Exposure
ID
GRAVI.2025-05-26T03:58:29.230_1
Header ID
GRAVI.2025-05-26T03:58:29.230
Date updated
2025-05-26 04:11:28 UTC+0000
Release date
2026-05-26 04:11:28 UTC+0000
UTC Start
2025-05-26 03:58:29.230
UTC End
2025-05-26 04:01:09.230
MJD Start
60821.16561609
MJD End
60821.16746794186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0033835000000000002
Ambient temperature (°C)
11.95
Seeing (arcsec)
0.685
Observation
ID
67042
Category
science
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
49850
Name
HD_155666
RA
258.625321
DEC
-34.80753
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 82.3780 82.7610 102.5000 102.9000
A0-J2 120.1800 120.6650 77.5000 78.0000
A0-K0 123.2440 123.5400 55.3260 55.8450
G1-J2 57.3580 57.4250 40.0000 40.6000
G1-K0 90.4340 90.4270 13.3890 13.7940
J2-K0 46.8730 46.9200 340.0870 340.3540
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27VK.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60821.16561609
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 155666
HIERARCH ESO INS SOBJ NAME HD_155666
RA 258.625321
DEC -34.80753
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 82.378
HIERARCH ESO ISS PBL12 END 82.761
HIERARCH ESO ISS PBLA12 START 102.5
HIERARCH ESO ISS PBLA12 END 102.9
HIERARCH ESO ISS PBL13 START 120.18
HIERARCH ESO ISS PBL13 END 120.665
HIERARCH ESO ISS PBLA13 START 77.5
HIERARCH ESO ISS PBLA13 END 78.0
HIERARCH ESO ISS PBL14 START 123.244
HIERARCH ESO ISS PBL14 END 123.54
HIERARCH ESO ISS PBLA14 START 55.326
HIERARCH ESO ISS PBLA14 END 55.845
HIERARCH ESO ISS PBL23 START 57.358
HIERARCH ESO ISS PBL23 END 57.425
HIERARCH ESO ISS PBLA23 START 40.0
HIERARCH ESO ISS PBLA23 END 40.6
HIERARCH ESO ISS PBL24 START 90.434
HIERARCH ESO ISS PBL24 END 90.427
HIERARCH ESO ISS PBLA24 START 13.389
HIERARCH ESO ISS PBLA24 END 13.794
HIERARCH ESO ISS PBL34 START 46.873
HIERARCH ESO ISS PBL34 END 46.92
HIERARCH ESO ISS PBLA34 START 340.087
HIERARCH ESO ISS PBLA34 END 340.354
HIERARCH ESO ISS AMBI TAU0 START 0.003698
HIERARCH ESO ISS AMBI TAU0 END 0.003069
HIERARCH ESO ISS AMBI TEMP 11.95
HIERARCH ESO ISS AMBI FWHM START 0.6
HIERARCH ESO ISS AMBI FWHM END 0.77