Changes between Version 5 and Version 6 of DC3bDataProducts


Ignore:
Timestamp:
10/08/2009 07:32:28 PM (10 years ago)
Author:
rhl
Comment:

Added initial links to possible schema

Legend:

Unmodified
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  • DC3bDataProducts

    v5 v6  
    77== Source-like measurements == 
    88 
    9 S1. Measurements of (quite) bright stars on single CCDs for PSF and WCS determination.  DC3bDataProducts#WcsSource 
     9S1. Measurements of (quite) bright stars on single CCDs for PSF and WCS determination.  [wiki:Dc3bDataProducts#WcsSource] 
    1010 * These are only stars. 
    1111 * These are produced internally to the Image Characterization Pipeline. 
    1212 * [RHL] ''We probably need to persist these too;  you always regret not being able to recover this sort of information.   It would be sufficient to just persist enough information to determine which stars were used, but probably not worth the trouble.'' 
    1313 
    14 S2. Measurements of astronomical objects over a given S/N threshold on single CCDs.  [Source] 
     14S2. Measurements of astronomical objects over a given S/N threshold on single CCDs.  [wiki:Dc3bDataProducts#Source] 
    1515 * [RHL] ''For DC3b, the S/N threshold will be 4.5 -- 5 sigma'' 
    1616 * These are produced by Single Frame Measurement. 
     
    1919 * These will be associated with Objects by Object Merge/Association. 
    2020 
    21 S3. Forced photometry measurements on single CCDs using the shapes from Multifit Measurement.  [Source and/or !FaintSource] 
     21S3. Forced photometry measurements on single CCDs using the shapes from Multifit Measurement.  [wiki:Dc3bDataProducts#Source] and/or [wiki:Dc3bDataProducts#FaintSource] 
    2222 * These include both stars and galaxies. 
    2323 * These may include measurements above ''and below'' the S/N threshold. The ones below the S/N threshold could perhaps have less information stored, or all of these could have less information stored.  The ones above the S/N threshold might need to be associated with and combined with the measurements in S2, but it is more likely that this association will be indirect through their corresponding Object. 
    2424 * These are produced by Forced Photometry. 
    2525 
    26 S4. Measurements on single-CCD difference images using the positions from Difference Detection.  [!DiaSource] 
     26S4. Measurements on single-CCD difference images using the positions from Difference Detection.  [wiki:Dc3bDataProducts#DiaSource] 
    2727 * These are only above a detection S/N threshold.  
    2828 * [RHL] ''Probably 5 sigma for DC3b.  If we need to recover low S/N detections of moving objects for MOPS I can imagine pressure for lower significance detections, which may or may not need to be kept forever (as we'll be doing forced photometry later anyway; S5)'' 
     
    3131 * These will be associated with Objects or used to create new Objects by Object Merge/Association. 
    3232 
    33 S5. Forced photometry measurements on single-CCD difference images using the positions/shapes from Deep Detection (O1).  [!DiaSource and/or !FaintDiaSource] 
     33S5. Forced photometry measurements on single-CCD difference images using the positions/shapes from Deep Detection (O1).  [wiki:Dc3bDataProducts#DiaSource] and/or [wiki:Dc3bDataProducts#FaintDiaSource] 
    3434 * These may include measurements above ''and below'' the S/N threshold. The ones below the S/N threshold could perhaps have less information stored, or all of these could have less information stored.  The ones above the S/N threshold might need to be associated with and combined with the measurements in S4, but it is more likely that this association will be indirect through their corresponding Object or !MovingObject. 
    3535 * '''Will all positions/shapes from Deep Detection be used or only a subset, and if a subset, how will that be determined?''' [RHL] ''I'd guess a PSF model, a galaxy model, and a galaxy model in a canonical band (maybe i).'' 
     
    4242== Object-like measurements == 
    4343 
    44 O1. Measurements of detections on the panchromatic deep chi-square co-add.  [Detection] 
     44O1. Measurements of detections on the panchromatic deep chi-square co-add.  [wiki:Dc3bDataProducts#Detection] 
    4545 * These are only above a detection S/N threshold. 
    4646 * These are produced by Deep Detection. 
     
    5959 * These are produced by MOPS. 
    6060 
    61 O5. Combinations of O1-4 with averages or other summaries of measurements from S1-5.  [Object] 
     61O5. Combinations of O1-4 with averages or other summaries of measurements from S1-5.  [wiki:Dc3bDataProducts#Object] 
    6262 * These are produced by Object Merge/Association. 
    6363 
     
    9999 
    100100 
    101 === WcsSource === 
     101== Possible Schema for Sources and Objects == 
     102 
     103=== !WcsSource === 
     104=== Source === 
     105=== !DiaSource === 
     106=== !FaintSource === 
     107=== !FaintDiaSource === 
     108 
     109=== Detection === 
     110=== Source === 
    102111 
    103112 For the class coming out of the deep measurement stage for DC3b (I can't