Exposure
ID
GRAVI.2025-04-23T06:35:42.111_1
Header ID
GRAVI.2025-04-23T06:35:42.111
Date updated
2025-04-23 06:50:49 UTC+0000
Release date
2026-04-23 06:50:49 UTC+0000
UTC Start
2025-04-23 06:35:42.111
UTC End
2025-04-23 06:39:42.111
MJD Start
60788.27479295
MJD End
60788.277570727776
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.006704
Ambient temperature (°C)
13.17
Seeing (arcsec)
0.76
Observation
ID
66934
Category
science
Program ID
115.28G0.002
Program Title
VLTI SURVEY ON GAIA BINARIES: STELLAR EVOLUTION AND BINARY FORMATION AT LOW/HIGH METALLICITY
Program Type
Normal
PI / COI
LU / KRAUS / GARDNER
Target
ID
49762
Name
HD_173542
RA
282.043601
DEC
-45.81271
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 71.4170 72.1280 85.7000 86.5000
A0-J2 112.5640 113.2670 59.6000 60.6000
A0-K0 121.9760 122.2940 39.5390 40.4770
G1-J2 57.6920 57.7370 26.6000 27.5000
G1-K0 88.9000 88.8830 4.1570 4.7770
J2-K0 41.8830 42.0300 332.3600 332.7350
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.28G0.002
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60788.27479295
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 173542
HIERARCH ESO INS SOBJ NAME HD_173542
RA 282.043601
DEC -45.81271
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE COMBINED
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 255.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 71.417
HIERARCH ESO ISS PBL12 END 72.128
HIERARCH ESO ISS PBLA12 START 85.7
HIERARCH ESO ISS PBLA12 END 86.5
HIERARCH ESO ISS PBL13 START 112.564
HIERARCH ESO ISS PBL13 END 113.267
HIERARCH ESO ISS PBLA13 START 59.6
HIERARCH ESO ISS PBLA13 END 60.6
HIERARCH ESO ISS PBL14 START 121.976
HIERARCH ESO ISS PBL14 END 122.294
HIERARCH ESO ISS PBLA14 START 39.539
HIERARCH ESO ISS PBLA14 END 40.477
HIERARCH ESO ISS PBL23 START 57.692
HIERARCH ESO ISS PBL23 END 57.737
HIERARCH ESO ISS PBLA23 START 26.6
HIERARCH ESO ISS PBLA23 END 27.5
HIERARCH ESO ISS PBL24 START 88.9
HIERARCH ESO ISS PBL24 END 88.883
HIERARCH ESO ISS PBLA24 START 4.157
HIERARCH ESO ISS PBLA24 END 4.777
HIERARCH ESO ISS PBL34 START 41.883
HIERARCH ESO ISS PBL34 END 42.03
HIERARCH ESO ISS PBLA34 START 332.36
HIERARCH ESO ISS PBLA34 END 332.735
HIERARCH ESO ISS AMBI TAU0 START 0.006871
HIERARCH ESO ISS AMBI TAU0 END 0.006537
HIERARCH ESO ISS AMBI TEMP 13.17
HIERARCH ESO ISS AMBI FWHM START 0.74
HIERARCH ESO ISS AMBI FWHM END 0.78