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| Quality plots
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| Same region in: |
SpT = M: |
HD_102212 (M0III-M1II, Z=0.06) |
HD_217357 (M0V, Z=-1.50) |
HD_146051 (M0.5III, Z=0.32) |
HD_33793 (M1V, Z=Unkn) |
HD_202560 (M1-M2V, Z=-1.50) |
HD_106814 (M2III, Z=Unkn) |
HD_95735 (M2V, Z=-0.20) |
HD_167006 (M3III, Z=Unkn) |
HD_104207 (M3, Z=Unkn) |
GL109 (M4, Z=0.0) |
UV_Cet (M5.5, Z=Unkn) |
HD_126327 (M7.5III, Z=-0.50) |
Other SpT:
O
B
A
F
G
K
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Unknown
Telluric
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| UVES NGSL Project: HD_106814 |
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Find here a quality plot for the co-added products.
We display the full spectral region for a setup. The data are rebinned to 5 A bins and are intended
as overview of the spectral slope, and as indication about the S/N quality of the co-added data.
The overview plot has
- the full co-added spectrum (rebinned to 5 A) on top ('overview');
- a signal/noise plot for the co-added spectrum. It comes in two versions: blue is the S/N as calculated from the spectrum (as displayed on top) and its (pipeline-delivered) errorbar file.
Red dots mark a measurement of S/N over 0.5A bins in which the statistical rms is evaluated. In many
cases stellar absorption lines or telluric lines dominate the fluctuations and hence corrupt
the S/N value. But in favourable cases a spectral region will show pure continuum and give a
realistic estimate of S/N. Hence the upper envelope of the red dots can be seen as a S/N
measurement of the final product spectrum, including all noise sources up to a scale of 0.5A.
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