| Chandra X-ray Center | 	PI: Dr. CXC Calibration  | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.9 | Processing system revision | 
| DATE | 2006-11-06T11:20:51 | Date and time of file creation | 
| DATE-OBS | 2001-02-01T04:02:33 | Observation start date | 
| DATE-END | 2001-02-01T04:52:43 | Observation end date | 
| RA_PNT | 279.40987974653 | Pointing RA | 
| DEC_PNT | 38.888885082205 | Pointing Dec | 
| ROLL_PNT | 37.739857462097 | Pointing Roll | 
| RA_TARG | 279.234792 | Observer's specified target RA | 
| DEC_TARG | 38.783778 | Observer's specified target Dec | 
| DEGAP | hrcsD1999-07-22gaplookupN0002.fits | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.9 | Processing system revision | 
| DATE | 2006-11-06T11:44:55 | Date and time of file creation | 
| DATE-OBS | 2001-02-01T04:02:33 | Observation start date | 
| DATE-END | 2001-02-01T04:52:43 | Observation end date | 
| INSTRUME | HRC | Instrument | 
| DETNAM | HRC-S | Detector | 
| GRATING | NONE | Grating | 
| OBJECT | VEGA, HRC-S, AO2 | Source name | 
| TITLE | CALIBRATION OBSERVATIONS OF VEGA TO MONITOR THE TRANSMISSION OF THE OPTICAL/UV FILTERS ON ACIS AND HRC | Proposal title | 
| OBSERVER | Dr. CXC Calibration | Principal investigator | 
| OBS_ID | 990 | Observation id | 
| SEQ_NUM | 290071 | Sequence number | 
| RA_NOM | 279.40987974653 | Nominal RA | 
| DEC_NOM | 38.888885082205 | Nominal Dec | 
| ROLL_NOM | 37.739857462097 | Nominal Roll |