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Target Section

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This is the top right panel of the PIT, when "Targets" is selected from the "Observations / Band 3 / Targets" options shown below the panel. The target list may be sorted by clicking on any of the column names in the table. Note that for large/long program proposals only the targets for the first semester have to be entered into the PIT when the proposal is initially submitted.

New PIT Targets tab

Entering targets individually:

(1) Entering the  target name in the "Lookup:" box at the bottom of the window and pressing Return will cause the PIT to do a name query of the catalogs (SIMBAD, NED or HORIZONS) chosen from the toolbar.  If the object is found then the coordinates and magnitudes will be downloaded and displayed. This is the easiest and preferred way of entering individual targets.

(2) Pressing the "+" button at the bottom of the window will bring up the Edit Target window (see below). You can either enter its name and click "Lookup..." and have the software lookup the coordinates and brightness via the seleted catalogs, or you can enter the coordinates, proper motions (if significant), and brightness manually. The catalog selections for the automatic lookup can be changed by clicking the "Catalogs..." button from the toolbar.

PIT Edit Target popup PIT target brightness tab 

Target brightnesses for sidereal targets are entered by selecting the "Magnitudes" tab (above right).  Select the bandpass and then enter the brightness and the system. The default system is Vega magnitudes, the other options are AB magnitudes and Janskys. 

Coordinates for non-sidereal targets are entered in an ephemeris. Selecting "Non-Sidereal" from the Type options reveals an ephemeris table with columns for RA, Dec, UTC, and magnitude. Entering a target name and either pressing the 'Return' key or the 'Lookup' button will initiate an ephemeris query from the NASA/JPL Horizons service. First, you must select the Horizons target type (Comet, Asteroid, or Major Body) as in the Observing Tool (below, left). If the object is found in the database then the ephemeris is downloaded and placed in the table (below, right) .

Selecting a PIT non-sidereal target type  PIT non-sidereal target ephemeris

Add a new ephemeris entry by clicking on the green "+". Delete an entry by selecting it and then clicking on the red "X". Double click on a line in the table to edit the UT date, RA, Dec, and magnitude (below). For manual entry we recommend using 0hr UT on the date entered. A non-sidereal target input file (see below) can be used to enter arbitrary UTC times

Editing a PIT ephemeris element

For target of opportunity (ToO) proposals, enter dummy targets by selecting "Target of Opportunity" from the Type menu. These targets do not have coordinates or brightnesses.

Setting a ToO target type

Importing a target list:

Click the "Import targets..." button in the lower-right corner of the Target panel or select "Import targets" from the File menu. Select the file to load. The software will check to make sure the file is one of the acceptable formats and will warn you if it is not. Acceptable formats are CSV (comma-separated), FITS table, VO table, and tst (tab-separated).

Selecting a target file for import.

Click "Next" to review the list of targets found in the file,

Targets read from a file.

and then "Finish" to load the objects into the target list.

For sidereal targets the required columns are: Name, RAJ2000, and DecJ2000. Optional columns include proper motion (pmRA, pmDec), and the brightness with photometric system (for example V, V_sys and K, K_sys).

For non-sidereal targets the required columns are: ID, Name, UTC, RAJ2000, and DecJ2000. The target brightness is optional. A single non-sidereal target in a Horizons ephemeris file can also be entered.

See the examples of sidereal and non-sidereal target import files for more more options.

Saving a target list:

Click the "Export targets..." button in the lower-right corner of this pane or select "Export targets" from the File menu. A popup of export preferences then appears. If the target list includes a mixture of sidereal and non-sidereal targets, then select which kind to export. Also, select the export format (csv, FITS table, tst, VO table) and click OK. Then select the directory, enter a file name and click Save.


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