VI/99 Merged Log of IUE Observations (NASA-ESA, 1999)
Merged Log of IUE Observations
NASA / ESA / SERC
ADC_Keywords: Observatory log; Spectra, ultraviolet
Mission_Name: IUE
Description:
The log contains a summary of all IUE Newly Extracted Spectra (INES),
which resulted from a post-processing effort at Vilspa. It was
constructed by using verified data from the IUE Final Archive Master
Catalogue. The observations cover the whole life of the satellite,
from March 1978 to September 1996.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
inescat.dat 180 108651 The INES (IUE Newly Extracted Spectra)
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See also:
http://ines.vilspa.esa.es/ines : the INES home page.
http://archive.stsci.edu/iue : IUE Archive at STScI
Byte-by-byte Description of file: inescat.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Camera *[LSWRP] IUE Camera (LWP/LWR/SWP/SWR)
4- 8 I5 --- Image [501/58388] IUE Image number
10 A1 --- Disp [HLN] Dispersion (High, Low, Not applicable)
12 A1 --- Aper *[LSN] Aperture (Large, Small, Not applicable)
14- 17 I4 yr Obs.Y Date of observation start (UT, year)
18 A1 --- --- [-] Separator
19- 20 I2 "month" Obs.M Date of observation start (UT, month number)
21 A1 --- --- [-] Separator
22- 23 I2 d Obs.D Date of observation start (UT, day number)
25- 26 I2 h Obs.h Time of observation start (UT, hour)
27 A1 --- --- [:] Separator
28- 29 I2 min Obs.m Time of observation start (UT, minute)
30 A1 --- --- [:] Separator
31- 32 I2 s Obs.s Time of observation start (UT, second)
34- 36 A3 --- ExpMode *Exposure mode
38 A1 --- XtrMode [PE] Extraction mode (Point or Extended)
40- 48 F9.3 s ExpTime Effective exposure time
50- 62 F13.5 d HJDobs ? Heliocentric corrected Julian date
of mid-exposure
64- 91 A28 --- Object Homogeneous object identifier
93-100 F8.4 deg RAdeg Right ascension (1950) of Object
102-109 F8.4 deg DEdeg Declination (1950) of Object
111-116 F6.2 deg AperPA ? Position angle of large aperture
118-119 A2 --- FESmode *FES Mode (BO/FO/FU/SO/SU)
121-125 I5 --- FEScount *? FES counts (contaminated after Nov. 1991)
127-142 A16 --- Target Target as given by Guest Observer
144-151 F8.4 deg RAtar.deg *Right ascension (1950) of target
153-160 F8.4 deg DEtar.deg *Declination (1950) of target
162-163 I2 --- IUEClass *IUE Object Class
165-167 A3 --- ExpCC *Exposure Classification Code
169-173 A5 --- PGM-ID Observing Program Identification
175 A1 --- Station [GV] Observing station (GSFC or VILSPA)
177-180 A4 --- AbnCode *Abnormality codes
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Note on Camera:
LWP Long Wavelength Prime Camera (Camera no.1)
LWR Long Wavelength Redundant Camera (Camera no.2)
SWP Short Wavelength Prime Camera (Camera no.3)
SWR Short Wavelength Redundant Camera (Camera no.4)
Note on Aper:
L = 10x20arcsec large oval aperture
S = 3arcsec small circular aperture
Note on ExpMode: made of 3 characters with meaning:
≡=> Left Character (multiple exposures in the large aperture):
N No multiple exposures made (most common case)
A Multiple exposures along the APERTURE
X X-offsets along FES X-axis for multiple exposures
Y Y-offsets along FES X-axis for multiple exposures
O Other configuration for multiple exposures
≡=> Middle character (segmented exposure)
N No, exposure taken by one commanded exposure (most common case)
Y Yes, exposure was segmented
≡=> Right character (trailed exposure)
N No trail (most common case)
X Exposure trailed along FES X-axis
Y Exposure trailed along FES Y-axis
Note on RAtar.deg, DEtar.deg:
coordinates given by GO may differ from the homogeneous coordinates,
e.g. for extended objects.
Note on IUEClass:
See below the "List of IUE Classes" section.
Note on FESmode :
FU = Fast track/Underlap
FO = Fast track/Overlap
SO = Slow track/Overlap
Note on FEScount:
Counts are photon counts averaged over an integration time
dependent on the needs of target acquisition.
The FES detector saturates at a count of 28673 !
Note on ExpCC : made of 3 characters with meaning:
≡=> Left Character (exposure levels of continuum)
≡=> Middle Character (exposure levels of continuum)
mean both the following:
0 = Not applicable
1 = No spectrum visible
2 = Faint spectrum: max dn < 20 above local background
3 = Underexposed: max dn < 100 above local background
4 = Weak: 100 < max dn < 150 above local background
5 = Good: no sat., max dn > 150 above local background
6 = a bit strong: a few pixels are saturated
7 = saturated for less than half the spectrum
8 = mostly saturated but some parts usable
9 = completely saturated
≡=> Right Character (background level)
classified in terms of a standard region of each camera
outside the area affected by the high resolution orders.
The value used is the mean dn given by a subset histogram
approximately 10 pixels in width.
0 = 0 < dn < 20
1 = 21 < dn < 30
2 = 31 < dn < 40
3 = 41 < dn < 50
4 = 51 < dn < 60
5 = 61 < dn < 70
6 = 71 < dn < 80
7 = 81 < dn < 90
8 = 91 < dn < 100
9 = 101 < dn < ...
X = saturated
Note on AbnCode:
A = Abnormal READ (ABNREAD)
B = BAD Scans LWP (ABNBADSC)
C = CORRUPTION including 159 DN
H = History Play back (ABNHISTR)
M = Missing THDA, any of THDAEND, THDAREAD, or THDASTRT
N = Non-standard image acquisition ABNNOSTD
O = OFFSET from nucleus; from center; etc.
P = Readmode = PARTIAL
R = REMNANT of previous spectrum visible
S = Serendipity Exposure
T = TRACK LOST
U = UVC voltage other than -5Kev
W = ABNHTRWU = LWR Heater Warm Up
Z = contamination by solar spectrum or extended source
8 = Cross-correlation less than 80% - CC-PERCN
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List of IUE Classes:
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00 Sun 50 R, N or S types
01 Earth 51 Long Period Variable Stars
02 Moon 52 Irregular Variables
03 Planet 53 Regular Variables
04 Planetary satellite 54 Dwarf Novae
05 Minor Planet 55 Classical Novae
06 Comet 56 Supernovae
07 Interplanetary medium 57 Symbiotic Stars
08 Giant Red Spot 58 T Tauri
59 X-Ray
10 WC 60 Shell Star
11 WN 61 Eta Carinae
12 Main Sequence O 62 Pulsar
13 Supergiant O 63 Nova-like
14 Oe 64 Other stellar Object
15 Of 65 Misidentified targets
16 sdO 66 Interacting Binaries
17 WD O
19 UV-strong
20 B0-B2 V-IV 70 Planetary Nebula + Central Star
21 B3-B5 V-IV 71 Planetary Nebula - Central Star
22 B6-B9,5 V-IV 72 H II Region
23 B0-B2 III-I 73 Reflection Nebula
24 B3-B5 III-I 74 Dark Cloud (absorption spectrum)
25 B6-B9.5 III-I 75 Supernova Remnant
26 Be 76 Ring Nebula (shock-ionised)
27 Bp
28 sdB
29 WDB
30 A0-A3 V-IV 80 Spiral Galaxy
31 A4-A9 V-IV 81 Elliptical Galaxy
32 A0-A3 III-I 82 Irregular Galaxy
33 A4-A9 III-I 83 Globular Cluster
34 Ae 84 Seyfert Galaxy
35 Am 85 Quasar
36 Ap 86 Radio Galaxy
37 WDA 87 BL Lacertae object
38 Horizontal Branch 88 Emission Line Galaxy (non-Seyfert)
39 Composite
40 F0-F2 90 Intergalactic Medium
41 F3-F9
42 Fp
43 Late Type Degenerate Stars
44 G IV-VI
45 G I-III
46 K IV-VI
47 K I-III
48 M Dwarfs
49 M I-III 99 Nulls and Flat Fields
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History:
The log is dated 27 March 1999.
Acknowledgements:
It is a pleasure to thank Daniel Ponz and
Antonio Talavera who forwarded the catalogue
to CDS.
References:
Barylak M., Schmitz M., Wamsteker W.: 1988, The IUE Data Base -
Homogenizing the IUE Object Nomenclature, ESA SP-281, Vol. 2, pg. 373-376.
Egret D., Janiewicz, G., Barylak, M., Wamsteker, W.: 1992, Homogenizing
the Object Nomenclature in the IUE Log of Observations, Astronomy
from Large Databases II, Haguenau, Sep. 14-16, 1992, pg. 265.
Wamsteker W., Driessen C., Munoz J.R., Hassall B.J., Pasian F., Barylak M.,
Russo G., Egret D., Murray J., Talavera A., Heck A.: 1989, IUE-ULDA/USSP:
The On-line Low Resolution Spectral Data Archive of the International
Ultraviolet Explorer, A&A Suppl., 79, pg. 1
(VILSPA IUE Preprint No. 39, January 1989.)
(End) Francois Ochsenbein [CDS] 22-Jun-1999