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Changeset 39852


Ignore:
Timestamp:
Dec 13, 2016, 2:21:08 PM (10 years ago)
Author:
watersc1
Message:

Done, but I can't figure out bibtex, and don't feel like fighting it. All my citations point to entries in my copy of Ken's lib.bib.

Location:
trunk/doc/release.2015/ps1.detrend
Files:
1 added
1 edited

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  • trunk/doc/release.2015/ps1.detrend/detrend.tex

    r39850 r39852  
    99%\documentclass[preprint2]{aastex}
    1010%\documentclass[preprint2,longabstract]{aastex}
     11
    1112\RequirePackage{color}
    1213\input{astro.sty}
    1314%\usepackage{subcaption}
     15%\usepackage{natbib}
     16%\bibliographystyle{apj}
     17%\bibliographystyle{plain}
    1418
    1519% online version may use color, but print version needs b/w
     
    135139reduction of the Pan-STARRS archival data.  The first two reductions
    136140were used internally for pipeline optimization and the development of
    137 the initial photometric and astrometric reference catalog \citep{ps1_reference_catalog}.  The
     141the initial photometric and astrometric reference catalog \citep{magnier2017c}.  The
    138142products from these reductions were not publicly released, but have
    139143been used to produce a wide range of scientific papers from the
     
    151155
    152156The Pan-STARRS image processing pipeline (IPP) is described elsewhere
    153 \citep{MagnierKaiserChambers2006}, but a short summary follows.  The
     157\citep{magnier2017a}, but a short summary follows.  The
    154158archive of raw exposures is stored on disk, with a database storing
    155159the metadata of exposure parameters.  For the PV3 processing, large
     
    158162This stage performs the image detrending (described below in section
    159163\ref{sec:detrending}), as well as the single epoch photometry
    160 \citep{MagnierXXY}, in parallel on the individual OTA device data.
     164\citep{magnier2017b}, in parallel on the individual OTA device data.
    161165Following the \ippstage{chip} stage is the \ippstage{camera} stage, in
    162166which the astrometry and photometry for the entire exposure is
     
    184188objects detected in that to perform forced photometry on the
    185189individual \ippstage{warp} stage images.  The details of these stages
    186 are provided in \citet{MagnierXXY}.
     190are provided in \citet{magnier2017b}.
    187191
    188192The same reduction procedure described above is also performed in real
     
    195199\ippstage{diff} stage.  This allows the ongoing solar system moving
    196200object search to identify candidates for follow up observations within
    197 24 hours of the initial set of observations \citep{WainscoatXXX}.
     20124 hours of the initial set of observations \citep{2015IAUGA..2251124W}.
    198202
    199203Section \ref{sec:detrending} provides an overview of the detrending
     
    753757In addition to this flat field applied to the individual images, the
    754758ubercal process used to calibrate the database of all detections
    755 \citep{ubercal} constructs internal ``flat field'' corrections.
     759\citep{2012ApJ...756..158S} constructs internal ``flat field'' corrections.
    756760Although a single set of image flat fields was used for the entire PV3
    757761survey, five separate ``seasons'' of database flat fields were needed
    758762to ensure proper calibration.  This indicates that the flat field
    759763response is not completely fixed in time.  More details on this
    760 process are contained in \citet{calibration}.
     764process are contained in \citet{magnier2017c}.
    761765
    762766\subsection{Pattern correction}
     
    18361840individual input exposures against the reference catalog.  Upon the
    18371841conclusion of the survey, the entire set of detection catalogs is
    1838 further re-calibrated in the ``ubercal'' process \citep{ubercal}.
     1842further re-calibrated in the ``ubercal'' process \citep{2012ApJ...756..158S}.
    18391843This produces a more consistent calibration of each exposure across
    18401844the entire region of the sky imaged.  This further calibration is not
    18411845available at the time of stacking, and so there may be small residuals
    1842 in the transparency values as a result of this \citet{calibration}.
     1846in the transparency values as a result of this \citet{magnier2017c}.
    18431847
    18441848%% \czwdraft{Nigel: 5. ``The ouput exposure time is set to the sum of the input exposure times.''
     
    18851889With the flux normalization factors and target PSF chosen, the
    18861890convolution kernels can be calculated for each image.  ISIS kernels
    1887 \citep{ISIS_kernels} are used with FWHM values of 1.5, 3.0, and 6.0
     1891\citep{1998ApJ...503..325A} are used with FWHM values of 1.5, 3.0, and 6.0
    18881892pixels and polynomial orders of 6, 4, and 2.  Regions around the
    18891893sources identified in the input images are extracted, convolved with
     
    21882192data values must first be made positive, which then sets the highest
    21892193quantization sampling near the lowest values in the image.  Following
    2190 techniques used by SDSS \citep{sdss}, we have instead opted to use the
     2194techniques used by SDSS \citep{2000AJ....120.1579Y}, we have instead opted to use the
    21912195inverse hyperbolic sine function to transform the data.  The domain of
    21922196this function allows any input value to be converted.  In addition,
     
    23092313sources that are not static between the two images leave a significant
    23102314remnant.  More information on the difference image construction is
    2311 contained in \citet{pauls_diff_paper}.  The follow section contains a
     2315contained in \citet{price2017}.  The follow section contains a
    23122316overview of the difference image construction used for the data in
    23132317DR2.
     
    23322336
    23332337For warp-warp differences, such as those used for the ongoing Solar
    2334 System moving object search in nightly observations \citep{MOPS}, the
     2338System moving object search in nightly observations \citep{2013PASP..125..357D}, the
    23352339warp that was taken first is used as the template.  As there is less
    23362340certainty in which of the two input images will have better seeing, a
     
    23512355on ensuring that the telescope pointings are as close to identical as
    23522356possible.  The observing strategy to enable this is discussed in more
    2353 detail in \citet{paper1}.
     2357detail in \citet{chambers2017}.
    23542358
    23552359
     
    24652469University (ELTE), and the Los Alamos National Laboratory.
    24662470
     2471%\bibliography{lib}{}
     2472
    24672473
    24682474\end{document}
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