Exposure
ID
GRAVI.2025-08-23T03:45:56.621_1
Header ID
GRAVI.2025-08-23T03:45:56.621
Date updated
2025-08-23 03:55:49 UTC+0000
Release date
2025-08-23 03:45:56 UTC+0000
UTC Start
2025-08-23 03:45:56.621
UTC End
2025-08-23 03:48:36.621
MJD Start
60910.15690534
MJD End
60910.15875719186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0020215
Ambient temperature (°C)
2.97
Seeing (arcsec)
1.205
Observation
ID
70074
Category
calibrator
Program ID
115.282E.002
Program Title
CIRCUMSTELLAR ENVELOPES OF NEARBY CEPHEIDS WITH GRAVITY TO REFINE THE PERIOD-LUMINOSITY RELATION IN THE JWST ERA
Program Type
Normal
PI / COI
HOCDÉ / NARDETTO / GALLENNE / KERVELLA / PIETRZYNSKI / GIEREN / MÉRAND / BRAS / BAILLEUL / LEFTLEY / AFANASIEV
Target
ID
51989
Name
HD170887
RA
278.118737
DEC
-19.45211
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 B5 J2 J6
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-B5 46.6260 46.6020 171.8000 172.2000
A0-J2 103.7500 102.8560 108.7000 109.1000
A0-J6 163.8410 163.5160 36.6810 36.7740
B5-J2 92.4890 91.7210 82.0000 82.2000
B5-J6 199.6060 199.4340 27.1910 27.3410
J2-J6 164.7210 164.7210 359.8630 0.2480
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.002
HIERARCH ESO DPR CATG CALIB
HIERARCH ESO DPR TYPE STD,SINGLE
MJD-OBS 60910.15690534
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 171641
HIERARCH ESO INS SOBJ NAME HD170887
RA 278.118737
DEC -19.45211
HIERARCH ESO INS SPEC RES HIGH
HIERARCH ESO INS POLA MODE COMBINED
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 46.626
HIERARCH ESO ISS PBL12 END 46.602
HIERARCH ESO ISS PBLA12 START 171.8
HIERARCH ESO ISS PBLA12 END 172.2
HIERARCH ESO ISS PBL13 START 103.75
HIERARCH ESO ISS PBL13 END 102.856
HIERARCH ESO ISS PBLA13 START 108.7
HIERARCH ESO ISS PBLA13 END 109.1
HIERARCH ESO ISS PBL14 START 163.841
HIERARCH ESO ISS PBL14 END 163.516
HIERARCH ESO ISS PBLA14 START 36.681
HIERARCH ESO ISS PBLA14 END 36.774
HIERARCH ESO ISS PBL23 START 92.489
HIERARCH ESO ISS PBL23 END 91.721
HIERARCH ESO ISS PBLA23 START 82.0
HIERARCH ESO ISS PBLA23 END 82.2
HIERARCH ESO ISS PBL24 START 199.606
HIERARCH ESO ISS PBL24 END 199.434
HIERARCH ESO ISS PBLA24 START 27.191
HIERARCH ESO ISS PBLA24 END 27.341
HIERARCH ESO ISS PBL34 START 164.721
HIERARCH ESO ISS PBL34 END 164.721
HIERARCH ESO ISS PBLA34 START 359.863
HIERARCH ESO ISS PBLA34 END 0.248
HIERARCH ESO ISS AMBI TAU0 START 0.001989
HIERARCH ESO ISS AMBI TAU0 END 0.002054
HIERARCH ESO ISS AMBI TEMP 2.97
HIERARCH ESO ISS AMBI FWHM START 1.19
HIERARCH ESO ISS AMBI FWHM END 1.22