Exposure
ID
GRAVI.2025-08-26T00:11:57.318_1
Header ID
GRAVI.2025-08-26T00:11:57.318
Date updated
2025-08-26 00:25:56 UTC+0000
Release date
2025-08-26 00:11:57 UTC+0000
UTC Start
2025-08-26 00:11:57.318
UTC End
2025-08-26 00:15:57.318
MJD Start
60913.00830229
MJD End
60913.01108006778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.0035915
Ambient temperature (°C)
12.48
Seeing (arcsec)
0.78
Observation
ID
70092
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
52005
Name
HD176651
RA
285.304198
DEC
2.03329
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 47.4130 47.2920 144.3000 144.5000
A0-J2 123.4340 124.1230 93.3000 93.3000
A0-J6 144.5660 145.1460 20.4020 20.9710
B5-J2 100.5920 101.4460 71.8000 72.0000
B5-J6 175.4980 175.7470 7.4480 8.0080
J2-J6 160.1760 159.7450 332.9570 333.2230
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 60913.00830229
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 176651
HIERARCH ESO INS SOBJ NAME HD176651
RA 285.304198
DEC 2.03329
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 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 47.413
HIERARCH ESO ISS PBL12 END 47.292
HIERARCH ESO ISS PBLA12 START 144.3
HIERARCH ESO ISS PBLA12 END 144.5
HIERARCH ESO ISS PBL13 START 123.434
HIERARCH ESO ISS PBL13 END 124.123
HIERARCH ESO ISS PBLA13 START 93.3
HIERARCH ESO ISS PBLA13 END 93.3
HIERARCH ESO ISS PBL14 START 144.566
HIERARCH ESO ISS PBL14 END 145.146
HIERARCH ESO ISS PBLA14 START 20.402
HIERARCH ESO ISS PBLA14 END 20.971
HIERARCH ESO ISS PBL23 START 100.592
HIERARCH ESO ISS PBL23 END 101.446
HIERARCH ESO ISS PBLA23 START 71.8
HIERARCH ESO ISS PBLA23 END 72.0
HIERARCH ESO ISS PBL24 START 175.498
HIERARCH ESO ISS PBL24 END 175.747
HIERARCH ESO ISS PBLA24 START 7.448
HIERARCH ESO ISS PBLA24 END 8.008
HIERARCH ESO ISS PBL34 START 160.176
HIERARCH ESO ISS PBL34 END 159.745
HIERARCH ESO ISS PBLA34 START 332.957
HIERARCH ESO ISS PBLA34 END 333.223
HIERARCH ESO ISS AMBI TAU0 START 0.003305
HIERARCH ESO ISS AMBI TAU0 END 0.003878
HIERARCH ESO ISS AMBI TEMP 12.48
HIERARCH ESO ISS AMBI FWHM START 0.81
HIERARCH ESO ISS AMBI FWHM END 0.75