Exposure
ID
GRAVI.2025-10-14T01:37:51.912_1
Header ID
GRAVI.2025-10-14T01:37:51.912
Date updated
2025-10-14 01:56:08 UTC+0000
Release date
2025-10-14 01:37:51 UTC+0000
UTC Start
2025-10-14 01:37:51.912
UTC End
2025-10-14 01:42:39.912
MJD Start
60962.06796194
MJD End
60962.07129527334
Exposure time (s)
288.0
Validation level
1
Tau 0: Coherence time (s)
0.004163
Ambient temperature (°C)
11.29
Seeing (arcsec)
0.815
Observation
ID
70939
Category
calibrator
Program ID
115.29R0.001
Program Title
CONSTRAINING CALIBRATOR STAR DIAMETERS FOR RELIABLE INTERFEROMETRIC MEASUREMENTS
Program Type
ToO
PI / COI
GALLENNE / KERVELLA / BRAS
Target
ID
52644
Name
HD189738
RA
300.385849
DEC
0.66282
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
MEDIUM-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 39.3860 39.2500 168.0000 169.0000
A0-J2 102.7100 100.8140 92.7000 92.7000
A0-J6 169.4500 169.5590 35.1790 35.2110
B5-J2 100.2730 99.1300 70.3000 70.1000
B5-J6 198.3480 198.7420 26.8060 27.0100
J2-J6 143.3790 143.3210 358.0070 358.8210
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.29R0.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60962.06796194
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD189738
HIERARCH ESO INS SOBJ NAME HD189738
RA 300.385849
DEC 0.66282
HIERARCH ESO INS SPEC RES MEDIUM
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 A0
HIERARCH ESO ISS CONF STATION2 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 326.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 96
HIERARCH ESO ISS PBL12 START 39.386
HIERARCH ESO ISS PBL12 END 39.25
HIERARCH ESO ISS PBLA12 START 168.0
HIERARCH ESO ISS PBLA12 END 169.0
HIERARCH ESO ISS PBL13 START 102.71
HIERARCH ESO ISS PBL13 END 100.814
HIERARCH ESO ISS PBLA13 START 92.7
HIERARCH ESO ISS PBLA13 END 92.7
HIERARCH ESO ISS PBL14 START 169.45
HIERARCH ESO ISS PBL14 END 169.559
HIERARCH ESO ISS PBLA14 START 35.179
HIERARCH ESO ISS PBLA14 END 35.211
HIERARCH ESO ISS PBL23 START 100.273
HIERARCH ESO ISS PBL23 END 99.13
HIERARCH ESO ISS PBLA23 START 70.3
HIERARCH ESO ISS PBLA23 END 70.1
HIERARCH ESO ISS PBL24 START 198.348
HIERARCH ESO ISS PBL24 END 198.742
HIERARCH ESO ISS PBLA24 START 26.806
HIERARCH ESO ISS PBLA24 END 27.01
HIERARCH ESO ISS PBL34 START 143.379
HIERARCH ESO ISS PBL34 END 143.321
HIERARCH ESO ISS PBLA34 START 358.007
HIERARCH ESO ISS PBLA34 END 358.821
HIERARCH ESO ISS AMBI TAU0 START 0.004725
HIERARCH ESO ISS AMBI TAU0 END 0.003601
HIERARCH ESO ISS AMBI TEMP 11.29
HIERARCH ESO ISS AMBI FWHM START 0.72
HIERARCH ESO ISS AMBI FWHM END 0.91