Exposure
ID
GRAVI.2025-09-19T23:59:08.196_1
Header ID
GRAVI.2025-09-19T23:59:08.196
Date updated
2025-09-20 00:10:52 UTC+0000
Release date
2025-09-19 23:59:08 UTC+0000
UTC Start
2025-09-19 23:59:08.196
UTC End
2025-09-20 00:01:48.196
MJD Start
60937.99940042
MJD End
60938.00125227185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0037660000000000003
Ambient temperature (°C)
14.21
Seeing (arcsec)
0.825
Observation
ID
70159
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
52058
Name
HD_174328
RA
282.627561
DEC
-13.5723
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 89.2250 89.0500 117.2000 117.4000
A0-J2 128.5490 128.3720 94.1000 94.3000
A0-K0 127.9360 127.8850 72.6710 72.8460
G1-J2 58.1990 58.2150 57.1000 57.3000
G1-K0 89.7160 89.7850 28.4630 28.7250
J2-K0 47.6340 47.6180 352.6470 352.9760
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 60937.99940042
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 174328
HIERARCH ESO INS SOBJ NAME HD_174328
RA 282.627561
DEC -13.5723
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 89.225
HIERARCH ESO ISS PBL12 END 89.05
HIERARCH ESO ISS PBLA12 START 117.2
HIERARCH ESO ISS PBLA12 END 117.4
HIERARCH ESO ISS PBL13 START 128.549
HIERARCH ESO ISS PBL13 END 128.372
HIERARCH ESO ISS PBLA13 START 94.1
HIERARCH ESO ISS PBLA13 END 94.3
HIERARCH ESO ISS PBL14 START 127.936
HIERARCH ESO ISS PBL14 END 127.885
HIERARCH ESO ISS PBLA14 START 72.671
HIERARCH ESO ISS PBLA14 END 72.846
HIERARCH ESO ISS PBL23 START 58.199
HIERARCH ESO ISS PBL23 END 58.215
HIERARCH ESO ISS PBLA23 START 57.1
HIERARCH ESO ISS PBLA23 END 57.3
HIERARCH ESO ISS PBL24 START 89.716
HIERARCH ESO ISS PBL24 END 89.785
HIERARCH ESO ISS PBLA24 START 28.463
HIERARCH ESO ISS PBLA24 END 28.725
HIERARCH ESO ISS PBL34 START 47.634
HIERARCH ESO ISS PBL34 END 47.618
HIERARCH ESO ISS PBLA34 START 352.647
HIERARCH ESO ISS PBLA34 END 352.976
HIERARCH ESO ISS AMBI TAU0 START 0.003774
HIERARCH ESO ISS AMBI TAU0 END 0.003758
HIERARCH ESO ISS AMBI TEMP 14.21
HIERARCH ESO ISS AMBI FWHM START 0.81
HIERARCH ESO ISS AMBI FWHM END 0.84