EOS P96 - 6. Calibrating and reducing X-shooter data; 6.1 X-shooter calibration plan

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VLT-MAN-ESO-14650-4942
P96
24.06.2015
104 of 161
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
6. Calibrating and reducing X-shooter data
6.1 X-shooter calibration plan
The calibration plan has been revised during P86, P87, P88, P89, it is now implemented as
indicated below. A better follow-up of and new long term calibrations have been included.
A summary of the calibration plan manual is given in Table 15 and 17.
Table 15: X-shooter calibration plan summary
Calibration
UVB frames
VIS frames
NIR frames
Frequency
Purpose
Bias
5/read. mode
5/read. mode
daily
Master bias and check CCD bias
properties
NIR darks
a
N/A
N/A
3 per DIT
daily
Master dark, bad pix. map
IFU UVB/VIS/NIR
flats
1 D
2,
1 halo
lamp
1
1 ON-OFF
Bi-daily
IFU FF for monitoring of the
UVB/VIS ADCs and the IFU
Slit/IFU flats
5/setting D
2
lamp
5/setting halo.
lamp
5/setting
5 ON-OFF
daily
Pixel-to-pixel variations, blaze
function correction when triggered
by science
Arcs single
pinhole (Th/Ar or
Ar/Xe/Hg/Kr)
1
1
1 ON-OFF
Every 2 days
Pipeline calibration: first guess
disp. solution.
FMCK
Flat single
pinhole
b
1 D
2
lamp
1 Halo. lamp
1
1 ON-OFF
Every 2 days
Pipeline calibration: order
localization ORDERDEF
1x1 binning in UVB/VIS
Arcs multi-pinhole
(Th/Ar or
Ar/Xe/Hg/Kr)
1
1
1 ON-OFF
Every 2 days
Wavelength and spatial scale
determination/calibration
WAVE
Arcs through
slit/IFU
(Th/Ar or
Ar/Xe/Hg/Kr)
1/setting
1/setting
1 ON-OFF /
setting
daily
Wavelength shift between multi-
pinholes and slits, spectral
resolution, ARC, none taken in
2x2 due to remnants.
Flat multi pinhole
1
1
1 ON-OFF
On request
Multi-order definition taken on
request
IFU slitlet
distances
2
2
2
6-monthly
TBC
Pipeline calibration: cube
reconstruction
Radial velocity
standard
c
2
2
2
On request
Accurate radial vel. calibration
Telluric standard
1
2 (P91)
1
2 (P91)
1
2 (P91)
1/obs.
Correct for telluric abs. Only in
stare mode in SM up to P90, in
nodding starting from P91. No 5”
slits observations
Spectro-
photometric
standard
2
2
2
daily
Response curve, absolute flux
calib. In nodding mode, in slit
mode it is taken every time the
instrument is used, in IFU mode,
only when the science performed
at night did it.
Spectroscopic
skyflats
As requested
As requested
As requested
On request
Twilight spectroscopic skyflats
Imaging mode
see
The
corresponding
section