Exposure
ID
GRAVI.2025-08-23T03:55:50.646_1
Header ID
GRAVI.2025-08-23T03:55:50.646
Date updated
2025-08-23 04:06:26 UTC+0000
Release date
2025-08-23 03:55:50 UTC+0000
UTC Start
2025-08-23 03:55:50.646
UTC End
2025-08-23 03:58:30.646
MJD Start
60910.16378063
MJD End
60910.165632481854
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.002692
Ambient temperature (°C)
2.98
Seeing (arcsec)
0.855
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 46.5520 46.5320 173.3000 173.8000
A0-J2 100.7010 99.7660 110.2000 110.6000
A0-J6 162.7090 162.3500 36.9780 37.0570
B5-J2 89.8540 89.0360 82.6000 82.8000
B5-J6 199.0000 198.8020 27.6830 27.8220
J2-J6 164.7330 164.7420 1.1570 1.5440
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 60910.16378063
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 46.552
HIERARCH ESO ISS PBL12 END 46.532
HIERARCH ESO ISS PBLA12 START 173.3
HIERARCH ESO ISS PBLA12 END 173.8
HIERARCH ESO ISS PBL13 START 100.701
HIERARCH ESO ISS PBL13 END 99.766
HIERARCH ESO ISS PBLA13 START 110.2
HIERARCH ESO ISS PBLA13 END 110.6
HIERARCH ESO ISS PBL14 START 162.709
HIERARCH ESO ISS PBL14 END 162.35
HIERARCH ESO ISS PBLA14 START 36.978
HIERARCH ESO ISS PBLA14 END 37.057
HIERARCH ESO ISS PBL23 START 89.854
HIERARCH ESO ISS PBL23 END 89.036
HIERARCH ESO ISS PBLA23 START 82.6
HIERARCH ESO ISS PBLA23 END 82.8
HIERARCH ESO ISS PBL24 START 199.0
HIERARCH ESO ISS PBL24 END 198.802
HIERARCH ESO ISS PBLA24 START 27.683
HIERARCH ESO ISS PBLA24 END 27.822
HIERARCH ESO ISS PBL34 START 164.733
HIERARCH ESO ISS PBL34 END 164.742
HIERARCH ESO ISS PBLA34 START 1.157
HIERARCH ESO ISS PBLA34 END 1.544
HIERARCH ESO ISS AMBI TAU0 START 0.002445
HIERARCH ESO ISS AMBI TAU0 END 0.002939
HIERARCH ESO ISS AMBI TEMP 2.98
HIERARCH ESO ISS AMBI FWHM START 0.87
HIERARCH ESO ISS AMBI FWHM END 0.84