Changeset 38808 for trunk/ippToPsps/config/tables.P2.vot

Timestamp:

Oct 7, 2015, 11:33:06 AM (11 years ago)

Author:

eugene

Message:

moments set to arcsec-based units instead of pixels; definitions of M3 and M4 moments fixed

File:

• trunk/ippToPsps/config/tables.P2.vot (modified) (2 diffs)

trunk/ippToPsps/config/tables.P2.vot

@@ -217 +217 @@
         <DESCRIPTION>PSF major axis orientation at image center.</DESCRIPTION>
       </FIELD>
-      <FIELD name="momentMajor" arraysize="1" datatype="float" unit="raw pixels" default="-999">
+      <FIELD name="momentMajor" arraysize="1" datatype="float" unit="arcsec" default="-999">
         <DESCRIPTION>PSF major axis second moment.</DESCRIPTION>
       </FIELD>
-      <FIELD name="momentMinor" arraysize="1" datatype="float" unit="raw pixels" default="-999">
+      <FIELD name="momentMinor" arraysize="1" datatype="float" unit="arcsec" default="-999">
         <DESCRIPTION>PSF minor axis second moment.</DESCRIPTION>
       </FIELD>
-      <FIELD name="momentM2C" arraysize="1" datatype="float" unit="raw pixels^2" default="-999">
+      <FIELD name="momentM2C" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
         <DESCRIPTION>Moment M2C = M_xx - M_yy.</DESCRIPTION>
       </FIELD>
-      <FIELD name="momentM2S" arraysize="1" datatype="float" unit="raw pixels^2" default="-999">
+      <FIELD name="momentM2S" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
         <DESCRIPTION>Moment M2S = 2 * M_xy.</DESCRIPTION>
       </FIELD>
-      <FIELD name="momentM3" arraysize="1" datatype="float" unit="raw pixels^3" default="-999">
-        <DESCRIPTION>Moment M3 = sqrt( (M_xxx - 3 * M_xyy)^2 + (3 * M_xxy - M_yyy)^2 ).</DESCRIPTION>
-      </FIELD>
-      <FIELD name="momentM4" arraysize="1" datatype="float" unit="raw pixels^4" default="-999">
-        <DESCRIPTION>Moment M4 = sqrt( (M_xxxx - 6 * M_xxyy + M_yyyy)^2 + (4 * M_xxxy - 4 * M_xyyy)^2 ).</DESCRIPTION>
+      <FIELD name="momentM3" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
+        <DESCRIPTION>trefoil second moment = sqrt( (M_xxx - 3 * M_xyy)^2 + (3 * M_xxy - M_yyy)^2 ).</DESCRIPTION>
+      </FIELD>
+      <FIELD name="momentM4" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
+        <DESCRIPTION>quadrupole second moment = sqrt( (M_xxxx - 6 * M_xxyy + M_yyyy)^2 + (4 * M_xxxy - 4 * M_xyyy)^2 ).</DESCRIPTION>
       </FIELD>
       <FIELD name="apResid" arraysize="1" datatype="float" unit="magnitudes" default="-999">
@@ -489 +489 @@
       </FIELD>
       <FIELD name="momentM3C" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
-        <DESCRIPTION>Moment M3C = M_xxx - 3 * M_xyy.</DESCRIPTION>
+        <DESCRIPTION>cosine of trefoil second moment term: r^2 cos(3 theta) = M_xxx - 3 * M_xyy.</DESCRIPTION>
       </FIELD>
       <FIELD name="momentM3S" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
-        <DESCRIPTION>Moment M3S = 3 * M_xxy - M_yyy.</DESCRIPTION>
+        <DESCRIPTION>sine of trefoil second moment: r^2 sin (3 theta) = 3 * M_xxy - M_yyy.</DESCRIPTION>
       </FIELD>
       <FIELD name="momentM4C" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
-        <DESCRIPTION>Moment M4C = M_xxxx - 6 * M_xxyy + M_yyyy.</DESCRIPTION>
+        <DESCRIPTION>cosine of quadrupole second moment: r^2 cos (4 theta) = M_xxxx - 6 * M_xxyy + M_yyyy.</DESCRIPTION>
       </FIELD>
       <FIELD name="momentM4S" arraysize="1" datatype="float" unit="arcsec^2" default="-999">
-        <DESCRIPTION>Moment M4S = 4 * M_xxxy - 4 * M_xyyy.</DESCRIPTION>
+        <DESCRIPTION>sine of quadrupole second moment: r^2 sin (4 theta) = 4 * M_xxxy - 4 * M_xyyy.</DESCRIPTION>
       </FIELD>
       <FIELD name="apFlux" arraysize="1" datatype="float" unit="Janskys" default="-999">