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HDU 2, ASCII Table
| Variable Type | Variable Name | Description |
| Integer | tfields=2 | "Table fields" The table will contains 2 columns. |
| Long | nrows=256 | "Number of Rows" Table will have 256 rows. |
| Char | extname[]="HTMLevel10Idx" | "Extension name" Name of the extention. |
| Char | *ttype[]={"Freq", "L10Pointer"}; | "Table Type" |
| Char | *tform[]={"I10","I10"}; | "Table Form" |
| Char | *tunit[]={" "," "}; | "Table Unit" |
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HDU 3, Export Binary Table Fields and Types
| Field | Type | Form | Unit |
| 1 | gscID2 | J | id |
| 2 | RightAsc | D | rad |
| 3 | Declination | D | rad |
| 4 | MeanEpoch | E | |
| 5 | RaEpsilon | E | rad |
| 6 | DecEpsilon | E | Rad |
| 7 | RaProperMotion** | E | mas/yr |
| 8 | DecProperMotion** | E | mas/yr |
| 9 | RaProperMotionErr** | E | |
| 10 | DecProperMotionErr** | E | |
| 11 | Fmag | E | mag |
| 12 | FmagErr | E | |
| 13 | Jmag | E | mag |
| 14 | JmagErr | E | |
| 15 | Vmag | E | mag |
| 16 | VmagErr | E | |
| 17 | Nmag | E | mag |
| 18 | NmagErr | E | |
| 19 | Classification | J | |
| 20 | SemiMajorAxis | E | pixels |
| 21 | Eccentricity | E | |
| 22 | Positionangle | E | deg |
| 23 | Source Status Flag | J |
** Available with release GSC2.3
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Classification Codes
| 0 | Star |
| 1 | Galaxy |
| 2 | Blend |
| 3 | Non-Star |
| 4 | Unclassified |
| 5 | Defect |
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Source Status Flag Codes
The source status flag is a 10 digit field used to encode more detailed information about the properties of the catalog object and its calibrated values. Since no GSC-II processed data is included for Tycho or SkyMap objects, the value of the Source Status Flag for a Tycho object is 99999900, Skymap is 88888800. 2MASS is 77777700.
Digit (counting from the right) | Flag | 0 | 1 | 2 | 3 | ||||||||||||||||
1 | Number of plates on which this object appeared. | This may include plate observations that were excluded from the GSC2.3. | These two digits are read together as an ordinary base ten number, eg, 04 or 12. | - | - | ||||||||||||||||
2 | |||||||||||||||||||||
3 | Centroider type associated with the exported position |
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4 | Quality of exported J magnitude | not present | fit | extrapolated | - | ||||||||||||||||
5 | Quality of exported F magnitude | not present | fit | extrapolated | - | ||||||||||||||||
6 | Quality of exported V magnitude | not present | fit | extrapolated | - | ||||||||||||||||
7 | Classification unanimity | mixed vote | unanimous vote | unanimous defect | - | ||||||||||||||||
8 | Classification voters | More than one 15um scan | One 15um scan | More than one 25um scan | One 25um scan | ||||||||||||||||
9 | Incomplete processing | Completed processing on all plates | Object was too big to be cut out (> 256x256 pixels) on at least one plate | - | - | ||||||||||||||||
10 | Deblended object | Single object on all plates | Child (deblended) object on at least one plate | - | - | ||||||||||||||||
