MACHO Project: No Frills Lightcurve Selection Help

Index

1.0 Lightcurve Retrieval
2.0 Query Input
2.1 Field
2.2 Tile
2.3 Seqn
3.0 Navigation
3.1 Form Reset
3.2 Form Submission

1.0 Lightcurve Retrieval

Lightcurve retrieval is a 2 step process. First the user specifies the desired lightcurves using the input form. Then, on display of the lightcurve pick-list, the user selects either

  • lightcurve graphical display (view); or
  • inclusion of the lightcurve's data for eventual ftp retrieval (bundle).

    The lightcurve pick-list is fabricated directly from the user input. No auxiliary database is accessed, thus no additional summary information regarding the selected lightcurves is available until the actual lightcurve is acquired as a result of either view or bundle.

    2.0 Query Input

    2.1 Field.Tile.Seqn

    The Field.Tile.Seqn triplet (also known as F.T.S) uniquely identifies a star within the context of the Macho Project databases. It is composed of atomic identifiers describing

  • the Field whose observation captured the star's data;
  • the Tile in which the star was found; and
  • finally, the sequence number of the star within the set of stars found in that Tile.

    Each atomic identifier is an integer number.

    The syntax for F.T.S stars within the F.T.S input list is: field . tile . sequence .

  • Multiple stars should be separated by commas.
  • Each star must be explicitly and fully stated. Wildcards and range specifications are not allowed.
  • Example: 2.4662.12, 1.3441.15, 1.3441.25

    The components comprising the F.T.S subfields are defined below.

    2.1.1 Field

    Macho Project Field identifier for the region of the sky containing the desired star. A Field's region may overlap other Fields' regions. Refer here for Macho Field locations.

  • Format is numeric.
  • Example: 10, 15,

    2.1.2 Tile

    Macho Project Tile identifier for the region of the sky containing the desired star. Tiles are non-overlapping and are uniquely numbered over the entire sky in constrast to Fields which are composed of multiple Tiles and may overlap other Fields' regions.

  • Format is numeric.
  • Example: 3000 , 5678

    2.1.3 Sequence

    Macho Project identifier for a specific star within a Tile. The number was assigned during the creation of a Field's master SodoPhot template. The same template was used during photometry reduction of all of that Field's observations.

  • Format is numeric.
  • Example: 2543, 100

    3.0 Navigation

    3.1 Form Reset

    Select the Reset button to return the form to default values.

    3.2 Form Submission

    Select the Submit button to initiate input field validation and the subsequent creation of the database search expression.

    Acknowledgement to use when referencing MACHO Project data

    "This paper utilizes public domain data originally obtained by the MACHO Project, whose work was performed under the joint auspices of the U.S. Department of Energy, National Nuclear Security Administration by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48, the National Science Foundation through the Center for Particle Astrophysics of the University of California under cooperative agreement AST-8809616, and the Mount Stromlo and Siding Spring Observatory, part of the Australian National University."

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