coordinatesJ2000
The equatorial coordinates of the source, referred to equinox 2000, epoch 2000
S
This is a link to the relevant SIMBAD query page for this source.
E
This is a link to any observations of the source which may be present in the ELODIE archive.
seq
A sequence number which identifies a particular spectrum. It is used
to uniquely identify an entry in the database.
date
The calendar date corresponding to the beginning of the night (UT) on which this
particular spectrum was obtained.
fiber
Indicates which of the two available fiber pairs (AB) was used : HE
(high efficiency) or HR (high resolution). See the spectrograph web page
for details on the fiber throughput and corresponding spectral resolution.
dprtype
This parameter group (fiber_A,fiber_B,correlation_mask) indicates how the fibers (A and B) were
used and which mask was requested for the cross-correlation.
Possible values for fiber_B can be : DARK (no light
admitted), SKY (exposure to the sky background) or WAVE (simultaneous Thorium lamp calibration). In
the latter two cases it should later be possible to retrieve the B fiber data.
exptime
Actual exposure time in seconds.
sn26
Gives the signal-to-noise ratio at the center of order 26 [out of orders 0-38], corresponding
to 5550 Å (near the center of the V band).
view_spec
Allows the user to view an auto-scaled plot of the one-dimensional spectrum (s1d), rebinned to a
constant wavelength step (0.01 Å step), where the orders have been corrected for the blaze
function and reconnected. Note that there is at present a residual blaze effect (5%) left
over in the HE mode. If the spectrum is less than a year old, the data are not
yet available to outside users. For more information on the 's1d' format, see
the data
products page.
view_head
Allows the user to browse through the FITS header corresponding to this spectrum.
get_spec
Allows the user to download the 's1d' spectrum FITS file.
get_e2ds
Allows the user to download the extracted spectrum in order space (e2ds). This
file contains 39 lines of 4077 pixels corresponding to the actual spectral
sampling by the CCD. Each 's2ds' spectrum is associated with a 'wave' file, having
the same format, containing the wavelegths for all the pixels of the object
spectrum, and with a 'blaze' spectrum, derived from a tungsten lamp exposure,
which can be used to do a preliminary correction for the blaze function.
customize
This page allows the user to customize the spectrum in different ways before viewing it and/or
downloading it.