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        Photometric conversion factors for Phase 3 data

                                                     Aug. 24, 2009
Dear AKARI/IRC users,

The following table summaries the preliminary conversion factors
for phase 3 observations until March 2009 derived from observations
of standard stars.  Note that the ratio of the conversion factors
between the long and short exposures is not the one expected
from the exposure time.  The reason is not known at present.
The conversion factors are given in units of ADU/exposure to Jy
(same as in the IDUM).

        CF (short exposure)      CF (long exposure)
       short   %error  Nstar    long    %error  Nstar  
 N2  5.499e-06  1.845   16    6.600e-07  2.158   13 
 N3  3.885e-06  1.960   18    4.947e-07  2.367   11 
 N4  2.776e-06  2.125   16    3.615e-07  2.279   13 
 
Sincerely yours,
IRC team
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