Pointing accuracy of the DR21M/IRAS20126 data taken 
in the 2006 July run 
__________________________________

- Pointing accuracy of DR21M/IRAS20126 data taken 
 in the July 2006 run :
  To see the pointing accuracy, data taken only 
toward the center position were taken into 
account this time.   Larry's 2D Gaussian fit 
program on IDL was used to derive the pointing 
offsets here.  Note that, since the pointing wasn't 
adjusted actively during the run most of the time, 
rms written below is the rms from the average 
values on each day with the same fazo/fzao offset  
values.  As shown below, pointing seemed to be  
pretty good and stable while these data were taken, 
within 3 arcseconds in both cazo/czao axes.

DR21M
-----------------------------------------------------
date        # of data  cazo_rms(")     czao_rms(")
-----------------------------------------------------
2006-07-16  3          0.798           0.634 
2006-07-17  4          0.671           2.07 
2006-07-18  4          2.40            3.00
2006-07-19  4          1.94            2.20
2006-07-20  5          3.44            3.44 

all        20          2.25            2.57
-----------------------------------------------------


I20126
-----------------------------------------------------
date        # of data  cazo_rms(")     czao_rms(")
-----------------------------------------------------
2006-07-16  4          1.13            1.302	
2006-07-17  3          0.477           0.710
2006-07-18  8          3.79            3.60 
2006-07-19  4          1.95            2.23  
2006-07-20  4          0.603           2.00

all        26          2.87            2.95 
-----------------------------------------------------

- Attached figures 
DR21M... 
samplefit_dr21m_33533-33536.gif 
cazo_num_dr21m_cnt.gif 
czao_num_dr21m_cnt.gif
dr21mcnt_cazofrmavr_za.gif
dr21mcnt_czaofrmavr_za.gif

I20126...
samplefit_i20126_33577-33580.gif
cazo_num_i20126_cnt.gif
czao_num_i20126_cnt.gif
i20126_czaofrmavr_za.gif
i20126_cazofrmavr_za.gif

- Additional files: 
 * pointing offsets for DR21M 
   (caution: all data included.  However, because 
   some of the data don't have the peak in the 
   image frame, offsets for those  
   data would be probably incorrect.)
 * pointing offsets for I20126 (all data included.)