Exposure
ID
GRAVI.2025-04-05T05:52:19.292_1
Header ID
GRAVI.2025-04-05T05:52:19.292
Date updated
2025-04-05 06:05:49 UTC+0000
Release date
2026-04-05 06:05:49 UTC+0000
UTC Start
2025-04-05 05:52:19.292
UTC End
2025-04-05 05:55:31.292
MJD Start
60770.24466773
MJD End
60770.24688995223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.008647
Ambient temperature (°C)
14.37
Seeing (arcsec)
0.455
Observation
ID
66044
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
49163
Name
V774_Sgr
RA
268.606471
DEC
-23.23601
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B2 D0 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B2 20.3780 20.5440 131.3000 131.2000
A0-D0 23.3720 23.5490 32.6000 33.6000
A0-C1 14.6090 14.8610 99.4660 99.6680
B2-D0 33.2310 33.2230 355.3000 355.8000
B2-C1 11.0710 11.0680 355.2700 355.8110
D0-C1 22.1600 22.1550 175.3100 175.8530
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 60770.24466773
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME V V774 Sgr
HIERARCH ESO INS SOBJ NAME V774_Sgr
RA 268.606471
DEC -23.23601
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 B2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 20.378
HIERARCH ESO ISS PBL12 END 20.544
HIERARCH ESO ISS PBLA12 START 131.3
HIERARCH ESO ISS PBLA12 END 131.2
HIERARCH ESO ISS PBL13 START 23.372
HIERARCH ESO ISS PBL13 END 23.549
HIERARCH ESO ISS PBLA13 START 32.6
HIERARCH ESO ISS PBLA13 END 33.6
HIERARCH ESO ISS PBL14 START 14.609
HIERARCH ESO ISS PBL14 END 14.861
HIERARCH ESO ISS PBLA14 START 99.466
HIERARCH ESO ISS PBLA14 END 99.668
HIERARCH ESO ISS PBL23 START 33.231
HIERARCH ESO ISS PBL23 END 33.223
HIERARCH ESO ISS PBLA23 START 355.3
HIERARCH ESO ISS PBLA23 END 355.8
HIERARCH ESO ISS PBL24 START 11.071
HIERARCH ESO ISS PBL24 END 11.068
HIERARCH ESO ISS PBLA24 START 355.27
HIERARCH ESO ISS PBLA24 END 355.811
HIERARCH ESO ISS PBL34 START 22.16
HIERARCH ESO ISS PBL34 END 22.155
HIERARCH ESO ISS PBLA34 START 175.31
HIERARCH ESO ISS PBLA34 END 175.853
HIERARCH ESO ISS AMBI TAU0 START 0.009422
HIERARCH ESO ISS AMBI TAU0 END 0.007872
HIERARCH ESO ISS AMBI TEMP 14.37
HIERARCH ESO ISS AMBI FWHM START 0.37
HIERARCH ESO ISS AMBI FWHM END 0.54