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Changes between Version 11 and Version 12 of fullforce_SAStest1


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Timestamp:
Jan 31, 2014, 12:19:30 PM (12 years ago)
Author:
bills
Comment:

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  • fullforce_SAStest1

    v11 v12  
    4848
    4949The psphotStack code is essentially the same as that used for SAS_32 except that the selection of objects for extended model
    50  fitting was relaxed. In particular
    51 the previous requirement that the object be "extended" (EXTNSIGMA > 3) is not applied. Instead magnitude cuts were used.
     50fitting was relaxed. In particular the previous requirement that the object be "extended" (EXTNSIGMA > 3)
     51was not applied. Instead magnitude cuts were used.
    5252The cuts chosen were 21.5 in g, r, and i. 20.5 in z and 19.5 in y band.  Note that these cuts are per object.
    53 If the object's magnitude was less
    54 than the cut for any band, fits were performed in all bands. Also extended model fits will not be performed in the
     53Fits were performed in all bands if the object's magnitude was less than the limit for '''any''' band.
     54Also extended model fits will not be performed in the
    5555region within 20 degrees latitude of the galactic plane with the limit increasing to 35 degrees near the galactic center.
    56 This cuts have no effect in the SAS region.
     56This cut has no effect in the SAS region.
    5757
    5858During the skycal processing a new data product is produced. The "cff file".
    … …  
    6262The model type chosen is the best of the three models Exponential (exp), de Vaucouleurs (dev), or sersic (ser).
    6363
    64 The inputs to each "full force run" are the cff file (one per skycell per filter) and the set of individual warp
     64The inputs to each "full force run" are the cff file (one per skycell per filter) and the individual warp
    6565images for each skycell. In this data set there were
    66 on average 11 warps per skycell. Not that all warps are used regardless of whether they were rejected during stack
    67 construction.
     66on average 11 warps per skycell. Note that all warps are used regardless of whether they were rejected
     67when building the stacks.
    6868
    69 The full force processing consists of two parts. Running psphotFullForce on the individual warps followed by psphotFullForceSummary to generate the
     69The full force processing consists of two parts. The program psphotFullForce is run on the individual warps
     70and then psphotFullForceSummary takes the results for each skycell and generatse the
    7071final extended source measurement for each source. See [wiki:fullforce_algorithms] for details on the measurements and calculations.
    7172