Exposure
ID
GRAVI.2025-05-23T07:06:46.499_1
Header ID
GRAVI.2025-05-23T07:06:46.499
Date updated
2025-05-23 07:21:16 UTC+0000
Release date
2026-05-23 07:21:16 UTC+0000
UTC Start
2025-05-23 07:06:46.499
UTC End
2025-05-23 07:09:58.499
MJD Start
60818.29637152
MJD End
60818.29859374223
Exposure time (s)
192.0
Validation level
1
Tau 0: Coherence time (s)
0.0047145
Ambient temperature (°C)
13.75
Seeing (arcsec)
0.485
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 68.2760 68.2180 272.2000 272.5000
K0-D0 95.9690 95.9780 251.9000 252.2000
K0-J3 55.8080 55.7430 333.5840 333.9640
G2-D0 39.7420 39.7810 215.4000 215.7000
G2-J3 64.2210 64.2810 42.5120 42.8160
D0-J3 103.7730 103.8730 39.7890 40.1000
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 60818.29637152
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 68.276
HIERARCH ESO ISS PBL12 END 68.218
HIERARCH ESO ISS PBLA12 START 272.2
HIERARCH ESO ISS PBLA12 END 272.5
HIERARCH ESO ISS PBL13 START 95.969
HIERARCH ESO ISS PBL13 END 95.978
HIERARCH ESO ISS PBLA13 START 251.9
HIERARCH ESO ISS PBLA13 END 252.2
HIERARCH ESO ISS PBL14 START 55.808
HIERARCH ESO ISS PBL14 END 55.743
HIERARCH ESO ISS PBLA14 START 333.584
HIERARCH ESO ISS PBLA14 END 333.964
HIERARCH ESO ISS PBL23 START 39.742
HIERARCH ESO ISS PBL23 END 39.781
HIERARCH ESO ISS PBLA23 START 215.4
HIERARCH ESO ISS PBLA23 END 215.7
HIERARCH ESO ISS PBL24 START 64.221
HIERARCH ESO ISS PBL24 END 64.281
HIERARCH ESO ISS PBLA24 START 42.512
HIERARCH ESO ISS PBLA24 END 42.816
HIERARCH ESO ISS PBL34 START 103.773
HIERARCH ESO ISS PBL34 END 103.873
HIERARCH ESO ISS PBLA34 START 39.789
HIERARCH ESO ISS PBLA34 END 40.1
HIERARCH ESO ISS AMBI TAU0 START 0.004331
HIERARCH ESO ISS AMBI TAU0 END 0.005098
HIERARCH ESO ISS AMBI TEMP 13.75
HIERARCH ESO ISS AMBI FWHM START 0.53
HIERARCH ESO ISS AMBI FWHM END 0.44