Exposure
ID
GRAVI.2025-08-28T01:41:18.306_1
Header ID
GRAVI.2025-08-28T01:41:18.306
Date updated
2025-08-28 01:51:01 UTC+0000
Release date
2025-08-28 01:41:18 UTC+0000
UTC Start
2025-08-28 01:41:18.306
UTC End
2025-08-28 01:43:58.306
MJD Start
60915.07035076
MJD End
60915.07220261185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002355
Ambient temperature (°C)
12.46
Seeing (arcsec)
1.35
Observation
ID
70097
Category
calibrator
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
52010
Name
HD_168000
RA
274.599344
DEC
-17.53439
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-SPLIT
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 47.4290 47.3800 158.8000 159.2000
A0-J2 124.2320 123.7890 98.0000 98.3000
A0-J6 169.6500 169.6220 31.8130 32.0250
B5-J2 109.2200 108.9170 75.7000 75.9000
B5-J6 201.7630 201.7920 20.9870 21.2360
J2-J6 164.9270 164.8480 348.2470 348.6080
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.27VK.001
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60915.07035076
HIERARCH ESO DPR TECH INTERFEROMETRY,WOLLASTON
HIERARCH ESO OBS TARG NAME HD 168000
HIERARCH ESO INS SOBJ NAME HD_168000
RA 274.599344
DEC -17.53439
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 B5
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 J6
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 47.429
HIERARCH ESO ISS PBL12 END 47.38
HIERARCH ESO ISS PBLA12 START 158.8
HIERARCH ESO ISS PBLA12 END 159.2
HIERARCH ESO ISS PBL13 START 124.232
HIERARCH ESO ISS PBL13 END 123.789
HIERARCH ESO ISS PBLA13 START 98.0
HIERARCH ESO ISS PBLA13 END 98.3
HIERARCH ESO ISS PBL14 START 169.65
HIERARCH ESO ISS PBL14 END 169.622
HIERARCH ESO ISS PBLA14 START 31.813
HIERARCH ESO ISS PBLA14 END 32.025
HIERARCH ESO ISS PBL23 START 109.22
HIERARCH ESO ISS PBL23 END 108.917
HIERARCH ESO ISS PBLA23 START 75.7
HIERARCH ESO ISS PBLA23 END 75.9
HIERARCH ESO ISS PBL24 START 201.763
HIERARCH ESO ISS PBL24 END 201.792
HIERARCH ESO ISS PBLA24 START 20.987
HIERARCH ESO ISS PBLA24 END 21.236
HIERARCH ESO ISS PBL34 START 164.927
HIERARCH ESO ISS PBL34 END 164.848
HIERARCH ESO ISS PBLA34 START 348.247
HIERARCH ESO ISS PBLA34 END 348.608
HIERARCH ESO ISS AMBI TAU0 START 0.002355
HIERARCH ESO ISS AMBI TAU0 END 0.002355
HIERARCH ESO ISS AMBI TEMP 12.46
HIERARCH ESO ISS AMBI FWHM START 1.35
HIERARCH ESO ISS AMBI FWHM END 1.35