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Changes between Version 12 and Version 13 of pgc55


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Timestamp:
Apr 27, 2016, 3:57:37 PM (10 years ago)
Author:
ehsan
Comment:

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  • pgc55

    v12 v13  
    125125----
    126126
    127  * left :  factor = 2.0  i.e. expand by 100%
    128  * right:  factor = 1.5  i.e. expand by  50% (original)
     127 * left-top :  factor = 2.0  i.e. expand by 100%
     128 * right-bottom:  factor = 1.5  i.e. expand by  50% (original)
    129129
    130130[[Image(pgc55_sdss_profile_factor2.jpg)]]  [[Image(pgc55_sdss_profile.jpg)]]
     
    135135Knowing the fact that estimated error for the background level is <~5%:
    136136
    137  * left: Adding 1% to the estimated sky value
     137 * left-top: Adding 1% to the estimated sky value
    138138{{{
    139139IDL code: sdss_radprof.pro
     
    141141}}}
    142142
    143  * right: original
     143 * right-bottom: original
    144144
    145145[[Image(pgc55_sdss_profile_sky1percent.jpg)]]  [[Image(pgc55_sdss_profile.jpg)]]
     
    148148
    149149Final conclusion up to this point (for pgc55): If the profile looks good, we can claim that we've got to the precession of 5% in magnitude (e.g. 0.05 mag).
     150Slightly changing the position angle (7 degrees) and axial ratio does not change 0.05 mag precession.
    150151
    151152