Exposure
ID
GRAVI.2025-04-23T06:40:12.122_1
Header ID
GRAVI.2025-04-23T06:40:12.122
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 06:40:12.122
UTC End
2025-04-23 06:44:12.122
MJD Start
60788.27791808
MJD End
60788.28069585778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0053195
Ambient temperature (°C)
13.15
Seeing (arcsec)
0.825
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 72.1750 72.8700 86.5000 87.3000
A0-J2 113.3140 114.0070 60.6000 61.6000
A0-K0 122.3150 122.6280 40.5370 41.4650
G1-J2 57.7400 57.7840 27.6000 28.4000
G1-K0 88.8820 88.8620 4.8160 5.4350
J2-K0 42.0400 42.1820 332.7590 333.1380
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 60788.27791808
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 72.175
HIERARCH ESO ISS PBL12 END 72.87
HIERARCH ESO ISS PBLA12 START 86.5
HIERARCH ESO ISS PBLA12 END 87.3
HIERARCH ESO ISS PBL13 START 113.314
HIERARCH ESO ISS PBL13 END 114.007
HIERARCH ESO ISS PBLA13 START 60.6
HIERARCH ESO ISS PBLA13 END 61.6
HIERARCH ESO ISS PBL14 START 122.315
HIERARCH ESO ISS PBL14 END 122.628
HIERARCH ESO ISS PBLA14 START 40.537
HIERARCH ESO ISS PBLA14 END 41.465
HIERARCH ESO ISS PBL23 START 57.74
HIERARCH ESO ISS PBL23 END 57.784
HIERARCH ESO ISS PBLA23 START 27.6
HIERARCH ESO ISS PBLA23 END 28.4
HIERARCH ESO ISS PBL24 START 88.882
HIERARCH ESO ISS PBL24 END 88.862
HIERARCH ESO ISS PBLA24 START 4.816
HIERARCH ESO ISS PBLA24 END 5.435
HIERARCH ESO ISS PBL34 START 42.04
HIERARCH ESO ISS PBL34 END 42.182
HIERARCH ESO ISS PBLA34 START 332.759
HIERARCH ESO ISS PBLA34 END 333.138
HIERARCH ESO ISS AMBI TAU0 START 0.00596
HIERARCH ESO ISS AMBI TAU0 END 0.004679
HIERARCH ESO ISS AMBI TEMP 13.15
HIERARCH ESO ISS AMBI FWHM START 0.78
HIERARCH ESO ISS AMBI FWHM END 0.87