Changes between Version 50 and Version 51 of Sa10Problems

Timestamp:

Dec 13, 2012, 9:28:42 AM (14 years ago)

Author:

eugene

Comment:

--

Sa10Problems

@@ -77 +77 @@
      *  a. we don't set it (should we? )
     * 4. x/yposerr: -999 to 17k while x/ypos 10 to 6.3k
-     *  a. '''Gene to investigate'''
+     *  a. '''EAM : x & y position error are actually based on the fwhmMajor and fwhmMinor values and the S/N: x = fwhmMajor / (S/N * 2.35), y = fwhmMinor / (S/N * 2.35).  these are reasonable (but note the angle compared to the x,y axis), but go to interesting values for very low S/N objects or those with negative fluxes.  perhaps it should saturate at 0.5*ap_radius_raw?'''
     * 5. raerr & decerr: quantized in 0.25 steps + in silly units  (not the same as xposerr)+ negative from time to time (not just -999)  + range is huge (-8000 to 8000)
       * a. '''gene to investigate - note that ra/dec err are in units of arcsecond '''