Changeset 39706 for branches/czw_branch/20160809/psastro/src/psastroModelAdjust.c

Timestamp:

Sep 20, 2016, 1:32:59 PM (10 years ago)

Author:

eugene

Message:

change the sign

File:

• branches/czw_branch/20160809/psastro/src/psastroModelAdjust.c (modified) (2 diffs)

branches/czw_branch/20160809/psastro/src/psastroModelAdjust.c

@@ -91 +91 @@
 
     // get the current posangle of the ref chip
-    float chipAngle = atan2 (refChip->toFPA->y->coeff[1][0], refChip->toFPA->x->coeff[1][0]);
+    // this should have a negative sign : chipAngle = -atan2 (dM/dy, dM/dx)
+    float chipAngle = -atan2 (refChip->toFPA->y->coeff[1][0], refChip->toFPA->x->coeff[1][0]);
 
     // chipAngle should be refChipAngleNominal @ POSANGLE = 0.0
@@ -110 +111 @@
         psRegion *region = pmChipPixels (chip);
 
+        // this should ALSO have a negative sign: this rotates by +posAngleOffset
         psPlaneTransform *toFPA = psPlaneTransformRotate (NULL, chip->toFPA, posAngleOffset);
         psFree (chip->toFPA);