Exposure
ID
GRAVI.2025-06-24T02:46:27.798_1
Header ID
GRAVI.2025-06-24T02:46:27.798
Date updated
2025-06-24 02:55:52 UTC+0000
Release date
2026-06-24 02:55:52 UTC+0000
UTC Start
2025-06-24 02:46:27.798
UTC End
2025-06-24 02:49:39.798
MJD Start
60850.11559951
MJD End
60850.11782173222
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.003837
Ambient temperature (°C)
11.25
Seeing (arcsec)
0.585
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 24.5070 24.5720 134.5000 134.7000
A0-D0 29.7730 29.9210 59.0000 59.5000
A0-C1 21.1260 21.2390 107.4780 107.7480
B2-D0 33.4920 33.5110 13.9000 14.4000
B2-C1 11.1570 11.1630 13.8470 14.3460
D0-C1 22.3350 22.3480 193.9070 194.4060
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 60850.11559951
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 24.507
HIERARCH ESO ISS PBL12 END 24.572
HIERARCH ESO ISS PBLA12 START 134.5
HIERARCH ESO ISS PBLA12 END 134.7
HIERARCH ESO ISS PBL13 START 29.773
HIERARCH ESO ISS PBL13 END 29.921
HIERARCH ESO ISS PBLA13 START 59.0
HIERARCH ESO ISS PBLA13 END 59.5
HIERARCH ESO ISS PBL14 START 21.126
HIERARCH ESO ISS PBL14 END 21.239
HIERARCH ESO ISS PBLA14 START 107.478
HIERARCH ESO ISS PBLA14 END 107.748
HIERARCH ESO ISS PBL23 START 33.492
HIERARCH ESO ISS PBL23 END 33.511
HIERARCH ESO ISS PBLA23 START 13.9
HIERARCH ESO ISS PBLA23 END 14.4
HIERARCH ESO ISS PBL24 START 11.157
HIERARCH ESO ISS PBL24 END 11.163
HIERARCH ESO ISS PBLA24 START 13.847
HIERARCH ESO ISS PBLA24 END 14.346
HIERARCH ESO ISS PBL34 START 22.335
HIERARCH ESO ISS PBL34 END 22.348
HIERARCH ESO ISS PBLA34 START 193.907
HIERARCH ESO ISS PBLA34 END 194.406
HIERARCH ESO ISS AMBI TAU0 START 0.003767
HIERARCH ESO ISS AMBI TAU0 END 0.003907
HIERARCH ESO ISS AMBI TEMP 11.25
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.6