Exposure
ID
GRAVI.2025-06-24T02:38:15.777_1
Header ID
GRAVI.2025-06-24T02:38:15.777
Date updated
2025-06-24 02:51:03 UTC+0000
Release date
2026-06-24 02:51:02 UTC+0000
UTC Start
2025-06-24 02:38:15.777
UTC End
2025-06-24 02:41:27.777
MJD Start
60850.10990483
MJD End
60850.11212705223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0045435
Ambient temperature (°C)
11.21
Seeing (arcsec)
0.605
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 24.3530 24.4240 134.0000 134.2000
A0-D0 29.4330 29.5890 57.8000 58.3000
A0-C1 20.8620 20.9840 106.8940 107.1560
B2-D0 33.4490 33.4680 12.8000 13.3000
B2-C1 11.1430 11.1490 12.7340 13.2380
D0-C1 22.3070 22.3190 192.7930 193.2980
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 60850.10990483
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 24.353
HIERARCH ESO ISS PBL12 END 24.424
HIERARCH ESO ISS PBLA12 START 134.0
HIERARCH ESO ISS PBLA12 END 134.2
HIERARCH ESO ISS PBL13 START 29.433
HIERARCH ESO ISS PBL13 END 29.589
HIERARCH ESO ISS PBLA13 START 57.8
HIERARCH ESO ISS PBLA13 END 58.3
HIERARCH ESO ISS PBL14 START 20.862
HIERARCH ESO ISS PBL14 END 20.984
HIERARCH ESO ISS PBLA14 START 106.894
HIERARCH ESO ISS PBLA14 END 107.156
HIERARCH ESO ISS PBL23 START 33.449
HIERARCH ESO ISS PBL23 END 33.468
HIERARCH ESO ISS PBLA23 START 12.8
HIERARCH ESO ISS PBLA23 END 13.3
HIERARCH ESO ISS PBL24 START 11.143
HIERARCH ESO ISS PBL24 END 11.149
HIERARCH ESO ISS PBLA24 START 12.734
HIERARCH ESO ISS PBLA24 END 13.238
HIERARCH ESO ISS PBL34 START 22.307
HIERARCH ESO ISS PBL34 END 22.319
HIERARCH ESO ISS PBLA34 START 192.793
HIERARCH ESO ISS PBLA34 END 193.298
HIERARCH ESO ISS AMBI TAU0 START 0.004787
HIERARCH ESO ISS AMBI TAU0 END 0.0043
HIERARCH ESO ISS AMBI TEMP 11.21
HIERARCH ESO ISS AMBI FWHM START 0.67
HIERARCH ESO ISS AMBI FWHM END 0.54