Exposure
ID
GRAVI.2025-06-21T05:33:52.422_1
Header ID
GRAVI.2025-06-21T05:33:52.422
Date updated
2025-06-21 05:45:57 UTC+0000
Release date
2026-06-21 05:45:57 UTC+0000
UTC Start
2025-06-21 05:33:52.422
UTC End
2025-06-21 05:37:04.422
MJD Start
60847.23185674
MJD End
60847.234078962225
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.004268
Ambient temperature (°C)
12.36
Seeing (arcsec)
0.675
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 67.7260 67.5750 273.6000 273.9000
K0-D0 95.7310 95.6170 253.3000 253.5000
K0-J3 55.4160 55.3430 335.8320 336.2460
G2-D0 39.9200 39.9400 217.1000 217.4000
G2-J3 64.4720 64.4910 44.1440 44.4070
D0-J3 104.2070 104.2480 41.4630 41.7330
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 60847.23185674
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 67.726
HIERARCH ESO ISS PBL12 END 67.575
HIERARCH ESO ISS PBLA12 START 273.6
HIERARCH ESO ISS PBLA12 END 273.9
HIERARCH ESO ISS PBL13 START 95.731
HIERARCH ESO ISS PBL13 END 95.617
HIERARCH ESO ISS PBLA13 START 253.3
HIERARCH ESO ISS PBLA13 END 253.5
HIERARCH ESO ISS PBL14 START 55.416
HIERARCH ESO ISS PBL14 END 55.343
HIERARCH ESO ISS PBLA14 START 335.832
HIERARCH ESO ISS PBLA14 END 336.246
HIERARCH ESO ISS PBL23 START 39.92
HIERARCH ESO ISS PBL23 END 39.94
HIERARCH ESO ISS PBLA23 START 217.1
HIERARCH ESO ISS PBLA23 END 217.4
HIERARCH ESO ISS PBL24 START 64.472
HIERARCH ESO ISS PBL24 END 64.491
HIERARCH ESO ISS PBLA24 START 44.144
HIERARCH ESO ISS PBLA24 END 44.407
HIERARCH ESO ISS PBL34 START 104.207
HIERARCH ESO ISS PBL34 END 104.248
HIERARCH ESO ISS PBLA34 START 41.463
HIERARCH ESO ISS PBLA34 END 41.733
HIERARCH ESO ISS AMBI TAU0 START 0.004462
HIERARCH ESO ISS AMBI TAU0 END 0.004074
HIERARCH ESO ISS AMBI TEMP 12.36
HIERARCH ESO ISS AMBI FWHM START 0.61
HIERARCH ESO ISS AMBI FWHM END 0.74