THE MIKULSKI ARCHIVE FOR SPACE TELESCOPES (MAST)
All Kepler data is obtained via the MAST. All archival users must
register with MAST to
download data. In addition GOs must email MAST at firstname.lastname@example.org and request that their program number be registered and coupled with your MAST username.
This administration will typically take <24h, but we recommend GOs apply before their data becomes available.
KEPLER DATA SEARCH AND RETRIEVAL FORM
To obtain Kepler light curves, access the the Data Retrieval Search and Retrieval
can also be found under the "Search & Retrieval" pull-down menu on the main Kepler page.
At right the blank Data Search page is displayed. Users can select targets using a variety of
parameters, including coordinates, Kepler ID, Kep_mag, effective temperature and log g.
Additional user-specified fields can be selected from the pull-down menus located in the
middle of the page.
Users can mine the archived data by providing search criteria:
- Individual values, e.g., a Kepler ID number - 2300399
- Values defined by a limiting criterion, e.g., " < 12.5" (in the Kep Mag field)
- Values within a specified parameter range,
e.g., "5000 .. 6000" (in the Teff field)
Note the double period ".." used by MAST to indicate values between two limits.
Additional information on the definitions of search parameters, and the search syntax
are provided on the Search form
reached via the "help" button at the upper right.
MAST provides two mechanisms for search parameter input: directly entering values into the
dialog boxes, using the standard form (default), and an option to
upload a list of search value from the user's computer, via the file upload
form. This file can contain a list of search values, one per line, which will be executed
sequentially. When using the file upload form, users need to be sure to enter the correct
search parameter from the drag-down options next to the "File Contents" field - coordinates, target names or Kep IDs; coordinates are the default.
The easist method for Guest Observers to locate all of their data is to search using the
Investigation ID parameter. GO programs investigation IDs are defined
as: GOn####, where n = the cycle, and #### is the unique number for an approved program. For
example the GO Office target set for Cycle 1 is coded as GO10000. GOs can identify their Investigation IDs on the programs summary page.
Guest Observers could also access all their data by e.g. creating a text file with the KepIDs or celestial coordinates of their targets, then use the file upload option and be sure to indicate under "File Contents"
the correct field to search over.
MAST produces a standard search output containing the parameters listed in the white, left-hand dialog box
in the lower half of the page.
User's may remove or rearrange the output using the button to the right of the box, and add
additional parameters from the drop-down menu just below.
Below is an example of a MAST search output, containing the default parameter listing.
The object is a K-giant observed during Q0; the data was released as part of the initial
"dropped targets" sample.
The distinction between public and proprietary data is indicated in the first column, labeled "Mark"
with a checkbox below. Proprietary data is flagged with a yellow color, public data will be
MAST provides a quick-look at the time series, by clicking on a source in the "Mark" checkbox,
and then clicking the "Plot marked spectra" box.
Once the user is certain that they have selected the desired object(s), click the "Mark" checkbox to
proceed with downloading the data.