| DATA_SET_DESCRIPTION |
Data Set Overview
=================
At the ESO La Silla site is a direct imaging facility (DIFA) at the
A Nasmyth focus of the NTT, in front of the image derotator which
feeds the IRSPEC infrared spectrograph. Two remotely-controlled
45-degree mirrors can be inserted in the light beam to deviate the
telescope beam either to a CCD camera (SUSI) or to an infrared
array.
The IRSPEC at the NTT was upgraded at the beginning of the 1991
season by replacing its linear detector with a 2D SBRC 58x62 pixel
InSb array which exhibits good cosmetic quality and high quantum
efficiency from 1 to 5 micrometers. In order to optimize the
performance of this array, a multiple non-destructive sampling mode
was included within the new VME-based acquisition system developed
at ESO. Together with measures to reduce the instrumental
background, an improvement in sensitivity of about 20 has been
achieved in the 1-2.5-micrometer region. The resolving power now
ranges from 1500 to 3000 for two pixel sampling with a 4-arcsec
slit, and the slit length is 2 arcmin.
Processing
==========
The IRSPEC data have two PIs: Rita Schulz and Therese Encrenaz with
CoIs: Joachim Steuwe, and Gunther Wiedemann. The IRSPEC data were
taken from July 23 through July 31. The data have been 'flux
calibrated' but due to the difficult weather situation during the
observations the values have to be 'taken with care.'
The individual IRSPEC files have an index table (IRSPINDX) located
in the INDEX directory.
Data structure
==============
SIMPLE = T / Standard FITS format
BITPIX = 32 / No. of bits per pixel
NAXIS = 2 / No. of axes in image
NAXIS1 = 61 / No. of pixels
NAXIS2 = 30 / No. of pixels
EXTEND = T / FITS extension may be present
BLOCKED = T / FITS file may be blocked
CRPIX1 = 1 / Reference pixel
CRVAL1 = 2.10676 / Coordinate at reference pixel
CDELT1 = 0.000473316 / Coordinate increment per pixel
CTYPE1 = ' ' / Units of coordinate
CRPIX2 = 1 / Reference pixel
CRVAL2 = -11.6647 / Coordinate at reference pixel
CDELT2 = 1 / Coordinate increment per pixel
CTYPE2 = ' ' / Units of coordinate
BUNIT = 'Flux Units ' / Units are watt-cm^-2-micron-1
BSCALE = 3.74938E-11 / Scaling factor: r = f*i + z
BZERO = 0.0249304 / Zero offset: r = f*i + z
DATAMAX = 0.105448 / Maximum data value
DATAMIN = -0.0555869 / Minimum data value
ORIGIN = 'ESO-MIDAS' / Written by MIDAS
DATE = '14/06/95' / Date of writting: DD/MM/YY
FILENAME= 'flx0002.bdf' / Original file name
MIDASFTP= 'IMAGE ' / MIDAS File Type
OBJECT = 'sky H2 &01O' / MIDAS desc.: IDENT(1)
RA = 213.185 / MIDAS desc.: O_POS(1)
DEC = -12.1648 / MIDAS desc.: O_POS(2)
DATE-OBS= '16/07/94' / MIDAS desc.: O_TIME(1)
MJD-OBS = 49550 / MIDAS desc.: O_TIME(4)
TM-START= 84078 / MIDAS desc.: O_TIME(5)
EXPTIME = 59.995 / MIDAS desc.: O_TIME(7)
AIRMASS = 1.04622 / MIDAS desc.: O_AIRM(1)
INSTRUME= 'IRSPEC ' / MIDAS desc.: INSTRUME(1)
COMMENT IP_JIDNT 10 / IHAP: identifier system
COMMENT IP_ASCX 8. / IHAP: scaling in x
COMMENT IP_ASCY 8. / IHAP: scaling in y
COMMENT $EXPTIME 59.995
COMMENT $OBSERVER 'jupitertea'
COMMENT IP_FILE 'IHAP/FITS/IR940716232118.FITS::USER ' / IHAP: Begin of
COMMENT keyword
COMMENT IP_FEND / IHAP: End of keyword file
COMMENT IP_CBEND / IHAP: comment block end
HISTORY BADPIX/IRSPEC imp0002.bdf bpx0002.bdf
HISTORY COMPUTE/I
HISTORY AG middummbpx.bdf = (bpx0001.bdf-drk0000.bdf)/ffa_h2_1.bdf
HISTORY XTRACT/IMAG ysh0002.bdf = rec0001.bdf[<,@0029:>,>]
HISTORY COMPUTE/IMAG ysh0002.bdf = -1.0*ysh0002.bdf
HISTORY COMPUTE/IMAG wav0002.bdf = 1.0*ysh0002.bdf
HISTORY EXTRACT/IMAG middumb.bdf = wav0002.bdf[@1,<:
HISTORY 0061,>] COMPUTE/IMAG middummfo.bdf = middum
HISTORY .bdf COMPUTE/IMAG middummfo.bdf
HISTORY = middummfo.bdf/5.99950E+01 COMPUTE/IMAG flx0
HISTORY 02.bdf = &fo/&fs
HIERARCH ESO GEN ID = 'ARCH-1.0' / Version of related document
HIERARCH ESO GEN EXPO NO = -17214 / Image Sequence Number
HIERARCH ESO GEN EXPO TYPE = 'SCI ' / Type of exposure
HIERARCH ESO GEN EXPO LST = 51357 / Loc. Sid. time at start of e
HIERARCH ESO TEL ID = 'ESONTTA ' / Telescope Identification
HIERARCH ESO TEL LON = 70.7345 / Telescope Longitude (+=West)
HIERARCH ESO TEL LAT = -29.2584 / Telescope Latitude (+=North)
HIERARCH ESO TEL ALTITUDE = 2440 / Telescope Altitude
HIERARCH ESO TEL FOCU LEN = 38.5 / Focus lenght
HIERARCH ESO TEL RASC = -29.5 / Telescope R.Ascention Offset
HIERARCH ESO TEL DECL = -2 / Telescope Delta Offset
HIERARCH ESO INS SLIT = 560 / Size in microns
HIERARCH ESO INS DECKER = 21 / Decker number 21=OP 22=CL
HIERARCH ESO INS FILNUM = 4 / Filter number
HIERARCH ESO INS GRATING = 2 / Grating number
HIERARCH ESO INS ORDER = 1 / Grating order
HIERARCH ESO INS CENWAVL = 2.1212 / Center wave length
HIERARCH ESO INS BEGWAVL = 2.1068 / From wave length
HIERARCH ESO INS ENDWAVL = 2.13546 / To wave length
HIERARCH ESO INS RANGE = 0.02865 / Wave Length range
HIERARCH ESO INS GRATEMP = 78.2 / Grating tempearature in [K]
HIERARCH ESO ADA ID = 'ADAPTA ' / Adapter Identification
HIERARCH ESO ADA MODE = 'STD ' / Mode (standard)
HIERARCH ESO ADA ROT = -250 / Rotation at start of exposure
HIERARCH ESO ADA GUID-1 X = 22 / Guide probe x position (m)
HIERARCH ESO ADA GUID-1 Y = 22 / Guide probe y position (m)
HIERARCH ESO ADA GUID-2 X = 0.436 / Guide probe x position (m)
HIERARCH ESO ADA GUID-2 Y = 0.57 / Guide probe y position (m)
HIERARCH ESO DET NAME = 'SBRC 62 X 58' / Detector name
HIERARCH ESO DET PIXSIZE = 7.5E-05 / Size of pixel (m)
HIERARCH ESO DET BITS = 16 / ADU bits per pixel
HIERARCH ESO DET STORAG = 0 / Images are stored as scan-lines
HIERARCH ESO DET DIT = 59.995 / Detector Integration Time(sec)
HIERARCH ESO DET NDIT = 5 / # of integrations/measurement
HIERARCH ESO DET NINT = 1 / # of measurements
HIERARCH ESO DET DUMDIT = 0 / # of dummy readouts
HIERARCH ESO DET TEMPMIN = 29.98 / Detector temp. min.
HIERARCH ESO DET TEMPMAX = 30.07 / Detector temp. max.
HIERARCH ESO DET VBIAS = -3.5 / Bias (reset) voltage
HIERARCH ESO DET VGATE = -2.8 / Gate voltage
HIERARCH ESO DET NCORRS = 4 / Sampling method: NONDEST
HIERARCH ESO DET RSPD = 8 / Microprogram: read speed
HIERARCH ESO DET NSAMPLES = 1115 / #of samples/DIT
HISTORY ESO-DESCRIPTORS START ................
HISTORY 'AB_FACTOR' ,'R*4 ' , 1, 1,'5E14.7',' ',' '
HISTORY 9.0151751E-01
HISTORY
HISTORY 'AB_SHIFT' ,'R*4 ' , 1, 1,'5E14.7',' ',' '
HISTORY -4.6290830E-03
HISTORY
HISTORY 'TIME_SID' ,'R*8 ' , 1, 1,'3E23.15',' ',' '
HISTORY 5.135700000000000E+04
HISTORY
HISTORY 'IRS_FACTOR' ,'R*4 ' , 1, 1,'5E14.7',' ',' '
HISTORY 9.0151799E-01
HISTORY
HISTORY 'IRS_SHIFT' ,'R*4 ' , 1, 1,'5E14.7',' ',' '
HISTORY -4.6290802E-03
HISTORY
HISTORY 'S_NUM' ,'I*4 ' , 1, 1,'7I10',' ',' '
HISTORY 2
HISTORY
HISTORY 'SKY_P' ,'R*4 ' , 1, 2,'5E14.7',' ',' '
HISTORY 2.6000000E+01 3.1000000E+01
HISTORY
HISTORY 'IRS_RECTIFIED' ,'I*4 ' , 1, 1,'7I10',' ',' '
HISTORY 1
HISTORY
HISTORY 'LHCUTS' ,'R*4 ' , 1, 4,'5E14.7',' ',' '
HISTORY -5.0000001E-02 5.5000001E-01-5.5586923E-02 1.0544774E-01
HISTORY
HISTORY 'DISPLAY_DATA' ,'I*4 ' , 1, 9,'7I10',' ',' '
HISTORY -7 -7 31 13 0 -1
HISTORY - -1 -1
HISTORY
HISTORY 'HIST_BINS' ,'R*4 ' , 1, 5,'5E14.7',' ',' '
HISTORY 2.5600000E+02 9.0819520E-01 6.1362451E+02 8.4521429E+02
HISTORY 0.0000000E+0
HISTORY
HISTORY 'HISTOGRAM' ,'I*4 ' , 1, 256,'7I10',' ',' '
HISTORY 1 0 0 0 0 0
HISTORY 0 0 0 0 0 0
HISTORY 0 0 0 0 0 0
HISTORY 0 0 0 0 0 0
HISTORY 0 0 0 0 0 0
HISTORY 0 0 0 0 0 0
HISTORY 0 0 0 1 0 1
HISTORY 0 1 1 0 2 1
HISTORY 4 2 1 1 2 3
HISTORY 1 4 0 1 3 1
HISTORY 1 4 3 4 1 2
HISTORY 1 3 4 5 3 3
HISTORY 5 4 3 4 6 3
HISTORY 4 3 3 7 3 7
HISTORY 2 6 10 6 2 6
HISTORY 8 4 3 4 7 2
HISTORY 5 6 3 4 3 2
HISTORY 2 1 5 2 2 2
HISTORY 2 2 3 3 4 3
HISTORY 0 1 1 2 3 1
HISTORY 2 4 0 1 2 1
HISTORY 2 1 2 0 1 3
HISTORY 3 1 0 3 2 1
HISTORY 1 1 3 1 1 1
HISTORY 0 2 0 3 0 0
HISTORY 0 2 1 1 0 1
HISTORY 2 0 1 1 3 1
HISTORY 0 2 1 0 4 1
HISTORY 0 1 0 0 0 1
HISTORY 0 1 1 1 1 0
HISTORY 0 0 0 0 0 1
HISTORY 0 0 1 0 0 1
HISTORY 0 0 1 1 0 1
HISTORY 1 0 0 0 0 0
HISTORY 0 0 1 1 0 0
HISTORY 0 0 0 0 1 0
HISTORY 0 0 1 0
HISTORY
HISTORY 'STATISTIC' ,'R*4 ' , 1, 11,'5E14.7',' ',' '
HISTORY 6.1362451E+02 8.4521429E+02 7.1825739E+02 3.8854671E+01
HISTORY 3.7384038E+0
HISTORY 2.7096310E+11 2.6719175E+05 7.0841736E+02 6.1407861E+02
HISTORY 2.5600000E+0
HISTORY 9.0819520E-01
HISTORY
HISTORY 'WINDOW_FROM' ,'I*4 ' , 1, 2,'7I10',' ',' '
HISTORY 1 26
HISTORY
HISTORY 'WINDOW_TO' ,'I*4 ' , 1, 2,'7I10',' ',' '
HISTORY 62 31
HISTORY
HISTORY ESO-DESCRIPTORS END ................
END
Software
========
Standard IRAF reduction routines were used.
Media/Format
============
This dataset is 8 MM tape submission to PDS which was referenced in
the Schulz et al. (1995) [SCHULZETAL1995] article.
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