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IMAPS Field Descriptions
You may submit queries using any of the fields listed below. The "Column label" is the name displayed on the search forms and in search results. The "Column name" is the actual column name in the table and needs to be specified in GET requests. (See the MAST Services web page for information on submitting GET requests.) If the "Column name" is in italics, it means the table is indexed on that field and queries with that field will run faster. Clicking on "Data Type" entries will display information on search options. When using the "user-specified field" form element on a MAST search form, simply select the column "label" in the forms pulldown menu and type in the qualification in the adjacent box. If you specify constraints on the same column in more than one form element, they will all be included in the query and you may not get results you expect. Note the entries in the table below may be sorted by clicking on the column headings. Catalog Description of IMAPS TableLast Update:
| Column Name | Column Label | Description | Examples/Valid Values | Data Type |
|---|---|---|---|---|
| Column Name | Column Label | Description | Examples/Valid Values | Data Type |
| imaps_filename | File Name | File name specifying imaps1 or imaps2 and exposure sequence number from 79 to 721 | imap1_0079.fits | string |
| imaps_target_name | Target Name | Name of target | ZETA PUP | string |
| imaps_ra2000 | RA (J2000) | right ascension in J2000 in decimal degrees | ra | |
| imaps_dec2000 | Dec (J2000) | declination in J2000 in decimal degrees | dec | |
| imaps_obs_start_time | Obs Start Time | Starting time in GMT of first exposure for the given target | 1993-09-16 16:08:10 | datetime |
| imaps_category | Category | The object category based on the IUE classification system, described by a number from 1 to 99. | 26 | integer |
| imaps_hd_num | HD Number | The Henry Draper catalog number. | 10144 | integer |
| imaps_seq_num | Sequence Number | The Exposure sequence number (from 79 to 721) describing the order in which targets were originally observed. | 79 - 721 | integer |
| imaps_echelle_pos | Echelle Pos | Position of Echelle grating (a number from 1 to 4) or whether a background exposure (B) was obtained. Each grating position covers 1/4 of each echelle order, so four exposures are needed to cover entire echelle spectrum. | 1-4, B | string |
| imaps_exp_time | Exp Time | Total exposure time | 34.067 or 17 | float |
| imaps_x_offset | X offset | exposure offset in x direction | integer | |
| imaps_y_offset | Y offset | exposure offset in y direction | integer | |
| imaps_glong | Galactic Long. | galactic longitude in decimal degrees | float | |
| imaps_glat | Galactic Lat. | galactic latitude in decimal degrees | float | |
| imaps_elong | Ecliptic Long. | ecliptic longitude in decimal degrees | float | |
| imaps_elat | Ecliptic Lat. | ecliptic latitude in decimal degrees | float | |
| imaps_data_id | Data ID | File ID (same as file name). | IMAPS1_0107 | string |
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