science
Archive
Storage system
(FITS files)
E. Solano. Paris. Sep
Reduced
data
Data Management
 Data stored in the archive are indexed in an
inventory management subsystem (RDBMS).
 To ensure integrity, metadata will be extracted
from FITS keywords and ingested the database
in an automatic way.
Data Storage
 Data will resided on a mass storage system
(magnetic disks) in FITS format.
 Data integrity requires a well-defined backup
policy and data safekeeping.
E. Solano. Paris. Sep
Raw
Data
+
Calib.
Files
Processing
Pipeline
Database
(Meta-data)
Science
Archive
End-User
Storage system
(FITS files)
User Interface
(HTML)
Reduced
data
Data Retrieval and User Interface System
 The friendliness of the user interface is
extremely important for the archive to be
effectively used by the community at large.
 The UI will be HTML-based to allow simple
use through the Web.
 The system should be easy for new users to
learn.
E. Solano. Paris. Sep
The User Interface
User Interface
Data query & retrieval
c
System description,
On-line help &
Helpdesk
E. Solano. Paris. Sep
Visualisation &
analysis tools
Interoperability
GAUDI. The Help Systems
 Different levels of help to users
 On-line Access to project documentation:
A detailed description of the project, the
archive and access system shall be given
on-line and stored in a format allowing an
easy browsing (e.g. PDF).
 On-line help: Help on a specific keyword
can be obtained by simply clicking on it.
 HelpDesk: to channel questions and to
provide continuous support to users of the
Archive.
E. Solano. Paris. Sep
GAUDI. The Help Systems
On-line Help
E. Solano. Paris. Sep
The User Interface
User Interface
Data query & retrieval
c
System description,
On-line help &
Helpdesk
E. Solano. Paris. Sep
Visualisation &
analysis tools
Interoperability
The GAUDI welcome page
c
•
Access restricted to COROT project
• Username & password provided on demand.
The COROT input query form
The result of the query
Name resolver.
Multidownload with different
compression formats
Link to SIMBAD
The result of the query
Display of the FITS header
The result of the query
Plotting facilities
Zoom
facility
Link to
full
header
Plot can
be saved
as GIF file
The COROT input query form
The result of the query
The COROT input query form
The result of the query
The User Interface
User Interface
Data query & retrieval
c
System description,
On-line help &
Helpdesk
E. Solano. Paris. Sep
Visualisation &
analysis tools
Interoperability
Analysis tools
“A modern multi-wavelength data server must
not be a simply data repository. It must include
tools to help the users in the data analysis”
 Multi-range spectroscopy: building of SEDs
 Comparison to models or theoretical data
 Data mining
E. Solano. Paris. Sep
Comparison to models or theoretical data
s Synthetic
Synthetic
model
model
E. Solano
E. Solano. Paris. Sep
IAA. Feb 2003
The User Interface
User Interface
Data query & retrieval
c
System description,
On-line help &
Helpdesk
E. Solano. Paris. Sep
Visualisation &
analysis tools
Interoperability
The GAUDI Interoperability
Science
Archive
Science
Archive
GAUDI
Science
Archive
Science
Archive
E. Solano. Paris. Sep
Interoperability Levels
 Internal
 Among the Mission & User Archives and the
preparatory archives (COROTSKY and GAUDI).
 External
 First level:
c
 General-purpose catalogues: ADS, SIMBAD
 Second level:
 Other astronomical databases: 2MASS,
DENIS, SLOAN, DSS, ...
 Third level:
 VO federation. Uniform access to a federation
of multi-wavelength distributed archives. Data
exchange according to agreed standards.
E. Solano. Paris. Sep