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NACO
QC zeropoints : GENERAL |
CONICA raw frames taken with the NACO_img_cal_StandardStar template
come in series of 5 files. Instrument related parameters are the
camera, the filter and the dichroic. The naco_img_zpoint recipe
generates a product and calculates a number of QC parameters, where
the most important are ZPOINT and STREHL. See the User Manual for
details. Other quality checks are performed by post-pipeline
processing scripts.
- PRODUCT_PLOT.
This means that for each pipeline product and its associated raw frames
we create a plot with the most significant features.
- QC1 PARAMETER CROSS CHECK. This means that selected QC1 parameters are compared
with the ones previously obtained.
- TRENDING. This means that we store
all qc1 parameters and build Run Charts which simply show the parameter as a function
of time over a larger time interval.
NACO product files follow a certain
naming convention. |
| PRODUCT
PLOT | |
There follows for each mpflat product type a QC1 plot. The Figure caption
is equal for all four plots.
Figure caption
Flux in counts
as derived from the zpoint recipe as a function of the 8 difference frames. Median,
and +-sigma are shown | Background in counts as derived from
the zpoint recipe as a function of the 8 difference frames. Median, and +-sigma
are shown. | Magnitudes, as derived from the the
zpoint recipe as a function of the 8 difference frames. Median, and +-sigma are
shownZoomed: | FWHM as derived from the zpoint recipe as a
function of the 8 difference frames. blue=FWHM_X, green=FWHM_Y, red=sqrt(FWHM_X
* FWHM_Y). |
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| TRENDIND
PLOTS | |
Trending describes the variation of a QC1 parameter within a rge time
range. We show a time range of 4 months and generate 4 trending plots a year.
The variation of the zeropoints are used for two purposes:
- to decide if
a specific night was photometric
- to check on filter efficiency (filter throughput
aging)
- to check on the troughput of the whole (telescope, NAOS, CONICA) system.
- ZPOINT = the photometric zeropoint as given by the zpoint
recipe. Meaning the given values are not corrected for airmass (and extinction).
Note that the zpoint recipe builds 8 difference frames from 5 raw input frames,
rejects the MIN and MAX values and takes the median of the remaining 6 zpoint
values.
ZPOINT (gif
| ps)
- ZPOINT(airmass=1)
= the photometric zeropoint as given by the zpoint recipe, corrected for extinction,
using kappa(J)=0.11, kappa(H)=0.06 and kappa(Ks)=0.07
ZPOINT_corr
(gif | ps)
- ZPOINT(airmmass=1)S27
= the photometric zeropoint collected, using the camear S27 alone, as given
by the zpoint recipe, corrected for extinction, using kappa(J)=0.11, kappa(H)=0.06
and kappa(Ks)=0.07
ZPOINT_corr_S27: (gif
| ps)
- STREHL
ratio per filter = the strehl ratio as measured from the photometric zeropoint
as given by the zpoint recipe per filter
STREHL_ZPF (gif
| ps)
- STREHL
ratio per dichroic = the strehl ratio as measured from the photometric zeropoint
as given by the zpoint recipe per dichroic
STREHL_ZPD (gif
| ps)
- STREHL
ratio per wsf-type = the strehl ratio as measured from the photometric zeropoint
as given by the zpoint recipe per wavefront sensor type
STREHL_ZPT
(gif | ps)
- STREHL
ratio per wfs-mode = the strehl ratio as measured from the photometric zeropoint
as given by the zpoint recipe per wavefront sensor mode
STREHL_ZPM
(gif | ps)
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