Changes between Version 9 and Version 10 of DC3bDataProducts


Ignore:
Timestamp:
10/09/2009 02:49:08 AM (10 years ago)
Author:
ktl
Comment:

Add measurements on per-filter deep co-adds. Clarify that all objects get FaintDiaSources?.

Legend:

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  • DC3bDataProducts

    v9 v10  
    3434 * These will be associated with Objects or used to create new Objects by Object Merge/Association. 
    3535 
    36 S5. Forced photometry measurements on single-CCD difference images using the positions/shapes from Deep Detection (O1). [wiki:DC3bDataProducts#DiaSource DiaSource] and/or [wiki:DC3bDataProducts#FaintDiaSource FaintDiaSource] 
     36S5. Forced photometry measurements on single-CCD difference images using (all of) the positions/shapes from Deep Detection (O2). [wiki:DC3bDataProducts#DiaSource DiaSource] and/or [wiki:DC3bDataProducts#FaintDiaSource FaintDiaSource] 
    3737 * 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. 
    38  * '''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).'' 
    3938 * '''Won't we also need to do forced photometry at orbit positions calculated by MOPS for !MovingObjects?''' [RHL] ''Probably; this is related to my comment on S4'' 
    4039 
     
    4544== Object-like measurements == 
    4645 
    47 O1. Measurements of detections on the panchromatic deep chi-square co-add.  [wiki:DC3bDataProducts#Detection Detection] 
     46O1. Detections on the panchromatic deep chi-square co-add. 
    4847 * These are only above a detection S/N threshold. 
    4948 * These are produced by Deep Detection. 
     49 * These may only be Footprints or positions with some shape information. 
     50 
     51O2. Measurements of detections (O1) on each of the per-filter deep co-adds. [wiki:DC3bDataProducts#Detection Detection] 
     52 * These may be produced by Deep Detection or by Multifit Measurement itself. 
     53 * These will eventually need to be de-blended. 
    5054 * These are used by Multifit Measurement as the initial conditions for fitting. 
    51  * [RHL] ''I'm not sure that this is what I'd call a `Detection` '' 
    52  
    53 O2. Model parameters based on stacks of postage stamps for all detections in O1. 
     55 
     56O3. Model parameters based on stacks of postage stamps for all detections in O1. 
    5457 * These are produced by Multifit Measurement. 
    5558 * These are used by Forced Photometry. 
    5659 
    57 O3. Astrometric models for all astronomical objects measured sufficient numbers of times in Single Frame Measurement (S2). 
     60O4. Astrometric models for all astronomical objects measured sufficient numbers of times in Single Frame Measurement (S2). 
    5861 * These are produced by Astrometric Calibration. 
    5962 * These are used by Multifit Measurement. 
    6063 
    61 O4. Moving object models (i.e. orbits).  [!MovingObject] 
     64O5. Moving object models (i.e. orbits).  [!MovingObject] 
    6265 * These are produced by MOPS. 
    6366 
    64 O5. Combinations of O1-4 with averages or other summaries of measurements from S1-5.  [wiki:DC3bDataProducts#Object Object] 
     67O6. Combinations of O1-5 with averages or other summaries of measurements from S1-5.  [wiki:DC3bDataProducts#Object Object] 
    6568 * These are produced by Object Merge/Association. 
    6669 
    67 O6) O5 with additional per-Object photometric calibration information. 
     70O7. O6 with additional per-Object photometric calibration information. 
    6871 * These are produced by Photometric Calibration. 
    6972