Exposure
ID
GRAVI.2025-08-24T04:20:06.514_1
Header ID
GRAVI.2025-08-24T04:20:06.514
Date updated
2025-08-24 04:30:55 UTC+0000
Release date
2025-08-24 04:20:06 UTC+0000
UTC Start
2025-08-24 04:20:06.514
UTC End
2025-08-24 04:22:46.514
MJD Start
60911.18063095
MJD End
60911.18248280186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003107
Ambient temperature (°C)
4.3
Seeing (arcsec)
0.85
Observation
ID
70097
Category
calibrator
Program ID
115.27VK.001
Program Title
UNVEILING THE MASS-LOSS PROCESS OF RED SUPERGIANTS: THE VARIABILITY ACROSS THE MOLECULAR LAYERS AND THE PHOTOSPHERE
Program Type
Normal
PI / COI
JADLOVSKY / WITTKOWSKI / CHIAVASSA / KRAVCHENKO / GONZÁLEZ-TORÀ / KRTICKA / PALADINI / HÖFNER / FREYTAG
Target
ID
52010
Name
HD_168000
RA
274.599344
DEC
-17.53439
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 45.8910 45.8910 179.9000 180.4000
A0-J2 85.1170 84.0290 115.6000 116.2000
A0-J6 158.3730 157.9120 37.2240 37.2280
B5-J2 77.2560 76.2540 83.2000 83.4000
B5-J6 196.8610 196.5880 29.1050 29.1860
J2-J6 164.0000 164.0530 6.6620 7.0410
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27VK.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60911.18063095
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 168000
HIERARCH ESO INS SOBJ NAME HD_168000
RA 274.599344
DEC -17.53439
HIERARCH ESO INS SPEC RES HIGH
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 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 45.891
HIERARCH ESO ISS PBL12 END 45.891
HIERARCH ESO ISS PBLA12 START 179.9
HIERARCH ESO ISS PBLA12 END 180.4
HIERARCH ESO ISS PBL13 START 85.117
HIERARCH ESO ISS PBL13 END 84.029
HIERARCH ESO ISS PBLA13 START 115.6
HIERARCH ESO ISS PBLA13 END 116.2
HIERARCH ESO ISS PBL14 START 158.373
HIERARCH ESO ISS PBL14 END 157.912
HIERARCH ESO ISS PBLA14 START 37.224
HIERARCH ESO ISS PBLA14 END 37.228
HIERARCH ESO ISS PBL23 START 77.256
HIERARCH ESO ISS PBL23 END 76.254
HIERARCH ESO ISS PBLA23 START 83.2
HIERARCH ESO ISS PBLA23 END 83.4
HIERARCH ESO ISS PBL24 START 196.861
HIERARCH ESO ISS PBL24 END 196.588
HIERARCH ESO ISS PBLA24 START 29.105
HIERARCH ESO ISS PBLA24 END 29.186
HIERARCH ESO ISS PBL34 START 164.0
HIERARCH ESO ISS PBL34 END 164.053
HIERARCH ESO ISS PBLA34 START 6.662
HIERARCH ESO ISS PBLA34 END 7.041
HIERARCH ESO ISS AMBI TAU0 START 0.003107
HIERARCH ESO ISS AMBI TAU0 END 0.003107
HIERARCH ESO ISS AMBI TEMP 4.3
HIERARCH ESO ISS AMBI FWHM START 0.87
HIERARCH ESO ISS AMBI FWHM END 0.83