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Timestamp:
Sep 17, 2015, 4:58:58 PM (11 years ago)
Author:
watersc1
Message:

As I'm leaving today, I need to commit my changes to the schema votables. These are consistent with the current trunk version, and column changes are documented on the wiki ​http://svn.pan-starrs.ifa.hawaii.edu/trac/ipp/wiki/ippToPSPSSAS39CZWNotes

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  • trunk/ippToPsps/config/tables.FW.vot

    r38723 r38751  
    44  <RESOURCE>
    55    <TABLE name="ForcedWarpMeta">
    6       <DESCRIPTION>VOTable description of PSPS table ForcedWarpMeta</DESCRIPTION>
     6      <DESCRIPTION>Contains the metadata related to a sky-aligned distortion corrected warp image, upon which forced photometry is performed.  The astrometric and photometric calibration of the warp image are listed.</DESCRIPTION>
    77      <PARAM arraysize="1" datatype="char" ucd="meta.bib.author" name="Author" value="PSPS"></PARAM>
    88      <FIELD name="forcedWarpID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    9         <DESCRIPTION>forced warp identifier identifier</DESCRIPTION>
     9        <DESCRIPTION>Unique forced warp identifier.</DESCRIPTION>
    1010      </FIELD>
    1111      <FIELD name="batchID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    12         <DESCRIPTION>batch identifier</DESCRIPTION>
     12        <DESCRIPTION>Internal database batch identifier.</DESCRIPTION>
    1313      </FIELD>
    1414      <FIELD name="surveyID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    15         <DESCRIPTION>survey flag identifier</DESCRIPTION>
     15        <DESCRIPTION>Survey identifier.  Details in the Survey table.</DESCRIPTION>
    1616      </FIELD>
    1717      <FIELD name="filterID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    18         <DESCRIPTION>filter identifier</DESCRIPTION>
     18        <DESCRIPTION>Filter identifier.  Details in the Filter table.</DESCRIPTION>
     19      </FIELD>
     20      <FIELD name="tessID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="0">
     21        <DESCRIPTION>Tessellation identifier.  Details in the TessellationType table.</DESCRIPTION>
     22      </FIELD>
     23      <FIELD name="projectionID" arraysize="1" datatype="short" unit="dimensionless" default="-1">
     24        <DESCRIPTION>Projection cell identifier.</DESCRIPTION>
    1925      </FIELD>
    2026      <FIELD name="skyCellID" arraysize="1" datatype="float" unit="dimensionless" default="NA">
    21         <DESCRIPTION>single float giving PrimaryCell.SkyCell identifier</DESCRIPTION>
     27        <DESCRIPTION>Skycell region identifier.</DESCRIPTION>
    2228      </FIELD>
    2329      <FIELD name="photoCalID" arraysize="1" datatype="int" unit="dimensionless" default="NA">
    24         <DESCRIPTION>photometry code</DESCRIPTION>
    25       </FIELD>
    26       <FIELD name="magSat" arraysize="1" datatype="float" unit="magnitude" default="-999">
    27         <DESCRIPTION>saturation magnitude level</DESCRIPTION>
    28       </FIELD>
    29       <FIELD name="analVer" arraysize="100" datatype="char" unit="alphanumeric" default="-999">
    30         <DESCRIPTION>IPP software analysis release</DESCRIPTION>
     30        <DESCRIPTION>Photometric calibration identifier.  Details in the PhotoCal table.</DESCRIPTION>
     31      </FIELD>
     32      <FIELD name="magSat" arraysize="1" datatype="float" unit="magnitudes" default="-999">
     33        <DESCRIPTION>Saturation magnitude.</DESCRIPTION>
     34      </FIELD>
     35      <FIELD name="analysisVer" arraysize="100" datatype="char" unit="dimensionless" default="">
     36        <DESCRIPTION>IPP software analysis release version.</DESCRIPTION>
    3137      </FIELD>
    3238      <FIELD name="expTime" arraysize="1" datatype="float" unit="seconds" default="-999">
    33         <DESCRIPTION>exposure time of positive image</DESCRIPTION>
    34       </FIELD>
    35       <FIELD name="completMag" arraysize="1" datatype="float" unit="magnitude" default="-999">
    36         <DESCRIPTION>95% completion level in mag</DESCRIPTION>
     39        <DESCRIPTION>Exposure time of the source frame/exposure for this warp image.</DESCRIPTION>
     40      </FIELD>
     41      <FIELD name="completMag" arraysize="1" datatype="float" unit="magnitudes" default="-999">
     42        <DESCRIPTION>95% Completion limit.</DESCRIPTION>
    3743      </FIELD>
    3844      <FIELD name="astroScat" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    39         <DESCRIPTION>astrometric scatter for warp</DESCRIPTION>
     45        <DESCRIPTION>Astrometric scatter relative to reference catalog.</DESCRIPTION>
    4046      </FIELD>
    4147      <FIELD name="photoScat" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    42         <DESCRIPTION>photometric scatter for warp</DESCRIPTION>
     48        <DESCRIPTION>Photometric scatter relative to reference catalog.</DESCRIPTION>
    4349      </FIELD>
    4450      <FIELD name="nAstroRef" arraysize="1" datatype="int" unit="dimensionless" default="-999">
    45         <DESCRIPTION>number of astrometric reference sources</DESCRIPTION>
    46       </FIELD>
    47       <FIELD name="nPhoRef" arraysize="1" datatype="int" unit="dimensionless" default="-999">
    48         <DESCRIPTION>number of photometric reference sources</DESCRIPTION>
    49       </FIELD>
    50       <FIELD name="psfModelID" arraysize="100" datatype="char" unit="dimensionless" default="8000">
    51         <DESCRIPTION>PSF model identifier</DESCRIPTION>
     51        <DESCRIPTION>Number of astrometric reference sources.</DESCRIPTION>
     52      </FIELD>
     53      <FIELD name="nPhotoRef" arraysize="1" datatype="int" unit="dimensionless" default="-999">
     54        <DESCRIPTION>Number of photometric reference sources.</DESCRIPTION>
     55      </FIELD>
     56      <FIELD name="psfModelID" arraysize="100" datatype="char" unit="dimensionless" default="">
     57        <DESCRIPTION>PSF model identifier.</DESCRIPTION>
    5258      </FIELD>
    5359      <FIELD name="psfFwhm_mean" arraysize="1" datatype="double" unit="arcsec" default="-999">
    54         <DESCRIPTION>mean PSF FWHM in the stack</DESCRIPTION>
     60        <DESCRIPTION>Mean PSF full width at half maximum at image center.</DESCRIPTION>
    5561      </FIELD>
    5662      <FIELD name="psfFwhm_max" arraysize="1" datatype="double" unit="arcsec" default="-999">
    57         <DESCRIPTION>maximum PSF FWHM in the stack</DESCRIPTION>
    58       </FIELD>
    59       <FIELD name="photoZero" arraysize="1" datatype="float" unit="magnitude" default="-999">
    60         <DESCRIPTION>local derived photometric zero point</DESCRIPTION>
    61       </FIELD>
    62       <FIELD name="photoColor" arraysize="1" datatype="float" unit="magnitude" default="-999">
    63         <DESCRIPTION>local derived photometric color term</DESCRIPTION>
    64       </FIELD>
    65       <FIELD name="ctype1" arraysize="100" datatype="char" unit="alphanumeric" default="8000">
    66         <DESCRIPTION>name of astrometric projection in RA</DESCRIPTION>
    67       </FIELD>
    68       <FIELD name="ctype2" arraysize="100" datatype="char" unit="alphanumeric" default="8000">
    69         <DESCRIPTION>name of astrometric projection in DEC</DESCRIPTION>
     63        <DESCRIPTION>Upper quartile PSF full width at half maximum from sources on the warp image.</DESCRIPTION>
     64      </FIELD>
     65      <FIELD name="photoZero" arraysize="1" datatype="float" unit="magnitudes" default="-999">
     66        <DESCRIPTION>Locally derived photometric zero point for this warp image.</DESCRIPTION>
     67      </FIELD>
     68      <FIELD name="photoColor" arraysize="1" datatype="float" unit="magnitudes" default="-999">
     69        <DESCRIPTION>Locally derived photometric color term for this warp image.</DESCRIPTION>
     70      </FIELD>
     71      <FIELD name="ctype1" arraysize="100" datatype="char" unit="dimensionless" default="">
     72        <DESCRIPTION>Name of astrometric projection in right ascension.</DESCRIPTION>
     73      </FIELD>
     74      <FIELD name="ctype2" arraysize="100" datatype="char" unit="dimensionless" default="">
     75        <DESCRIPTION>Name of astrometric projection in declination.</DESCRIPTION>
    7076      </FIELD>
    7177      <FIELD name="crval1" arraysize="1" datatype="double" unit="degrees" default="-999">
    72         <DESCRIPTION> RA corresponding to reference pixel</DESCRIPTION>
     78        <DESCRIPTION>Right ascension corresponding to reference pixel.</DESCRIPTION>
    7379      </FIELD>
    7480      <FIELD name="crval2" arraysize="1" datatype="double" unit="degrees" default="-999">
    75         <DESCRIPTION> DEC corresponding to reference pixel</DESCRIPTION>
    76       </FIELD>
    77       <FIELD name="crpix1" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    78         <DESCRIPTION>reference pixel value for RA</DESCRIPTION>
    79       </FIELD>
    80       <FIELD name="crpix2" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    81         <DESCRIPTION>reference pixel value for DEC</DESCRIPTION>
     81        <DESCRIPTION>Declination corresponding to reference pixel.</DESCRIPTION>
     82      </FIELD>
     83      <FIELD name="crpix1" arraysize="1" datatype="double" unit="sky pixels" default="-999">
     84        <DESCRIPTION>Reference pixel for right ascension.</DESCRIPTION>
     85      </FIELD>
     86      <FIELD name="crpix2" arraysize="1" datatype="double" unit="sky pixels" default="-999">
     87        <DESCRIPTION>Reference pixel for declination.</DESCRIPTION>
    8288      </FIELD>
    8389      <FIELD name="cdelt1" arraysize="1" datatype="double" unit="degrees/pixel" default="-999">
    84         <DESCRIPTION>scale factor for RA</DESCRIPTION>
     90        <DESCRIPTION>Pixel scale in right ascension.</DESCRIPTION>
    8591      </FIELD>
    8692      <FIELD name="cdelt2" arraysize="1" datatype="double" unit="degrees/pixel" default="-999">
    87         <DESCRIPTION>scale factor for DEC</DESCRIPTION>
     93        <DESCRIPTION>Pixel scale in declination.</DESCRIPTION>
    8894      </FIELD>
    8995      <FIELD name="pc001001" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    90         <DESCRIPTION>elements of rotation/scale matrix</DESCRIPTION>
     96        <DESCRIPTION>Linear transformation matrix element between image pixel x and right ascension.</DESCRIPTION>
    9197      </FIELD>
    9298      <FIELD name="pc001002" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    93         <DESCRIPTION>elements of rotation/scale matrix</DESCRIPTION>
     99        <DESCRIPTION>Linear transformation matrix element between image pixel y and right ascension.</DESCRIPTION>
    94100      </FIELD>
    95101      <FIELD name="pc002001" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    96         <DESCRIPTION>elements of rotation/scale matrix</DESCRIPTION>
     102        <DESCRIPTION>Linear transformation matrix element between image pixel x and declination.</DESCRIPTION>
    97103      </FIELD>
    98104      <FIELD name="pc002002" arraysize="1" datatype="double" unit="dimensionless" default="-999">
    99         <DESCRIPTION>elements of rotation/scale matrix</DESCRIPTION>
     105        <DESCRIPTION>Linear transformation matrix element between image pixel y and declination.</DESCRIPTION>
    100106      </FIELD>
    101107      <FIELD name="dataRelease" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    102         <DESCRIPTION>Data release</DESCRIPTION>
     108        <DESCRIPTION>Data release version.</DESCRIPTION>
    103109      </FIELD>
    104110      <DATA>
    … …  
    107113    </TABLE>
    108114    <TABLE name="ForcedWarpMeasurement">
    109       <DESCRIPTION>VOTable description of PSPS table ForcedWarpMeasurement</DESCRIPTION>
     115      <DESCRIPTION>Contains single epoch forced photometry of individual measurements of objects detected in the stacked images.  The identifiers connecting the measurement back to the original image and to the object association are provided.  PSF, aperture, and Kron (1980) photometry are included, along with sky and detector coordinate positions.  References: Kron, R. G. 1980, ApJS, 43, 305. </DESCRIPTION>
    110116      <PARAM arraysize="1" datatype="char" ucd="meta.bib.author" name="Author" value="PSPS"></PARAM>
    111117      <FIELD name="objID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    112         <DESCRIPTION>ODM object identifier</DESCRIPTION>
     118        <DESCRIPTION>Unique object identifier.</DESCRIPTION>
    113119      </FIELD>
    114120      <FIELD name="uniquePspsFWid" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    115         <DESCRIPTION>unique psps id</DESCRIPTION>
     121        <DESCRIPTION>Unique internal PSPS forced warp identifier.</DESCRIPTION>
    116122      </FIELD>
    117123      <FIELD name="detectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    118         <DESCRIPTION>ODM  detection identifier</DESCRIPTION>
     124        <DESCRIPTION>Unique detection identifier.</DESCRIPTION>
    119125      </FIELD>
    120126      <FIELD name="ippObjID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    121         <DESCRIPTION>object id generated by IPP</DESCRIPTION>
     127        <DESCRIPTION>IPP internal object identifier.</DESCRIPTION>
    122128      </FIELD>
    123129      <FIELD name="ippDetectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    124         <DESCRIPTION>detection id generated by IPP</DESCRIPTION>
     130        <DESCRIPTION>IPP internal detection identifier.</DESCRIPTION>
    125131      </FIELD>
    126132      <FIELD name="filterID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    127         <DESCRIPTION>filter ID: g=1, r=2, i=3, z=4, y=5, w=6, ...</DESCRIPTION>
     133        <DESCRIPTION>Filter identifier.  Details in the Filter table.</DESCRIPTION>
    128134      </FIELD>
    129135      <FIELD name="surveyID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    130         <DESCRIPTION>survey flag identifier</DESCRIPTION>
     136        <DESCRIPTION>Survey identifier.  Details in the Survey table.</DESCRIPTION>
    131137      </FIELD>
    132138      <FIELD name="forcedSummaryID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    133         <DESCRIPTION>forced warp summary meta identifer</DESCRIPTION>
     139        <DESCRIPTION>Forced warp summary meta identifier</DESCRIPTION>
    134140      </FIELD>
    135141      <FIELD name="forcedWarpID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    136         <DESCRIPTION>forced warp measurement meta identifer</DESCRIPTION>
     142        <DESCRIPTION>Unique forced warp identifier.</DESCRIPTION>
    137143      </FIELD>
    138144      <FIELD name="randomWarpID" arraysize="1" datatype="double" unit="dimensionless" default="NA">
    139         <DESCRIPTION> random warp id</DESCRIPTION>
     145        <DESCRIPTION>Random value drawn from the interval between zero and one.</DESCRIPTION>
     146      </FIELD>
     147      <FIELD name="tessID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="0">
     148        <DESCRIPTION>Tessellation identifier.  Details in the TessellationType table.</DESCRIPTION>
     149      </FIELD>
     150      <FIELD name="projectionID" arraysize="1" datatype="short" unit="dimensionless" default="-1">
     151        <DESCRIPTION>Projection cell identifier.</DESCRIPTION>
    140152      </FIELD>
    141153      <FIELD name="skyCellID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    142         <DESCRIPTION>single float givijng PrimaryCell.SkyCell identifier</DESCRIPTION>
     154        <DESCRIPTION>Skycell region identifier.</DESCRIPTION>
    143155      </FIELD>
    144156      <FIELD name="dvoRegionID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    145         <DESCRIPTION> identifier to dvo spacial region</DESCRIPTION>
    146       </FIELD>
    147       <FIELD name="obsTime" arraysize="1" datatype="double" unit="MeanJulianDays" default="-999">
    148         <DESCRIPTION> Time of mid observation of positive detection in Mean Julian Days</DESCRIPTION>
    149       </FIELD>
    150       <FIELD name="zp" arraysize="1" datatype="float" unit="magnitude" default="0">
    151         <DESCRIPTION>zeropoint (only thing needed to convert adu/sec to AB
    152         mag), note no zpErr</DESCRIPTION>
    153       </FIELD>
    154       <FIELD name="telluricExt" arraysize="1" datatype="float" unit="magnitude" default="NA">
    155         <DESCRIPTION>estimated extinction due to non-photometric conditions</DESCRIPTION>
     157        <DESCRIPTION>Internal DVO region identifier.</DESCRIPTION>
     158      </FIELD>
     159      <FIELD name="obsTime" arraysize="1" datatype="double" unit="days" default="-999">
     160        <DESCRIPTION>Modified Julian Date at the midpoint of the observation.</DESCRIPTION>
     161      </FIELD>
     162      <FIELD name="zp" arraysize="1" datatype="float" unit="magnitudes" default="0">
     163        <DESCRIPTION>Photometric zeropoint.</DESCRIPTION>
     164      </FIELD>
     165      <FIELD name="telluricExt" arraysize="1" datatype="float" unit="magnitudes" default="NA">
     166        <DESCRIPTION>Estimated Telluric extinction due to non-photometric observing conditions.</DESCRIPTION>
    156167      </FIELD>
    157168      <FIELD name="expTime" arraysize="1" datatype="float" unit="seconds" default="-999">
    158         <DESCRIPTION>exposure time (informational)</DESCRIPTION>
     169        <DESCRIPTION>Exposure time of the frame/exposure.</DESCRIPTION>
    159170      </FIELD>
    160171      <FIELD name="airMass" arraysize="1" datatype="float" unit="dimensionless" default="0">
    161         <DESCRIPTION>airmass (informational)</DESCRIPTION>
     172        <DESCRIPTION>Airmass at midpoint of the exposure.</DESCRIPTION>
    162173      </FIELD>
    163174      <FIELD name="FpsfFlux" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    164         <DESCRIPTION> PSF instrumental flux (in analog-to-digital units/sec) or adu/sec</DESCRIPTION>
     175        <DESCRIPTION>PSF instrumental flux.</DESCRIPTION>
    165176      </FIELD>
    166177      <FIELD name="FpsfFluxErr" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    167         <DESCRIPTION> estimated error in flux</DESCRIPTION>
     178        <DESCRIPTION>Error in PSF flux.</DESCRIPTION>
    168179      </FIELD>
    169180      <FIELD name="FpsfMajorFWHM" arraysize="1" datatype="float" unit="arcsec" default="-999">
    170         <DESCRIPTION>model PSF width in major axis</DESCRIPTION>
     181        <DESCRIPTION>PSF major axis FWHM.</DESCRIPTION>
    171182      </FIELD>
    172183      <FIELD name="FpsfMinorFWHM" arraysize="1" datatype="float" unit="arcsec" default="-999">
    173         <DESCRIPTION>model PSF width in minor axis</DESCRIPTION>
     184        <DESCRIPTION>PSF minor axis FWHM.</DESCRIPTION>
    174185      </FIELD>
    175186      <FIELD name="FpsfTheta" arraysize="1" datatype="float" unit="degrees" default="-999">
    176         <DESCRIPTION>model PSF orientation angles degrees East of North</DESCRIPTION>
     187        <DESCRIPTION>PSF major axis orientation.</DESCRIPTION>
    177188      </FIELD>
    178189      <FIELD name="FpsfCore" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    179         <DESCRIPTION>model PSF core parameter [k in (1 + kz + z^1.66)]</DESCRIPTION>
     190        <DESCRIPTION>PSF core parameter k, where F = F0 / (1 + k r^2 + r^3.33).</DESCRIPTION>
    180191      </FIELD>
    181192      <FIELD name="FpsfQf" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    182         <DESCRIPTION>PSF coverage factor</DESCRIPTION>
     193        <DESCRIPTION>PSF coverage factor.</DESCRIPTION>
    183194      </FIELD>
    184195      <FIELD name="FpsfQfPerfect" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    185         <DESCRIPTION>PSF-weighted fraction of pixels totally unmasked</DESCRIPTION>
     196        <DESCRIPTION>PSF weighted fraction of pixels totally unmasked.</DESCRIPTION>
    186197      </FIELD>
    187198      <FIELD name="FpsfChiSq" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    188         <DESCRIPTION>reduced-chisq of the psf model fit. (ndof?, npix?)</DESCRIPTION>
     199        <DESCRIPTION>Reduced chi squared value of the PSF model fit.</DESCRIPTION>
    189200      </FIELD>
    190201      <FIELD name="FpsfLikelihood" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    191         <DESCRIPTION>PSF likelihood</DESCRIPTION>
    192       </FIELD>
    193       <FIELD name="FmomentXX" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    194         <DESCRIPTION> moment XX</DESCRIPTION>
    195       </FIELD>
    196       <FIELD name="FmomentXY" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    197         <DESCRIPTION> moment XY</DESCRIPTION>
    198       </FIELD>
    199       <FIELD name="FmomentYY" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    200         <DESCRIPTION> moment YY</DESCRIPTION>
    201       </FIELD>
    202       <FIELD name="FmomentR1" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    203         <DESCRIPTION> first radial moment</DESCRIPTION>
    204       </FIELD>
    205       <FIELD name="FmomentRH" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    206         <DESCRIPTION> half radial moment</DESCRIPTION>
    207       </FIELD>
    208       <FIELD name="FmomentM3C" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    209         <DESCRIPTION> 3rd moment cos(theta)</DESCRIPTION>
    210       </FIELD>
    211       <FIELD name="FmomentM3S" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    212         <DESCRIPTION> 3rd moment sin(theta)</DESCRIPTION>
    213       </FIELD>
    214       <FIELD name="FmomentM4C" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    215         <DESCRIPTION> 4th moment cos(theta)</DESCRIPTION>
    216       </FIELD>
    217       <FIELD name="FmomentM4S" arraysize="1" datatype="float" unit="warp pixels" default="-999">
    218         <DESCRIPTION> 4th moment sin(theta)</DESCRIPTION>
     202        <DESCRIPTION>Likelihood that this detection is best fit by a PSF.</DESCRIPTION>
     203      </FIELD>
     204      <FIELD name="FmomentXX" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     205        <DESCRIPTION>Second moment M_xx.</DESCRIPTION>
     206      </FIELD>
     207      <FIELD name="FmomentXY" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     208        <DESCRIPTION>Second moment M_xy.</DESCRIPTION>
     209      </FIELD>
     210      <FIELD name="FmomentYY" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     211        <DESCRIPTION>Second moment M_yy.</DESCRIPTION>
     212      </FIELD>
     213      <FIELD name="FmomentR1" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     214        <DESCRIPTION>First radial moment.</DESCRIPTION>
     215      </FIELD>
     216      <FIELD name="FmomentRH" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     217        <DESCRIPTION>Half radial moment (r^0.5 weighting).</DESCRIPTION>
     218      </FIELD>
     219      <FIELD name="FmomentM3C" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     220        <DESCRIPTION>Moment M3C = M_xxx - 3 * M_xyy.</DESCRIPTION>
     221      </FIELD>
     222      <FIELD name="FmomentM3S" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     223        <DESCRIPTION>Moment M3S = 3 * M_xxy - M_yyy.</DESCRIPTION>
     224      </FIELD>
     225      <FIELD name="FmomentM4C" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     226        <DESCRIPTION>Moment M4C = M_xxxx - 6 * M_xxyy + M_yyyy.</DESCRIPTION>
     227      </FIELD>
     228      <FIELD name="FmomentM4S" arraysize="1" datatype="float" unit="sky pixels" default="-999">
     229        <DESCRIPTION>Moment M4S = 4 * M_xxxy - 4 * M_xyyy.</DESCRIPTION>
    219230      </FIELD>
    220231      <FIELD name="FapFlux" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    221         <DESCRIPTION> Aperture Flux</DESCRIPTION>
     232        <DESCRIPTION>Aperture instrumental flux.</DESCRIPTION>
    222233      </FIELD>
    223234      <FIELD name="FapFluxErr" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    224         <DESCRIPTION> Aperture Flux error</DESCRIPTION>
     235        <DESCRIPTION>Error in aperture flux.</DESCRIPTION>
    225236      </FIELD>
    226237      <FIELD name="FapFillF" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    227         <DESCRIPTION> Aperture fill factor</DESCRIPTION>
     238        <DESCRIPTION>Aperture fill factor.</DESCRIPTION>
    228239      </FIELD>
    229240      <FIELD name="FkronFlux" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    230         <DESCRIPTION> Kron flux</DESCRIPTION>
     241        <DESCRIPTION>Kron (1980) instrumental flux.</DESCRIPTION>
    231242      </FIELD>
    232243      <FIELD name="FkronFluxErr" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    233         <DESCRIPTION> Kron flux error</DESCRIPTION>
     244        <DESCRIPTION>Error in Kron (1980) instrumental flux.</DESCRIPTION>
    234245      </FIELD>
    235246      <FIELD name="FkronRad" arraysize="1" datatype="float" unit="arcsec" default="-999">
    236         <DESCRIPTION> Kron radius</DESCRIPTION>
    237       </FIELD>
    238       <FIELD name="Fsky" arraysize="1" datatype="float" unit="adu/sec/pixel" default="-999">
    239         <DESCRIPTION> PSF sky level at source</DESCRIPTION>
    240       </FIELD>
    241       <FIELD name="FskyErr" arraysize="1" datatype="float" unit="adu/sec/pixel" default="-999">
    242         <DESCRIPTION> estimated error in sky</DESCRIPTION>
     247        <DESCRIPTION>Kron (1980) radius.</DESCRIPTION>
     248      </FIELD>
     249      <FIELD name="Fsky" arraysize="1" datatype="float" unit="adu/seconds/pixel" default="-999">
     250        <DESCRIPTION>Background sky level.</DESCRIPTION>
     251      </FIELD>
     252      <FIELD name="FskyErr" arraysize="1" datatype="float" unit="adu/seconds/pixel" default="-999">
     253        <DESCRIPTION>Error in background sky level.</DESCRIPTION>
    243254      </FIELD>
    244255       <FIELD name="FinfoFlag" arraysize="1" datatype="long" unit="dimensionless" default="-999">
    245         <DESCRIPTION>flag indicating provenance information</DESCRIPTION>
     256        <DESCRIPTION>Information flag bitmask indicating details of the photometry.  Values listed in DetectionFlags.</DESCRIPTION>
    246257      </FIELD>
    247258       <FIELD name="FinfoFlag2" arraysize="1" datatype="long" unit="dimensionless" default="-999">
    248         <DESCRIPTION>combination of cmf and dvo flags</DESCRIPTION>
     259        <DESCRIPTION>Information flag bitmask indicating details of the photometry.  Values listed in DetectionFlags2.</DESCRIPTION>
    249260      </FIELD>
    250261       <FIELD name="FinfoFlag3" arraysize="1" datatype="long" unit="dimensionless" default="-999">
    251         <DESCRIPTION>combination of cmf and dvo flags</DESCRIPTION>
     262        <DESCRIPTION>Information flag bitmask indicating details of the photometry.  Values listed in DetectionFlags3.</DESCRIPTION>
    252263      </FIELD>
    253264      <FIELD name="dataRelease" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    254         <DESCRIPTION>Data release when this detection was originally taken. Recalibrations do not affect this value.</DESCRIPTION>
     265        <DESCRIPTION>Data release version.</DESCRIPTION>
    255266      </FIELD>
    256267      <DATA>
    … …  
    259270    </TABLE>
    260271    <TABLE name="ForcedWarpExtended">
    261       <DESCRIPTION>VOTable description of PSPS table ForcedWarpExtended</DESCRIPTION>
     272      <DESCRIPTION>Contains the single epoch forced photometry fluxes within the SDSS R5 (r = 3.00 arcsec), R6 (r = 4.63 arcsec), and R7 (r = 7.43 arcsec) apertures (Stoughton 2002) for objects detected in the stacked images.  References:  Stoughton, C., Lupton, R. H., Bernardi, M., et al. 2002, AJ, 123, 485.</DESCRIPTION>
    262273      <PARAM arraysize="1" datatype="char" ucd="meta.bib.author" name="Author" value="PSPS"></PARAM>
    263274      <FIELD name="objID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    264         <DESCRIPTION>ODM object identifier</DESCRIPTION>
     275        <DESCRIPTION>Unique object identifier.</DESCRIPTION>
    265276      </FIELD>
    266277      <FIELD name="uniquePspsFWid" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    267         <DESCRIPTION>unique psps id</DESCRIPTION>
     278        <DESCRIPTION>Unique internal PSPS forced warp identifier.</DESCRIPTION>
    268279      </FIELD>
    269280      <FIELD name="detectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    270         <DESCRIPTION>ODM  detection identifier</DESCRIPTION>
     281        <DESCRIPTION>Unique detection identifier.</DESCRIPTION>
    271282      </FIELD>
    272283      <FIELD name="ippObjID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    273         <DESCRIPTION>object id generated by IPP</DESCRIPTION>
     284        <DESCRIPTION>IPP internal object identifier.</DESCRIPTION>
    274285      </FIELD>
    275286      <FIELD name="ippDetectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    276         <DESCRIPTION>detection id generated by IPP</DESCRIPTION>
     287        <DESCRIPTION>IPP internal detection identifier.</DESCRIPTION>
    277288      </FIELD>
    278289      <FIELD name="filterID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    279         <DESCRIPTION>filter ID: g=1, r=2, i=3, z=4, y=5, w=6, ...</DESCRIPTION>
     290        <DESCRIPTION>Filter identifier.  Details in the Filter table.</DESCRIPTION>
    280291      </FIELD>
    281292      <FIELD name="surveyID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    282         <DESCRIPTION>survey flag identifier</DESCRIPTION>
     293        <DESCRIPTION>Survey identifier.  Details in the Survey table.</DESCRIPTION>
    283294      </FIELD>
    284295      <FIELD name="forcedWarpID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    285         <DESCRIPTION>forced warp measurement meta identifer</DESCRIPTION>
     296        <DESCRIPTION>Unique forced warp identifier.</DESCRIPTION>
    286297      </FIELD>
    287298      <FIELD name="randomWarpID" arraysize="1" datatype="double" unit="dimensionless" default="NA">
    288         <DESCRIPTION> random warp id</DESCRIPTION>
     299        <DESCRIPTION>Random value drawn from the interval between zero and one.</DESCRIPTION>
     300      </FIELD>
     301      <FIELD name="tessID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="0">
     302        <DESCRIPTION>Tessellation identifier.  Details in the TessellationType table.</DESCRIPTION>
     303      </FIELD>
     304      <FIELD name="projectionID" arraysize="1" datatype="short" unit="dimensionless" default="-1">
     305        <DESCRIPTION>Projection cell identifier.</DESCRIPTION>
    289306      </FIELD>
    290307      <FIELD name="skyCellID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    291         <DESCRIPTION>single float givijng PrimaryCell.SkyCell identifier</DESCRIPTION>
     308        <DESCRIPTION>Skycell region identifier.</DESCRIPTION>
    292309      </FIELD>
    293310      <FIELD name="dvoRegionID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    294         <DESCRIPTION> identifier to dvo spacial region</DESCRIPTION>
    295       </FIELD>
    296       <FIELD name="obsTime" arraysize="1" datatype="double" unit="MeanJulianDays" default="-999">
    297         <DESCRIPTION> Time of mid observation of positive detection in Mean Julian Days</DESCRIPTION>
     311        <DESCRIPTION>Internal DVO region identifier.</DESCRIPTION>
     312      </FIELD>
     313      <FIELD name="obsTime" arraysize="1" datatype="double" unit="days" default="-999">
     314        <DESCRIPTION>Modified Julian Date at the midpoint of the observation.</DESCRIPTION>
    298315      </FIELD>
    299316      <FIELD name="flxR5" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    300         <DESCRIPTION>Flux inside r = 5</DESCRIPTION>
     317        <DESCRIPTION>Flux from forced photometry measurement within an aperture of radius r = 3.00 arcsec.</DESCRIPTION>
    301318      </FIELD>
    302319      <FIELD name="flxR5Err" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    303         <DESCRIPTION>estimated error in flxR5</DESCRIPTION>
     320        <DESCRIPTION>Error in flux from forced photometry measurement within an aperture of radius r = 3.00 arcsec.</DESCRIPTION>
    304321      </FIELD>
    305322      <FIELD name="flxR5Std" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    306         <DESCRIPTION>estimated standard deviation in flxR5</DESCRIPTION>
     323        <DESCRIPTION>Standard deviation of flux from forced photometry measurement within an aperture of radius r = 3.00 arcsec.</DESCRIPTION>
    307324      </FIELD>
    308325      <FIELD name="flxR5Fill" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    309         <DESCRIPTION>estimated filling factor at R5</DESCRIPTION>
     326        <DESCRIPTION>Aperture fill factor for forced photometry measurement within an aperture of radius r = 3.00 arcsec.</DESCRIPTION>
    310327      </FIELD>
    311328      <FIELD name="flxR6" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    312         <DESCRIPTION>Flux inside r = 6</DESCRIPTION>
     329        <DESCRIPTION>Flux from forced photometry measurement within an aperture of radius r = 4.63 arcsec.</DESCRIPTION>
    313330      </FIELD>
    314331      <FIELD name="flxR6Err" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    315         <DESCRIPTION>estimated error in flxR6</DESCRIPTION>
     332        <DESCRIPTION>Error in flux from forced photometry measurement within an aperture of radius r = 4.63 arcsec.</DESCRIPTION>
    316333      </FIELD>
    317334      <FIELD name="flxR6Std" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    318         <DESCRIPTION>estimated standard deviation in flxR6</DESCRIPTION>
     335        <DESCRIPTION>Standard deviation of flux from forced photometry measurement within an aperture of radius r = 4.63 arcsec.</DESCRIPTION>
    319336      </FIELD>
    320337      <FIELD name="flxR6Fill" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    321         <DESCRIPTION>estimated filling factor at R6</DESCRIPTION>
     338        <DESCRIPTION>Aperture fill factor for forced photometry measurement within an aperture of radius r = 4.63 arcsec.</DESCRIPTION>
    322339      </FIELD>
    323340      <FIELD name="flxR7" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    324         <DESCRIPTION>Flux inside r = 7</DESCRIPTION>
     341        <DESCRIPTION>Flux from forced photometry measurement within an aperture of radius r = 7.43 arcsec.</DESCRIPTION>
    325342      </FIELD>
    326343      <FIELD name="flxR7Err" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    327         <DESCRIPTION>estimated error in flxR7</DESCRIPTION>
     344        <DESCRIPTION>Error in flux from forced photometry measurement within an aperture of radius r = 7.43 arcsec.</DESCRIPTION>
    328345      </FIELD>
    329346      <FIELD name="flxR7Std" arraysize="1" datatype="float" unit="adu/seconds" default="-999">
    330         <DESCRIPTION>estimated standard deviation in flxR7</DESCRIPTION>
     347        <DESCRIPTION>Standard deviation of flux from forced photometry measurement within an aperture of radius r = 7.43 arcsec.</DESCRIPTION>
    331348      </FIELD>
    332349      <FIELD name="flxR7Fill" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    333         <DESCRIPTION>estimated filling factor at R7</DESCRIPTION>
     350        <DESCRIPTION>Aperture fill factor for forced photometry measurement within an aperture of radius r = 7.43 arcsec.</DESCRIPTION>
    334351      </FIELD>
    335352      <DATA>
    … …  
    338355    </TABLE>
    339356    <TABLE name="ForcedWarpLensing">
    340       <DESCRIPTION>VOTable description of PSPS table ForcedWarpLensing</DESCRIPTION>
     357      <DESCRIPTION>Contains the Kaiser et al. (1995) lensing parameters measured from the forced photometry of objects detected in stacked images on the individual single epoch data.  References: Kaiser, N., Squires, G., & Broadhurst, T. 1995, ApJ, 449, 460.</DESCRIPTION>
    341358      <PARAM arraysize="1" datatype="char" ucd="meta.bib.author" name="Author" value="PSPS"></PARAM>
    342359      <FIELD name="objID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    343         <DESCRIPTION>ODM object identifier</DESCRIPTION>
     360        <DESCRIPTION>Unique object identifier.</DESCRIPTION>
    344361      </FIELD>
    345362      <FIELD name="uniquePspsFWid" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    346         <DESCRIPTION>unique psps id</DESCRIPTION>
     363        <DESCRIPTION>Unique internal PSPS forced warp identifier.</DESCRIPTION>
    347364      </FIELD>
    348365      <FIELD name="detectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    349         <DESCRIPTION>ODM  detection identifier</DESCRIPTION>
     366        <DESCRIPTION>Unique detection identifier.</DESCRIPTION>
    350367      </FIELD>
    351368      <FIELD name="ippObjID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    352         <DESCRIPTION>object id generated by IPP</DESCRIPTION>
     369        <DESCRIPTION>IPP internal object identifier.</DESCRIPTION>
    353370      </FIELD>
    354371      <FIELD name="ippDetectID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    355         <DESCRIPTION>detection id generated by IPP</DESCRIPTION>
     372        <DESCRIPTION>IPP internal detection identifier.</DESCRIPTION>
    356373      </FIELD>
    357374      <FIELD name="filterID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    358         <DESCRIPTION>filter ID: g=1, r=2, i=3, z=4, y=5, w=6, ...</DESCRIPTION>
     375        <DESCRIPTION>Filter identifier.  Details in the Filter table.</DESCRIPTION>
    359376      </FIELD>
    360377      <FIELD name="surveyID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="NA">
    361         <DESCRIPTION>survey flag identifier</DESCRIPTION>
     378        <DESCRIPTION>Survey identifier.  Details in the Survey table.</DESCRIPTION>
    362379      </FIELD>
    363380      <FIELD name="forcedWarpID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    364         <DESCRIPTION>forced warp measurement meta identifer</DESCRIPTION>
     381        <DESCRIPTION>Unique forced warp identifier.</DESCRIPTION>
    365382      </FIELD>
    366383      <FIELD name="randomWarpID" arraysize="1" datatype="double" unit="dimensionless" default="NA">
    367         <DESCRIPTION> random warp id</DESCRIPTION>
     384        <DESCRIPTION>Random value drawn from the interval between zero and one.</DESCRIPTION>
     385      </FIELD>
     386      <FIELD name="tessID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="0">
     387        <DESCRIPTION>Tessellation identifier.  Details in the TessellationType table.</DESCRIPTION>
     388      </FIELD>
     389      <FIELD name="projectionID" arraysize="1" datatype="short" unit="dimensionless" default="-1">
     390        <DESCRIPTION>Projection cell identifier.</DESCRIPTION>
    368391      </FIELD>
    369392      <FIELD name="skyCellID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    370         <DESCRIPTION>single float givijng PrimaryCell.SkyCell identifier</DESCRIPTION>
     393        <DESCRIPTION>Skycell region identifier.</DESCRIPTION>
    371394      </FIELD>
    372395      <FIELD name="dvoRegionID" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    373         <DESCRIPTION> identifier to dvo spacial region</DESCRIPTION>
    374       </FIELD>
    375       <FIELD name="obsTime" arraysize="1" datatype="double" unit="MeanJulianDays" default="-999">
    376         <DESCRIPTION> Time of mid observation of positive detection in Mean Julian Days</DESCRIPTION>
     396        <DESCRIPTION>Internal DVO region identifier.</DESCRIPTION>
     397      </FIELD>
     398      <FIELD name="obsTime" arraysize="1" datatype="double" unit="days" default="-999">
     399        <DESCRIPTION>Modified Julian Date at the midpoint of the observation.</DESCRIPTION>
    377400      </FIELD>
    378401      <FIELD name="lensObjSmearX11" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    379         <DESCRIPTION>per-object smear polarizability X11 term</DESCRIPTION>
     402        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X11 term from forced photometry.</DESCRIPTION>
    380403      </FIELD>
    381404      <FIELD name="lensObjSmearX12" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    382         <DESCRIPTION>per-object smear polarizability X12 term</DESCRIPTION>
     405        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X12 term from forced photometry.</DESCRIPTION>
    383406      </FIELD>
    384407      <FIELD name="lensObjSmearX22" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    385         <DESCRIPTION>per-object smear polarizability X22 term</DESCRIPTION>
     408        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X22 term from forced photometry.</DESCRIPTION>
    386409      </FIELD>
    387410      <FIELD name="lensObjSmearE1" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    388         <DESCRIPTION>per-object smear polarizability E1 term</DESCRIPTION>
     411        <DESCRIPTION>Kaiser et al. (1995) equation (A12) smear polarizability e1 term from forced photometry.</DESCRIPTION>
    389412      </FIELD>
    390413      <FIELD name="lensObjSmearE2" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    391         <DESCRIPTION>per-object smear polarizability E2 term</DESCRIPTION>
     414        <DESCRIPTION>Kaiser et al. (1995) equation (A12) smear polarizability e2 term from forced photometry.</DESCRIPTION>
    392415      </FIELD>
    393416      <FIELD name="lensObjShearX11" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    394         <DESCRIPTION>per-object shear polarizability X11 term</DESCRIPTION>
     417        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X11 term from forced photometry.</DESCRIPTION>
    395418      </FIELD>
    396419      <FIELD name="lensObjShearX12" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    397         <DESCRIPTION>per-object shear polarizability X12 term</DESCRIPTION>
     420        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X12 term from forced photometry.</DESCRIPTION>
    398421      </FIELD>
    399422      <FIELD name="lensObjShearX22" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    400         <DESCRIPTION>per-object shear polarizability X22 term</DESCRIPTION>
     423        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X22 term from forced photometry.</DESCRIPTION>
    401424      </FIELD>
    402425      <FIELD name="lensObjShearE1" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    403         <DESCRIPTION>per-object shear polarizability E1 term</DESCRIPTION>
     426        <DESCRIPTION>Kaiser et al. (1995) equation (B12) shear polarizability e1 term from forced photometry.</DESCRIPTION>
    404427      </FIELD>
    405428      <FIELD name="lensObjShearE2" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    406         <DESCRIPTION>per-object shear polarizability E2 term</DESCRIPTION>
     429        <DESCRIPTION>Kaiser et al. (1995) equation (B12) shear polarizability e2 term from forced photometry.</DESCRIPTION>
    407430      </FIELD>
    408431      <FIELD name="lensPSFSmearX11" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    409         <DESCRIPTION>psf model smear polarizability X11 term</DESCRIPTION>
     432        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X11 term from PSF model for forced photometry.</DESCRIPTION>
    410433      </FIELD>
    411434      <FIELD name="lensPSFSmearX12" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    412         <DESCRIPTION>psf model smear polarizability X12 term</DESCRIPTION>
     435        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X12 term from PSF model for forced photometry.</DESCRIPTION>
    413436      </FIELD>
    414437      <FIELD name="lensPSFSmearX22" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    415         <DESCRIPTION>psf model smear polarizability X22 term</DESCRIPTION>
     438        <DESCRIPTION>Kaiser et al. (1995) equation (A11) smear polarizability X22 term from PSF model for forced photometry.</DESCRIPTION>
    416439      </FIELD>
    417440      <FIELD name="lensPSFSmearE1" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    418         <DESCRIPTION>psf model smear polarizability E1 term</DESCRIPTION>
     441        <DESCRIPTION>Kaiser et al. (1995) equation (A12) smear polarizability e1 term from PSF model for forced photometry.</DESCRIPTION>
    419442      </FIELD>
    420443      <FIELD name="lensPSFSmearE2" arraysize="1" datatype="float" unit="arcsec^-2" default="-999">
    421         <DESCRIPTION>psf model smear polarizability E2 term</DESCRIPTION>
     444        <DESCRIPTION>Kaiser et al. (1995) equation (A12) smear polarizability e2 term from PSF model for forced photometry.</DESCRIPTION>
    422445      </FIELD>
    423446      <FIELD name="lensPSFShearX11" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    424         <DESCRIPTION>psf model shear polarizability X11 term</DESCRIPTION>
     447        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X11 term from PSF model for forced photometry.</DESCRIPTION>
    425448      </FIELD>
    426449      <FIELD name="lensPSFShearX12" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    427         <DESCRIPTION>psf model shear polarizability X12 term</DESCRIPTION>
    428       </FIELD>
    429       <FIELD name="lensPSFShearX22" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    430         <DESCRIPTION>psf model shear polarizability X22 term</DESCRIPTION>
     450        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X12 term from PSF model for forced photometry.</DESCRIPTION>
     451      </FIELD>
     452      <FIELD name="lensPSFShearX22" arraysize="1" datatype="float" unit="dimensionless" default="-999">;
     453        <DESCRIPTION>Kaiser et al. (1995) equation (B11) shear polarizability X22 term from PSF model for forced photometry.</DESCRIPTION>
    431454      </FIELD>
    432455      <FIELD name="lensPSFShearE1" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    433         <DESCRIPTION>psf model shear polarizability E1 term</DESCRIPTION>
     456        <DESCRIPTION>Kaiser et al. (1995) equation (B12) shear polarizability e1 term from PSF model for forced photometry.</DESCRIPTION>
    434457      </FIELD>
    435458      <FIELD name="lensPSFShearE2" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    436         <DESCRIPTION>psf model shear polarizability E2 term</DESCRIPTION>
     459        <DESCRIPTION>Kaiser et al. (1995) equation (B12) shear polarizability e2 term from PSF model for forced photometry.</DESCRIPTION>
    437460      </FIELD>
    438461      <FIELD name="psfE1" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    439         <DESCRIPTION>psf model E1</DESCRIPTION>
     462        <DESCRIPTION>Kaiser et al. (1995) polarization parameter e1 = (Mxx - Myy) / (Mxx + Myy) from forced photometry.</DESCRIPTION>
    440463      </FIELD>
    441464      <FIELD name="psfE2" arraysize="1" datatype="float" unit="dimensionless" default="-999">
    442         <DESCRIPTION>psf model E2</DESCRIPTION>
     465        <DESCRIPTION>Kaiser et al. (1995) polarization parameter e2 =  (2 Mxy) / (Mxx + Myy) from forced photometry.</DESCRIPTION>
    443466      </FIELD>
    444467      <DATA>
    … …  
    447470    </TABLE>
    448471    <TABLE name="ForcedWarpToImage">
    449       <DESCRIPTION>VOTable description of PSPS table ForcedWarpToImage</DESCRIPTION>
     472      <DESCRIPTION>Contains the mapping of which input image comprises a particular warp image used for forced photometry.</DESCRIPTION>
    450473      <PARAM arraysize="1" datatype="char" ucd="meta.bib.author" name="Author" value="PSPS"></PARAM>
    451474      <FIELD name="forcedWarpID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    452         <DESCRIPTION>forced warp identifier</DESCRIPTION>
     475        <DESCRIPTION>Unique forced warp identifier.</DESCRIPTION>
    453476      </FIELD>
    454477      <FIELD name="imageID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
    455         <DESCRIPTION>hashed exposure-ccdID identifier</DESCRIPTION>
     478        <DESCRIPTION>Unique image identifier.  Constructed as (100 * frameID + ccdID).</DESCRIPTION>
    456479      </FIELD>
    457480      <DATA>
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