Access to Astronomical Catalogues

← Click to display the menu
VI/111              ISO Observation Log     (ISO Data Centre, 2004)

ISO Observation Log <ISO Data Centre (2004)>
ADC_Keywords: Infrared sources ; Observatory log Mission_Name: ISO Description: The Infrared Space Observatory (ISO) is an ESA (European Space Agency) project with instruments funded by ESA member states (especially the PI countries France, Germany, The Netherlands and the United Kingdom) and with participation of ISAS (Japan) and NASA (USA). It was operated from November 1995 till May 1998, almost a year longer than expected. As an unprecedented observatory for infrared astronomy, able to examine cool and hidden places in the Universe, ISO successfully made nearly 30,000 scientific observations. The ISO Data Archive is available at the ISO Data Centre at and it includes about 150,000 observations, if account is taken of calibration and parallel or serendipity mode observations. The catalogue contains all observations performed in standard observing modes exempt from technical problems; special flags indicate calibration observations. ISO helpdesk: File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file isolog.dat 144 36737 *The ISO Observation Log abstract/* 0 1732 Abstracts
Note on isolog.dat: the file includes 31895 standard observations, and 4843 calibration observations.
See also: : the ISO Data Centre Home Page Byte-by-byte Description of file: isolog.dat
Bytes Format Units Label Explanations
1- 18 A18 --- FOV Maximum field of view of the observation (1) 20- 49 A30 --- Target Target Name, as given by the observer 51- 55 A5 --- AOT Astronomical observing template (2) 57- 64 I8 --- TDT Number that identifies an ISO Observation 66- 73 F8.4 deg RAdeg Actual pointing Right Ascension (J2000) (3) 74- 81 F8.4 deg DEdeg Actual pointing Declination (J2000) (3) 83- 89 F7.3 um minLam The shortest wavelength (4) 91- 97 F7.3 um maxLam The longest wavelength (4) 99 A1 --- cal [*] indicates calibration observations (6) 101-108 A8 --- ObsID Observer identification of the proposal 109 A1 --- abs [+] '+' when the abstract is available (5) 110-117 A8 --- PropID Proposal designation 119-120 I2 d oStart.D Start day of observation (UTC) 121 A1 --- --- [-] 122-124 A3 "month" oStart.M Start month of observation (UTC) 125 A1 --- --- [-] 126-129 I4 yr oStart.Y [1995/1998] Start year of observation (UTC) 131-132 I2 h oStart.h Start time of observation (UTC, hour) 133 A1 --- --- [:] 134-135 I2 m oStart.m Start time of observation (UTC, minute) 136 A1 --- --- [:] 137-138 I2 s oStart.s Start time of observation (UTC, second) 140-144 I5 s oLen Duration of observation
Note (1): The maximum field of view of the observations. For rectangular apertures, the sizes are given as parallel to the spacecraft Z and Y axis, respectively. For circular apertures, the diameter is given. For rasters, the field of view is calculated from the apertures and the raster parameters m X n respectively (number of points in a scanline X number of scanlines). If the resulting map presents gaps, the string "(sparse)" is attached. Note (2): Instrument observing mode. The first three letters reveal the instrument: CAM = ISOCAM, the infrared camera covering the 2.5-17µm range, PHT = ISOPHOT, the photo-polarimeter operated between 2.5 and 240µm, SWS = Short-Wave Spectrometer covering the 2.4-45µm wavelength range, LWS = Long-Wave Spectrometer covering the 45-196.8µm wavelength range. Note (3): The centre coordinates of the observation as recalibrated after the mission, given in the J2000 equatorial system. Note (4): Shortest and longest wavelengths the photons were collected, i.e. - for photometry the lowest/highest passband wavelengths - for spectra the shortest/longest observed wavelengths Note (5): When this flag is a plus (+), the abstract file is available in the abstract subdirectory, as a file named by the concatenation of the ObsID column, an underscore (_), and the PropID column. Note (6): The calibration observations performed with the flexible Calibration Uplink System correspond to AOTs of type "99". Only for CAM99 the pipeline produces scientifically validated products and postcards. This flag therefore is set for the other instruments only.
Additional links: The following links give access to the Postcard Server and various level of data processing (e.g. for TDT 56702208): - For the Postcard Server: In it, the following links are given: - For the Raw Data (the 2 lines must be joined): ?obsno=56702208&level=Raw_Data - For the Fully (pipeline) processed set (the 2 lines must be joined): ?obsno=56702208&level=Fully_Proc - For the Highly Processed Data Products set: - For the Data Quality Report: Acknowledgements: It is a pleasure to thank Timo Prusti and Alberto Salama, for the multiple interactions and helps in the preparation of the data. History: * 15-Apr-2004: First version * 02-Nov-2004: 1 record dropped (TDT 47001305, rescheduled as TDT67700205) and positions added for the 8 missing observations: 02600701, 02600802, 05401803, 12501518, 30100169, 30100170, 30100201, 30100202 (kindly supplied to Alberto Salama to Emmanuel Davoust)
(End) Alberto Salama [ISO Data Centre], Francois Ochsenbein [CDS] 15-Apr-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service