Information on Service 'FEROS Public Spectra Web Interface'
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Further access options are discussed below
Spectra from FEROS spectrograph at La Silla's 1.5m telescope as
obtained during commissioning and guaranteed time.
For a list of all services and tables belonging to this service's
resource, see Information on resource 'FEROS Public Spectra'
Service Documentation
The FITS RA and DEC header cards contain positions obtained from the
telescope guidance system. These positions are frequently off by several
arcminutes with respect to the actual object. Therefore, in the metadata
table, the positions used for SSA location are obtained from SIMBAD
whenever the target names could be resolved.
The nomenclature of objects in the FITS header is somewhat eclectic. For the
SSA target name, we use translated names that can be resolved using SIMBAD.
However, there are quite a few names we could no longer make sense of;
we marked these in the SSA target names with a tilda (~). For
these spectra, the SSA location is constructed from the (flaky) positions
in the RA, DEC header cards. Any assistance in figuring
out proper designations for the objects observed is appreciated.
This service currently only serves data from the commissioning phase
and from guaranteed time on the instrument. Spectra taken
in visitor mode may be available from ESO in unreduced form.
If you have reduced spectra obtained with FEROS and would like to publish
them, please do not hesitate to contact gavo@ari.uni-heidelberg.de.
Overview
You can access this service using:
-
form --
an interface for web browsers through an HTML form
Coverage
1.34458 3.52157 eV
1998.76 1999.59
This resource is not (directly) published.
This can mean that it was deemed too unimportant, for internal
use only, or is just a helper for a published service.
Equally likely, however,
it is under development, abandoned in development or otherwise
unfinished. Exercise some caution.
Other services provided on the underlying data
include:
Default Output Fields
The following fields are contained in the output by default. More
fields may be available for selection; these would be given below
in the VOTable output fields.
| Name | Table Head |
Description | Unit | UCD |
|---|
| accref |
Product key |
Access key for the data
|
N/A |
meta.ref.url;meta.dataset |
| dlurl |
Datalink Access |
URL of a datalink document for the dataset (cutouts, different formats, etc)
|
N/A |
N/A |
| location_dec |
Dec |
N/A
|
deg |
pos.eq.dec;meta.main |
| location_ra |
RA |
N/A
|
deg |
pos.eq.ra;meta.main |
| mime |
Type |
MIME type of the file served
|
N/A |
meta.code.mime |
| ssa_aperture |
Aperture |
Angular diameter of aperture
|
deg |
phys.angSize;instr.fov |
| ssa_dateObs |
Date Obs. |
Midpoint of exposure (MJD)
|
d |
time.epoch |
| ssa_specend |
Band end |
Upper value of spectral coordinate
|
m |
em.wl;stat.max |
| ssa_specstart |
Band start |
Lower value of spectral coordinate
|
m |
em.wl;stat.min |
| ssa_targname |
Object |
Common name of object observed.
|
N/A |
meta.id;src |
VOTable Output Fields
The following fields are available in VOTable output. The verbosity
level is a number intended to represent the relative importance
of the field on a scale of 1 to 30. The services take a VERB argument.
A field is included in the output if their verbosity level is
less or equal VERB*10.
| Name | Table Head |
Description | Unit | UCD |
Verb. Level |
|---|
| accref |
Product key |
Access key for the data
|
N/A |
meta.ref.url;meta.dataset |
1 |
| ssa_location |
Location |
ICRS location of aperture center
|
deg |
pos.eq |
5 |
| ssa_dateObs |
Date Obs. |
Midpoint of exposure (MJD)
|
d |
time.epoch |
5 |
| ssa_timeExt |
Exp. Time |
Exposure duration
|
s |
time.duration |
5 |
| ssa_length |
Length |
Number of points in the spectrum
|
N/A |
N/A |
5 |
| accsize |
File size |
Size of the data in bytes
|
byte |
N/A |
11 |
| ssa_dstitle |
Title |
A compact and descriptive designation of the dataset.
|
N/A |
meta.title;meta.dataset |
15 |
| ssa_creatorDID |
C. DID |
Dataset identifier assigned by the creator
|
N/A |
meta.id |
15 |
| ssa_pubDID |
P. DID |
Dataset identifier assigned by the publisher
|
N/A |
meta.ref.ivoid |
15 |
| ssa_cdate |
Proc. Date |
Processing/Creation date
|
N/A |
time;meta.dataset |
15 |
| ssa_pdate |
Pub. Date |
Date last published.
|
N/A |
N/A |
15 |
| ssa_bandpass |
Bandpass |
Bandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.
|
N/A |
instr.bandpass |
15 |
| ssa_cversion |
C. Version |
Creator assigned version for this dataset (will be incremented when this particular item is changed).
|
N/A |
meta.version;meta.dataset |
15 |
| ssa_targname |
Object |
Common name of object observed.
|
N/A |
meta.id;src |
15 |
| ssa_targclass |
Ob. cls |
Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)
|
N/A |
src.class |
15 |
| ssa_redshift |
z |
Redshift of target object
|
N/A |
src.redshift |
15 |
| ssa_targetpos |
Obj. pos |
Equatorial (ICRS) position of the target object.
|
N/A |
pos.eq;src |
15 |
| ssa_snr |
SNR |
Signal-to-noise ratio estimated for this dataset
|
N/A |
stat.snr |
15 |
| ssa_aperture |
Aperture |
Angular diameter of aperture
|
deg |
phys.angSize;instr.fov |
15 |
| ssa_specmid |
Mid. Band |
Midpoint of region covered in this dataset
|
m |
instr.bandpass |
15 |
| ssa_specext |
Bandwidth |
Width of the spectrum
|
m |
instr.bandwidth |
15 |
| ssa_specstart |
Band start |
Lower value of spectral coordinate
|
m |
em.wl;stat.min |
15 |
| ssa_specend |
Band end |
Upper value of spectral coordinate
|
m |
em.wl;stat.max |
15 |
| ssa_csysName |
Sys |
System RA and Dec are given in
|
N/A |
N/A |
15 |
| ssa_spectralucd |
UCD(spectral) |
UCD of the spectral column in the spectra served; when you have wavelengths, use em.wl for vacuum wavelengths, em.wl;obs.atmos for air wavelengths.
|
N/A |
meta.ucd |
15 |
| ssa_spectralunit |
unit(spectral) |
Unit of the spectral column
|
N/A |
meta.unit |
15 |
| ssa_fluxucd |
UCD(flux) |
UCD of the flux column
|
N/A |
meta.ucd |
15 |
| ssa_fluxunit |
unit(flux) |
Unit of the flux column
|
N/A |
meta.unit |
15 |
| ssa_publisher |
Publisher |
Publisher of the datasets included here.
|
N/A |
meta.curation |
15 |
| ssa_creator |
Creator |
Creator of the datasets included here.
|
N/A |
N/A |
15 |
| ssa_collection |
Collection |
A short handle naming the collection this spectrum belongs to.
|
N/A |
N/A |
15 |
| ssa_instrument |
Instrument |
Instrument or code used to produce these datasets
|
N/A |
meta.id;instr |
15 |
| ssa_datasource |
Src |
Method of generation for the data (one of survey, pointed, theory, custom, artificial).
|
N/A |
N/A |
15 |
| ssa_creationtype |
Using |
Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)
|
N/A |
N/A |
15 |
| ssa_reference |
Ref. |
URL or bibcode of a publication describing this data.
|
N/A |
meta.bib.bibcode |
15 |
| ssa_fluxStatError |
Err. flux |
Statistical error in flux
|
N/A |
stat.error;phot.flux.density;em |
15 |
| ssa_fluxSysError |
Sys. Err flux |
Systematic error in flux
|
N/A |
stat.error.sys;phot.flux.density;em |
15 |
| ssa_fluxcalib |
Calib Flux |
Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).
|
N/A |
N/A |
15 |
| ssa_binSize |
Spect. Bin |
Bin size in wavelength
|
m |
em.wl;spect.binSize |
15 |
| ssa_spectStatError |
Err. Spect |
Statistical error in wavelength
|
m |
stat.error;em |
15 |
| ssa_spectSysError |
Sys. Err. Spect |
Systematic error in wavelength
|
m |
stat.error.sys;em |
15 |
| ssa_speccalib |
Calib. Spect. |
Type of wavelength calibration
|
N/A |
meta.code.qual |
15 |
| ssa_specres |
Spec. Res. |
Resolution (in meters of wavelength) on the spectral axis
|
m |
spect.resolution;em.wl |
15 |
| ssa_spaceError |
Err. Spc |
Statistical error in position
|
deg |
stat.error;pos.eq |
15 |
| ssa_spaceCalib |
Calib. Spc |
Type of calibration in spatial coordinates
|
N/A |
meta.code.qual |
15 |
| ssa_spaceRes |
Res. Spc |
Spatial resolution of data
|
deg |
pos.angResolution |
15 |
| mime |
Type |
MIME type of the file served
|
N/A |
meta.code.mime |
20 |
| ssa_model |
Model |
Data model name and version
|
N/A |
N/A |
20 |
| ssa_timeSI |
[Time] |
Time conversion factor in Osuna-Salgado convention.
|
N/A |
N/A |
20 |
| ssa_spectralSI |
[Spectral] |
Spectral conversion factor in Osuna-Salgado convention
|
N/A |
N/A |
20 |
| ssa_fluxSI |
[Flux] |
Flux/magnitude conversion factor in Osuna-Salgado convention
|
N/A |
N/A |
20 |
| ssa_dstype |
Data type |
Type of data (spectrum, time series, etc)
|
N/A |
N/A |
20 |
| owner |
Owner |
Owner of the data
|
N/A |
N/A |
25 |
| embargo |
Embargo ends |
Date the data will become/became public
|
yr |
N/A |
25 |
| ssa_region |
Coverage |
Rough coverage based on location and aperture.
|
N/A |
pos.outline;obs.field |
30 |
Copyright, License, Acknowledgements
If you use this data, please reference
Kaufer, A., et al: Commissioning FEROS, the new high-resolution
spectrograph at La-Silla, 1999Msngr..95....8K.
Citation Info
VOResource XML (that's something exclusively for VO nerds)
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