|
INES Primary FITS Header |
SIMPLE
BITPIX
NAXIS
EXTEND
TELESCOP
DATE
ORIGIN
The following list provides a short description of the meaning of the FITS
keywords of the INES primary header. A full definition can be found in
Chapter 14 of the NEWSIPS Manual.
| CAMERA | LWP, LWR or SWP |
| IMAGE | Image Number |
| DISPERSN | Dispersion processing type: LOW, HIGH or HIGH@LOW (for high resolution spectra resampled to the low resolution wavelength step) |
| APERTURE | LARGE, SMALL or NA (not applicable: NULLs and Flat-field images) |
| ABNNOSTD | YES for images taken in a non-standard manner |
| ABNBADSC | YES to indicate that a bad camera static pointing was found at the beginning of a camera read (only for LWP) |
| ABNHTRWU | YES when a heater warm-up (usually 4 minutes) was performed during the prep sequence (only for LWR) |
| ABNREAD | YES for images read at a rate other than the standard 20 KB/s telemetry rate |
| ABNUVC | YES when a non-standard Ultraviolet to Visible Converter (UVC) voltage was used during the exposure |
| ABNHISTR | YES when the original image reconstruction failed and the image had to be recovered from the engineering history tape |
| ABNOTHER | YES for other anomalies during image acquisition and/or processing. DMU for images affected by DMU corruption |
| POSANGLE | Large aperture position angle in degrees |
| ABNMINFR | YES if missing minor frames are detected in the raw image |
| CC-PERCN | Percentage of the total number of sub-image arrays for which cross correlations were successful |
| ITF | Intensity Transfer Function used in image processing |
| COMMENT BY RA | Resident Astronomers comments |
| COMMENT BY GO | Guest Observer comments |
| DATEOBS | Date at the start of observation (UT) |
| TIMEOBS | Exposure start time (UT) |
| EXPTRMD | Trail mode: along the FES X-axis (X), the FES Y-axis (Y), or not trailed (NO) |
| EXPMULT | Multiple spectra in the large aperture |
| EXPSEGM | Spectrum obtained by more that one commanded exposure |
| EXPTIME | Effective exposure time in seconds |
| RA | Right Ascension of the target in degrees (1950) |
| DEC | Declination of the target in degrees (1950) |
| TARGET | Target name as provided by the Guest Observer |
| TARGRA | Target Right Ascension in degrees (1950) as provided by the Guest Observer |
| TARGDEC | Target Declination in degrees (1950) as provided by the Guest Observer |
| OBJECT | Homogeneous target identifier |
| HJD-MID | Heliocentric JD at mid observation |
| RADVELO | Heliocentric radial velocity correction for S/C and Earth motion (only for High dispersion) |
The only part of the original IUE VICAR Header included in the INES header are the seven ``COMMENT'' lines, which contain the comments entered by the Telescope Operator in real time.
From the NEWSIPS processing history, only the comments generated by the RAW SCREEN module are kept. In the case of low dispersion spectra, the comments written by SWET are substituted by those generated by the new extraction method.
SIMPLE = T / file does conform to FITS standard
BITPIX = 8 / number of bits per data pixel
NAXIS = 0 / number of data axes
EXTEND = T / FITS dataset may contain extensions
TELESCOP= 'IUE ' / International Ultraviolet Explorer
DATE = '19/11/97' / Date file was written
ORIGIN = 'VILSPA ' / Institution generating the file
CAMERA = 'LWP ' / Camera
IMAGE = 31755 / Sequential image number
DISPERSN= 'HIGH@LOW' / Dispersion processing type
APERTURE= 'LARGE ' / Aperture
ABNNOSTD= 'NO ' / Non-standard image acquisition
ABNBADSC= 'NO ' / LWP bad scans
ABNHTRWU= 'NO ' / LWR heater warmup
ABNREAD = 'NO ' / Read at other than 20 KB
ABNUVC = 'NO ' / Non-standard UVC voltage
ABNHISTR= 'NO ' / History replay
ABNOTHER= 'DMU ' / Other abnormality
POSANGLE= 196.90 / Pos angle of the large aperture (deg)
ABNMINFR= 'NO ' / Bad/missing minor frames
CC-PERCN= 91.6 / Cross-correlation % successful
ITF = 'LWP92R94A' / ITF identification
COMMENT BY RA: Warning: Image affected by the 159DN anomaly
COMMENT BY RA: 382 pixels with 159DN, corrupted 306 +16/-16
COMMENT BY GO: FESBCK:1031,FO; CORRUPTED 159DN SPECTRAL IMAGE
DATEOBS = '26/11/95' / Observing date
TIMEOBS = '23:13:31' / Observing time
EXPTRMD = 'NO-TRAIL' / Trail mode
EXPMULT = 'NO ' / Multiple exposure mode
EXPSEGM = 'NO ' / Segmented exposure code
EXPTIME = 1199.595 / Integration time in seconds
RA = 112.8753 / Homogeneous R.A. in degrees
DEC = -14.4144 / Homogeneous Dec. in degrees
TARGET = 'HR 2902 ' / Object as given by Guest Observer
TARGRA = 112.8754 / R.A. in degrees (given by GO)
TARGDEC = -14.4142 / Dec. in degrees (given by GO)
OBJECT = 'HD 60414' / Homogeneous Object ID
HJD-MID = 2450048.47742 / JD middle of obs. with Heliocentric corr.
RADVELO = 22.06 / Heliocentric velocity correction in km/s
COMMENT IUE-VICAR HEADER START
HR 2902,LWP31755,HRES,LAP,20M0S,23:13:31
951126,SPREP,MAXG,LOREAD,SC046,THEISSEN(SO)
49,24100,FO,8.8,,236D5M49S,1268,631,589,FO
FESBCK:1031,FO; CORRUPTED 159DN SPECTRAL IMAGE
COMMENT IUE-VICAR HEADER END
HISTORY START RAW_SCREEN 19-NOV-1997 04:40:14
HISTORY 7 BRIGHT SPOTS DETECTED
HISTORY 0 MISSING MINOR FRAMES DETECTED
HISTORY *** WARNING: THIS IMAGE IDENTIFIED AS AFFECTED BY DMU CORRUPTION
HISTORY ALL PIXELS WITH DN = 159 FLAGGED AS POSSIBLY ERRONEOUS
HISTORY LARGE APERTURE SPECTRUM WILL BE EXTRACTED AS
HISTORY POINT SOURCE
HISTORY LARGE APERTURE CONTINUUM DN LEVEL = 248
HISTORY BACKGROUND DN LEVEL = 45
HISTORY ORDER REGISTRATION
HISTORY GLOBAL OFFSET -0.73 PIXELS RELATIVE TO FIDUCIAL: LWP 06316
HISTORY RELATIVE ORDER LOCATIONS DETERMINED FROM EMPIRICAL POSITIONS
HISTORY END RAW_SCREEN 19-NOV-1997 04:40:18
END