diff --git a/glas/glas.pov b/glas/glas.pov
index 4b0e1e0..4f0dce0 100644
--- a/glas/glas.pov
+++ b/glas/glas.pov
@@ -17,17 +17,21 @@
 	    }
 	    //texture {T_Glass3 }
 	    texture {T_Old_Glass }
-	    interior { ior 1.5 }
+	    interior {
+		ior 1.5
+		caustics 1.0
+	    }
 
 	}
 	cylinder {
 	    <0, 1, 0> <0, 10, 0>, 2.8
 	    texture {
 		pigment {
-		    rgbf <1, 0.5, 0.7, 0.0>
+		    rgbf <1, 1.0, 1.0, 0.0>
 		}
 		finish {
 		    reflection 0.3
+		    caustics 1.0
 		}
 	    }
 	    interior {
diff --git a/glas/test-glas.pov b/glas/test-glas.pov
index cf1d2b6..06321e0 100644
--- a/glas/test-glas.pov
+++ b/glas/test-glas.pov
@@ -18,7 +18,7 @@ light_source {
 
 #ifdef (Camera_Frosch)
 camera {
-        location <40, 2, 0>
+        location <0, 2, 40>
         look_at <0, 8, 0>
 	angle 40
 }
@@ -41,7 +41,7 @@ camera {
 
 #ifdef (Camera_Totale)
 camera {
-        location <40, 30, 20>
+        location <20, 30, -40>
         look_at <0, 10, 0>
 	angle 40
 
diff --git a/pr/thermostrahler/povray.ini b/pr/thermostrahler/povray.ini
index 3124195..a005003 100644
--- a/pr/thermostrahler/povray.ini
+++ b/pr/thermostrahler/povray.ini
@@ -2,7 +2,7 @@
 +AM2
 +QR
 +HTP
-+w320 +h240
++w1024 +h768
 display_gamma = 2.2
 +D
 +FN
diff --git a/pr/thermostrahler/test-se.pov b/pr/thermostrahler/test-se.pov
index 46c5397..e6ecadc 100644
--- a/pr/thermostrahler/test-se.pov
+++ b/pr/thermostrahler/test-se.pov
@@ -1,74 +1,29 @@
 #include "colors.inc"
-#include "shapes.inc"
-#include "textures.inc"
-#include "metals.inc"
-#include "stones.inc"
 
 global_settings {
         assumed_gamma 1.0
-        ambient_light rgb<0, 0, 0>
-	radiosity {}
 }
 
+
 light_source {
-    <2000, 2000, 2000>
+    <2000, 2000, -2000>
     color White
 }
 
-light_source {
-    <-2000, 2000, -2000>
-    color rgb <0.8, 0.8, 1>
-}
-
 camera {
-        location <0.9, 0, -0>
-        look_at <.60, 0, 0>
-	angle 20
+        location <90, 0.000000, 0.00000>
+        look_at <0, 0, 0>
+	angle 10
 	orthographic
 }
 
-#declare cm=0.01;
-
-	union {
-	    intersection {
-		superellipsoid {
-		    <0.25, 0.25>
-		    scale <2.5, 1, 3>
-		}
-		cylinder {
-		    <-2.5, 0, 0> <2.5, 0, 0> 3.2
-		}
-		rotate <30, 0, 0>
-		translate <60.0, 0, 0>
-		pigment {
-		    checker color Yellow, color Red
-		    scale 10
-		}
-	    }
-	    difference {
-		cylinder {
-		    <0.1, 0, 0> <65, 0, 0> 3
-		    pigment { color Blue }
-		}
-		cylinder {
-		    <0, 0, 0> <65.1, 0, 0> 3-0.1
-		    pigment { color Blue }
-		}
-	    }
-	    difference {
-		cylinder {
-		    <0.1, 0, 0> <65, 0, 0> 2
-		    pigment { color Blue }
-		}
-		cylinder {
-		    <0, 0, 0> <65.1, 0, 0> 2-0.1
-		    pigment { color Blue }
-		}
-	    }
-
-
-	    scale cm
-
-	}
+superellipsoid {
+    <0.25, 0.25>
+    scale <2.5, 1, 3>
+    pigment {
+	checker color Yellow, color Red
+	scale 10
+    }
+}
 
 background { color rgb<0.2, 0.4, 0.8>  }
diff --git a/tests/GNUmakefile b/tests/GNUmakefile
index 9f2d332..cd6a826 100644
--- a/tests/GNUmakefile
+++ b/tests/GNUmakefile
@@ -4,6 +4,9 @@ include GNUmakevars
 
 all: \
 	rotate.png \
+	rad.png \
+	rad2.png \
+	rad3.png \
 
 
 %.ppm: %.pov