Index: /branches/eam_branches/ipp-20111122/Ohana/src/addstar/src/sky_tessalation.c
===================================================================
--- /branches/eam_branches/ipp-20111122/Ohana/src/addstar/src/sky_tessalation.c	(revision 33391)
+++ /branches/eam_branches/ipp-20111122/Ohana/src/addstar/src/sky_tessalation.c	(revision 33392)
@@ -546,5 +546,9 @@
 }
 
-// define the parameters of a single sky projection center
+// define the parameters of a projection centers for this ring 
+// dec : ~ center of ring in Dec
+// dDEC : approximate height
+// nring : number of cells generated for this ring
+// format : guide to generate the filenames (c-type string format)
 SkyRectangle *sky_rectangle_ring (float dec, float dDEC, int *nring, char *format) {