Exposure
ID
GRAVI.2025-06-18T04:44:35.997_1
Header ID
GRAVI.2025-06-18T04:44:35.997
Date updated
2025-06-18 04:55:49 UTC+0000
Release date
2025-06-18 04:44:35 UTC+0000
UTC Start
2025-06-18 04:44:35.997
UTC End
2025-06-18 04:47:15.997
MJD Start
60844.19763885
MJD End
60844.19949070185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002356
Ambient temperature (°C)
6.66
Seeing (arcsec)
0.835
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 90.3470 90.4020 113.6000 113.8000
A0-J2 128.3170 128.4970 90.5000 90.8000
A0-K0 126.3870 126.6100 68.6460 68.9090
G1-J2 57.3670 57.4620 52.5000 52.8000
G1-K0 89.2750 89.3460 23.0180 23.3460
J2-K0 48.4160 48.4030 347.3510 347.6430
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 60844.19763885
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 90.347
HIERARCH ESO ISS PBL12 END 90.402
HIERARCH ESO ISS PBLA12 START 113.6
HIERARCH ESO ISS PBLA12 END 113.8
HIERARCH ESO ISS PBL13 START 128.317
HIERARCH ESO ISS PBL13 END 128.497
HIERARCH ESO ISS PBLA13 START 90.5
HIERARCH ESO ISS PBLA13 END 90.8
HIERARCH ESO ISS PBL14 START 126.387
HIERARCH ESO ISS PBL14 END 126.61
HIERARCH ESO ISS PBLA14 START 68.646
HIERARCH ESO ISS PBLA14 END 68.909
HIERARCH ESO ISS PBL23 START 57.367
HIERARCH ESO ISS PBL23 END 57.462
HIERARCH ESO ISS PBLA23 START 52.5
HIERARCH ESO ISS PBLA23 END 52.8
HIERARCH ESO ISS PBL24 START 89.275
HIERARCH ESO ISS PBL24 END 89.346
HIERARCH ESO ISS PBLA24 START 23.018
HIERARCH ESO ISS PBLA24 END 23.346
HIERARCH ESO ISS PBL34 START 48.416
HIERARCH ESO ISS PBL34 END 48.403
HIERARCH ESO ISS PBLA34 START 347.351
HIERARCH ESO ISS PBLA34 END 347.643
HIERARCH ESO ISS AMBI TAU0 START 0.002618
HIERARCH ESO ISS AMBI TAU0 END 0.002094
HIERARCH ESO ISS AMBI TEMP 6.66
HIERARCH ESO ISS AMBI FWHM START 0.82
HIERARCH ESO ISS AMBI FWHM END 0.85