| 	Chandra X-ray Center  | 
	PI: Prof Andrew Fabian   | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.7.1 | ASCDS version number | 
| DATE | 2006-04-08T19:32:36 | Date and time of file creation | 
| DATE-OBS | 2004-12-12T05:17:16 | Observation start date | 
| DATE-END | 2004-12-12T11:12:43 | Observation end date | 
| RA_PNT | 121.20949564169 | Pointing RA | 
| DEC_PNT | 10.274691613652 | Pointing Dec | 
| ROLL_PNT | 66.737742442596 | Pointing Roll | 
| RA_TARG | 121.199583 | Observer's specified target RA | 
| DEC_TARG | 10.256389 | Observer's specified target Dec | 
| DATAMODE | VFAINT | Data mode | 
| READMODE | TIMED | Read mode | 
| FP_TEMP | 153.60722351 | Focal Plane Temperature [K] | 
| FSW_VERS | 31 | ACIS flight software version number | 
| Parameter | Value | Description | 
|---|---|---|
| ASCDSVER | 7.6.7.1 | ASCDS version number | 
| DATE | 2006-04-08T20:24:45 | Date and time of file creation | 
| DATE-OBS | 2004-12-12T05:17:16 | Observation start date | 
| DATE-END | 2004-12-12T11:12:43 | Observation end date | 
| INSTRUME | ACIS | Instrument | 
| DETNAM | ACIS-35678 | Detector | 
| GRATING | NONE | Grating | 
| OBJECT | 3C 191 | Source name | 
| TITLE | Extended inverse Compton emission from distant powerful radio galaxies | Proposal title | 
| OBSERVER | Prof Andrew Fabian | Principal investigator | 
| OBS_ID | 5626 | Observation id | 
| SEQ_NUM | 701049 | Sequence number | 
| RA_NOM | 121.20949564169 | Nominal RA | 
| DEC_NOM | 10.274691613652 | Nominal Dec | 
| ROLL_NOM | 66.737742442596 | Nominal Roll |