COADD 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 COADD Table
Last Update: December 13, 2010

Column Name	Column Label	Description	Examples/Valid Values	Data Type
Column Name	Column Label	Description	Examples/Valid Values	Data Type
coa_detector	Detector	U1 detector covers the 710-1500 A range at 0.05 A resolution U2 covers 750-1645 A at 0.2 A resolution	U1, U2	string
coa_filename	Filename	Assigned file name.	Examples: C535-018.UU1, C535-010.BU1, C551-001.U2	string
coa_object_name	Target Name	Name of target (upper case)	Examples: M15, 31 PEG, GAMMA CAS	string
coa_ra2000	RA (J2000)	Right Ascension (specify in decimal degrees)	Range: 0 to 360 deg	ra
coa_dec2000	Dec (J2000)	For user specified search, must be decimal degrees.	Decimal Degrees Range -90 to +90 deg	dec
coa_npts	Points	Number of data points in coadded scan		integer
coa_nscans	Scans	Number of scans coadded	Range 1 to 297	integer
coa_startdt	Start Date	Start of observation	Range: Aug 27, 1972 to February 15, 1981	float
coa_minw	Min Wavelength (A)	Minimum wavelength in coadded scans	Range: 711.37 to 2357.75	float
coa_maxw	Max Wavelength (A)	Minimum wavelength in coadded scans	Range: 711.75 to 2357.82	float
coa_sscan	start scan	Number of first scan	Range: 1 to 20231	integer
coa_escan	end scan	Number of last scan	Range: 1 to 20436	integer
coa_obj_class	Object Class	Object classification based on IUE Classification System	Range: 1 to 83	integer