Exposure
ID
GRAVI.2025-08-23T03:49:11.630_1
Header ID
GRAVI.2025-08-23T03:49:11.630
Date updated
2025-08-23 04:00:53 UTC+0000
Release date
2025-08-23 03:49:11 UTC+0000
UTC Start
2025-08-23 03:49:11.630
UTC End
2025-08-23 03:51:51.630
MJD Start
60910.15916238
MJD End
60910.16101423185
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0021089999999999998
Ambient temperature (°C)
2.96
Seeing (arcsec)
1.1
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 46.6000 46.5780 172.3000 172.7000
A0-J2 102.7590 101.8530 109.2000 109.6000
A0-J6 163.4800 163.1440 36.7840 36.8730
B5-J2 91.6380 90.8550 82.2000 82.4000
B5-J6 199.4150 199.2350 27.3570 27.5040
J2-J6 164.7210 164.7250 0.2890 0.6750
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 60910.15916238
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 46.6
HIERARCH ESO ISS PBL12 END 46.578
HIERARCH ESO ISS PBLA12 START 172.3
HIERARCH ESO ISS PBLA12 END 172.7
HIERARCH ESO ISS PBL13 START 102.759
HIERARCH ESO ISS PBL13 END 101.853
HIERARCH ESO ISS PBLA13 START 109.2
HIERARCH ESO ISS PBLA13 END 109.6
HIERARCH ESO ISS PBL14 START 163.48
HIERARCH ESO ISS PBL14 END 163.144
HIERARCH ESO ISS PBLA14 START 36.784
HIERARCH ESO ISS PBLA14 END 36.873
HIERARCH ESO ISS PBL23 START 91.638
HIERARCH ESO ISS PBL23 END 90.855
HIERARCH ESO ISS PBLA23 START 82.2
HIERARCH ESO ISS PBLA23 END 82.4
HIERARCH ESO ISS PBL24 START 199.415
HIERARCH ESO ISS PBL24 END 199.235
HIERARCH ESO ISS PBLA24 START 27.357
HIERARCH ESO ISS PBLA24 END 27.504
HIERARCH ESO ISS PBL34 START 164.721
HIERARCH ESO ISS PBL34 END 164.725
HIERARCH ESO ISS PBLA34 START 0.289
HIERARCH ESO ISS PBLA34 END 0.675
HIERARCH ESO ISS AMBI TAU0 START 0.002054
HIERARCH ESO ISS AMBI TAU0 END 0.002164
HIERARCH ESO ISS AMBI TEMP 2.96
HIERARCH ESO ISS AMBI FWHM START 1.22
HIERARCH ESO ISS AMBI FWHM END 0.98