Changes between Version 15 and Version 16 of VYSOS5.20090806

Timestamp:

Aug 20, 2009, 6:07:15 PM (17 years ago)

Author:

eugene

Comment:

--

VYSOS5.20090806

@@ -97 +97 @@
 === Side note on astrometry ===
 
- * we were having trouble with astrometry in May.  I've been looking into this a bit more, and it looks like at least part of the problem is that the angle moves around a bit, and the solution is sensitive to angles of 1-2 degrees.  The file ippconfig/vysos5/psastro.config includes an option for searching over a range of angles (PSASTRO.GRID.MIN.ANGLE, PSASTRO.GRID.MAX.ANGLE, PSASTRO.GRID.DEL.ANGLE).  I've set this to -10 to +10 in steps of 1 degree.  This may not be enough range in some cases.  
+ * we were having trouble with astrometry in May.  I've been looking into this a bit more, and it looks like at least part of the problem is that the angle moves around a bit, and the solution is sensitive to angles of 1-2 degrees.  The file ippconfig/vysos5/psastro.config includes an option for searching over a range of angles (PSASTRO.GRID.MIN.ANGLE, PSASTRO.GRID.MAX.ANGLE, PSASTRO.GRID.DEL.ANGLE).  I've set this to -20 to +20 in steps of 1 degree.  This may not be enough range in some cases.  
 
  * it turned out that the FLIPPED images are also flipped relative to the astrometry model.  I addressed this by setting FPA.POSANGLE to 180 for the flipped configuration.