Exposure
ID
GRAVI.2025-06-21T05:42:04.444_1
Header ID
GRAVI.2025-06-21T05:42:04.444
Date updated
2025-06-21 05:55:46 UTC+0000
Release date
2026-06-21 05:55:46 UTC+0000
UTC Start
2025-06-21 05:42:04.444
UTC End
2025-06-21 05:45:16.444
MJD Start
60847.23755143
MJD End
60847.239773652225
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0040680000000000004
Ambient temperature (°C)
12.4
Seeing (arcsec)
0.605
Observation
ID
67545
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
50235
Name
BD-154915
RA
274.607228
DEC
-15.30366
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
K0 G2 D0 J3
Projected baselines
Baseline Length start Length end Angle start Angle end
K0-G2 67.3690 67.1820 274.2000 274.5000
K0-D0 95.4510 95.2900 253.8000 254.0000
K0-J3 55.2540 55.1790 336.7560 337.1840
G2-D0 39.9600 39.9720 217.7000 218.0000
G2-J3 64.5050 64.5070 44.7150 44.9620
D0-J3 104.2820 104.2980 42.0500 42.3050
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 60847.23755143
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME BD-15 4915
HIERARCH ESO INS SOBJ NAME BD-154915
RA 274.607228
DEC -15.30366
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE SPLIT
HIERARCH ESO ISS CONF NTEL 4
HIERARCH ESO ISS CONF STATION1 K0
HIERARCH ESO ISS CONF STATION2 G2
HIERARCH ESO ISS CONF STATION3 D0
HIERARCH ESO ISS CONF STATION4 J3
EXPTIME 222.0
HIERARCH ESO DET2 SEQ1 DIT 3.0
HIERARCH ESO DET2 NDIT 64
HIERARCH ESO ISS PBL12 START 67.369
HIERARCH ESO ISS PBL12 END 67.182
HIERARCH ESO ISS PBLA12 START 274.2
HIERARCH ESO ISS PBLA12 END 274.5
HIERARCH ESO ISS PBL13 START 95.451
HIERARCH ESO ISS PBL13 END 95.29
HIERARCH ESO ISS PBLA13 START 253.8
HIERARCH ESO ISS PBLA13 END 254.0
HIERARCH ESO ISS PBL14 START 55.254
HIERARCH ESO ISS PBL14 END 55.179
HIERARCH ESO ISS PBLA14 START 336.756
HIERARCH ESO ISS PBLA14 END 337.184
HIERARCH ESO ISS PBL23 START 39.96
HIERARCH ESO ISS PBL23 END 39.972
HIERARCH ESO ISS PBLA23 START 217.7
HIERARCH ESO ISS PBLA23 END 218.0
HIERARCH ESO ISS PBL24 START 64.505
HIERARCH ESO ISS PBL24 END 64.507
HIERARCH ESO ISS PBLA24 START 44.715
HIERARCH ESO ISS PBLA24 END 44.962
HIERARCH ESO ISS PBL34 START 104.282
HIERARCH ESO ISS PBL34 END 104.298
HIERARCH ESO ISS PBLA34 START 42.05
HIERARCH ESO ISS PBLA34 END 42.305
HIERARCH ESO ISS AMBI TAU0 START 0.003947
HIERARCH ESO ISS AMBI TAU0 END 0.004189
HIERARCH ESO ISS AMBI TEMP 12.4
HIERARCH ESO ISS AMBI FWHM START 0.57
HIERARCH ESO ISS AMBI FWHM END 0.64