Exposure
ID
GRAVI.2025-08-28T01:51:21.331_1
Header ID
GRAVI.2025-08-28T01:51:21.331
Date updated
2025-08-28 02:00:55 UTC+0000
Release date
2025-08-28 01:51:21 UTC+0000
UTC Start
2025-08-28 01:51:21.331
UTC End
2025-08-28 01:54:01.331
MJD Start
60915.07733022
MJD End
60915.07918207186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.00219
Ambient temperature (°C)
12.32
Seeing (arcsec)
1.645
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 47.2640 47.2150 160.1000 160.5000
A0-J2 122.6510 122.1500 98.9000 99.1000
A0-J6 169.5240 169.4700 32.5030 32.6960
B5-J2 108.1250 107.7710 76.4000 76.5000
B5-J6 201.8470 201.8630 21.8060 22.0390
J2-J6 164.6650 164.5910 349.4680 349.8300
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 60915.07733022
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 47.264
HIERARCH ESO ISS PBL12 END 47.215
HIERARCH ESO ISS PBLA12 START 160.1
HIERARCH ESO ISS PBLA12 END 160.5
HIERARCH ESO ISS PBL13 START 122.651
HIERARCH ESO ISS PBL13 END 122.15
HIERARCH ESO ISS PBLA13 START 98.9
HIERARCH ESO ISS PBLA13 END 99.1
HIERARCH ESO ISS PBL14 START 169.524
HIERARCH ESO ISS PBL14 END 169.47
HIERARCH ESO ISS PBLA14 START 32.503
HIERARCH ESO ISS PBLA14 END 32.696
HIERARCH ESO ISS PBL23 START 108.125
HIERARCH ESO ISS PBL23 END 107.771
HIERARCH ESO ISS PBLA23 START 76.4
HIERARCH ESO ISS PBLA23 END 76.5
HIERARCH ESO ISS PBL24 START 201.847
HIERARCH ESO ISS PBL24 END 201.863
HIERARCH ESO ISS PBLA24 START 21.806
HIERARCH ESO ISS PBLA24 END 22.039
HIERARCH ESO ISS PBL34 START 164.665
HIERARCH ESO ISS PBL34 END 164.591
HIERARCH ESO ISS PBLA34 START 349.468
HIERARCH ESO ISS PBLA34 END 349.83
HIERARCH ESO ISS AMBI TAU0 START 0.002098
HIERARCH ESO ISS AMBI TAU0 END 0.002282
HIERARCH ESO ISS AMBI TEMP 12.32
HIERARCH ESO ISS AMBI FWHM START 1.8
HIERARCH ESO ISS AMBI FWHM END 1.49