ADC/CDS Standard Document for Catalog:/external/misc/E6007/
ADC/CDS Standard Document for Catalog:
E/VI/7 HST Archived Exposures Catalog (STScI, 2001)
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The Archived Exposures Catalog from the HST (Hubble Space Telescope)
STScI Team
< Space Telescope Science Institute (USA) >
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ADC_Keywords: Observatory log; External catalog
Mission_Name: HST
Location: http://archive.stsci.edu/hst/aec.html
Description:
This catalogue is a copy of the Archived Exposures Catalog (AEC)
compiled from the Hubble Space Telescope Data Archive database, with
an indication about the existence of scientific images or spectra. It
provides a summary of completed HST science observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
launch.dat 197 40008 First period from launch (1990Apr) to 1993Dec
sm93.dat 198 46137 Period between 1993Dec to 1997Feb
sm97.dat 198 145485 Since 1997Feb (Version 2001-Apr)
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See also:
http://archive.stsci.edu/HDA/ : Hubble Data Archive Home Page
http://archive.stsci.edu/hst/aec.html : Archived Exposures Catalog Page
http://cadcwww.dao.nrc.ca/hst/science_help.html : HST Help Page
Byte-by-byte Description of file: *.dat
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Bytes Format Units Label Explanations
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1- 30 A30 --- Target Target Name, as given by the proposer
32- 33 I2 h RAh Right Ascension J2000 (hours)
35- 36 I2 min RAm Right Ascension J2000 (minutes)
38- 42 F5.2 s RAs [0,60] Right Ascension J2000 (seconds)
44 A1 --- DE- Declination J2000 (sign)
45- 46 I2 deg DEd Declination J2000 (degrees)
48- 49 I2 arcmin DEm Declination J2000 (minutes)
51- 54 F4.1 arcsec DEs [0,60] Declination J2000 (seconds)
56- 61 F6.2 deg v3 *V3 roll angle during observation
63- 68 A6 --- fov *The field of view configuration
70- 84 A15 --- config *Instrument configuration
86-100 A15 --- Mode Instrument operating mode
102-113 A12 --- Aper *Apertures used
115-129 A15 --- Spec *Spectral elements used.
131-135 I5 0.1nm wave *"Central" wavelength of the observation
137 A1 --- flagC *[TF] Flag indicating corrective optics
139-143 I5 s expTime Length of exposure (in seconds)
145-149 I5 --- propID Proposal ID.
151-159 A9 --- Dataset Dataset name, uniquely identifies the data
for a given exposure.
161-164 I4 yr ObsDate.Y Observation starting time (year)
166-167 I2 "month" ObsDate.M [1,12] Observation starting time (month)
169-170 I2 d ObsDate.D [1,31] Observation starting time (day)
172-173 I2 h ObsDate.h [0,24[ Observation starting time (hour)
174 A1 --- --- [:] Separator
175-176 I2 min ObsDate.m [0,60[ Observation starting time (minute)
179-182 I4 yr RelDate.Y Release Date (year)
184-185 I2 "month" RelDate.M [1,12] Release Date (month)
187-188 I2 d RelDate.D [1,31] Release Date (day of month)
190-191 I2 h RelDate.h [0,24[ Release Date (hour)
192 A1 --- --- [:] Separator
193-194 I2 min RelDate.m [0,60[ Release Date (minute)
196 A1 --- Sp [S] Existence of Spectrum Preview
197 A1 --- Im [I] Existence of Image Preview
198 A1 --- Im1 [1] Existence of a second preview
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Note on v3:
The roll angle is the angle between the telescope axis and the
line of sight.
Note on fov:
"LAUNCH" for the first period from launch (1990Apr) to 1993Dec
"SM93" for the period between 1993Dec to 1997Feb
"SM97" since 1997Feb.
Note on config:
The basic instruments are:
FGS = Fine Guide Sensor (astrometer, interferometer)
FOC = Faint Object Camera (imager), see details at
http://www.stsci.edu/ftp/instrument_news/FOC/topfoc.html
FOS = Faint Object Spectrograph, see details at
http://www.stsci.edu/ftp/instrument_news/FOS/topfos.html
HRS = High Resolution Spectrograph
HSP = High Speed Photometer
NIC = NICMOS (Near Infrared Camera and MultiObject Spectrometer,
imager, spectrometer)
http://www.stsci.edu/instruments/nicmos/topnicmos.html
PC = Planetary Camera (imager, see WFPC / WFPC2)
STIS = Space Telescope Imaging Spectrograph, see
http://www.stsci.edu/cgi-bin/stis?cat=core
WFC = Wide-Field Planetary Camera 1 from April 1990 to November 1993,
see http://www.stsci.edu/ftp/instrument_news/WFPC/wfpc1_top.html
WFPC2 = Wide-Field Planetary Camera Version 2 since November 1993, see
http://www.stsci.edu/instruments/wfpc2/wfpc2_top.html
Note on Aper:
Multiple apertures are delimited by semicolons
Note on Spec:
The designation depends on the instrument used.
The most common values start by:
E: Echelle spectrographs
F: Filters, followed by the mean wavelength (in nm or 10nm
depending on the instrument), and the indication of the
passband width as W(wide), M(medium), N(narrow)
G: Gratings
P: Polarimeters, prisms, pupils
Note on wave:
The central wavelength, in Angstroms, of the observation. For images,
this is the central wavelength of the filter used, while for spectra,
it is midpoint of the wavelength range of the spectrum.
Note on flagC:
Flag indicating corrective optics were used (i.e., COSTAR, WFPC2)
as True or False.
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History:
The file is monthly updated from HST files.
Acknowledgements:
It is a pleasure to thank Robert Hanisch <hanisch@stsci.edu>
for the access and installation of the data files,
and Daniel Durand <Daniel.Durand@hia.nrc.ca> for the details about
the previews.
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(End) Francois Ochsenbein [CDS] 15-Nov-1999