Exposure
ID
GRAVI.2025-06-18T04:37:47.980_1
Header ID
GRAVI.2025-06-18T04:37:47.980
Date updated
2025-06-18 04:45:55 UTC+0000
Release date
2025-06-18 04:37:47 UTC+0000
UTC Start
2025-06-18 04:37:47.980
UTC End
2025-06-18 04:40:27.980
MJD Start
60844.19291643
MJD End
60844.19476828186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002518
Ambient temperature (°C)
6.56
Seeing (arcsec)
0.94
Observation
ID
67033
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
49841
Name
HD_168000
RA
274.598179
DEC
-17.53439
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 K0
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 90.1750 90.2570 113.1000 113.3000
A0-J2 127.8280 128.0530 90.0000 90.3000
A0-K0 125.8110 126.0710 68.0260 68.2970
G1-J2 57.1290 57.2350 51.8000 52.1000
G1-K0 89.1090 89.1810 22.2450 22.5820
J2-K0 48.4460 48.4330 346.6850 346.9720
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 60844.19291643
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 168000
HIERARCH ESO INS SOBJ NAME HD_168000
RA 274.598179
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 K0
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 90.175
HIERARCH ESO ISS PBL12 END 90.257
HIERARCH ESO ISS PBLA12 START 113.1
HIERARCH ESO ISS PBLA12 END 113.3
HIERARCH ESO ISS PBL13 START 127.828
HIERARCH ESO ISS PBL13 END 128.053
HIERARCH ESO ISS PBLA13 START 90.0
HIERARCH ESO ISS PBLA13 END 90.3
HIERARCH ESO ISS PBL14 START 125.811
HIERARCH ESO ISS PBL14 END 126.071
HIERARCH ESO ISS PBLA14 START 68.026
HIERARCH ESO ISS PBLA14 END 68.297
HIERARCH ESO ISS PBL23 START 57.129
HIERARCH ESO ISS PBL23 END 57.235
HIERARCH ESO ISS PBLA23 START 51.8
HIERARCH ESO ISS PBLA23 END 52.1
HIERARCH ESO ISS PBL24 START 89.109
HIERARCH ESO ISS PBL24 END 89.181
HIERARCH ESO ISS PBLA24 START 22.245
HIERARCH ESO ISS PBLA24 END 22.582
HIERARCH ESO ISS PBL34 START 48.446
HIERARCH ESO ISS PBL34 END 48.433
HIERARCH ESO ISS PBLA34 START 346.685
HIERARCH ESO ISS PBLA34 END 346.972
HIERARCH ESO ISS AMBI TAU0 START 0.002345
HIERARCH ESO ISS AMBI TAU0 END 0.002691
HIERARCH ESO ISS AMBI TEMP 6.56
HIERARCH ESO ISS AMBI FWHM START 1.04
HIERARCH ESO ISS AMBI FWHM END 0.84