Exposure
ID
GRAVI.2025-06-24T02:54:42.819_1
Header ID
GRAVI.2025-06-24T02:54:42.819
Date updated
2025-06-24 03:05:47 UTC+0000
Release date
2026-06-24 03:05:47 UTC+0000
UTC Start
2025-06-24 02:54:42.819
UTC End
2025-06-24 02:57:54.819
MJD Start
60850.12132892
MJD End
60850.12355114223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.00393
Ambient temperature (°C)
11.2
Seeing (arcsec)
0.62
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 24.6490 24.7070 135.0000 135.2000
A0-D0 30.0970 30.2350 60.2000 60.7000
A0-C1 21.3720 21.4740 108.0840 108.3580
B2-D0 33.5360 33.5560 15.0000 15.5000
B2-C1 11.1720 11.1780 14.9570 15.4460
D0-C1 22.3640 22.3780 195.0180 195.5070
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 60850.12132892
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 24.649
HIERARCH ESO ISS PBL12 END 24.707
HIERARCH ESO ISS PBLA12 START 135.0
HIERARCH ESO ISS PBLA12 END 135.2
HIERARCH ESO ISS PBL13 START 30.097
HIERARCH ESO ISS PBL13 END 30.235
HIERARCH ESO ISS PBLA13 START 60.2
HIERARCH ESO ISS PBLA13 END 60.7
HIERARCH ESO ISS PBL14 START 21.372
HIERARCH ESO ISS PBL14 END 21.474
HIERARCH ESO ISS PBLA14 START 108.084
HIERARCH ESO ISS PBLA14 END 108.358
HIERARCH ESO ISS PBL23 START 33.536
HIERARCH ESO ISS PBL23 END 33.556
HIERARCH ESO ISS PBLA23 START 15.0
HIERARCH ESO ISS PBLA23 END 15.5
HIERARCH ESO ISS PBL24 START 11.172
HIERARCH ESO ISS PBL24 END 11.178
HIERARCH ESO ISS PBLA24 START 14.957
HIERARCH ESO ISS PBLA24 END 15.446
HIERARCH ESO ISS PBL34 START 22.364
HIERARCH ESO ISS PBL34 END 22.378
HIERARCH ESO ISS PBLA34 START 195.018
HIERARCH ESO ISS PBLA34 END 195.507
HIERARCH ESO ISS AMBI TAU0 START 0.004171
HIERARCH ESO ISS AMBI TAU0 END 0.003689
HIERARCH ESO ISS AMBI TEMP 11.2
HIERARCH ESO ISS AMBI FWHM START 0.66
HIERARCH ESO ISS AMBI FWHM END 0.58