Exposure
ID
GRAVI.2025-08-23T03:39:11.604_1
Header ID
GRAVI.2025-08-23T03:39:11.604
Date updated
2025-08-23 03:50:37 UTC+0000
Release date
2025-08-23 03:39:11 UTC+0000
UTC Start
2025-08-23 03:39:11.604
UTC End
2025-08-23 03:41:51.604
MJD Start
60910.15221764
MJD End
60910.15406949186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.0023750000000000004
Ambient temperature (°C)
2.94
Seeing (arcsec)
1.155
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 46.6840 46.6580 170.8000 171.2000
A0-J2 105.7460 104.8790 107.8000 108.2000
A0-J6 164.5500 164.2460 36.4530 36.5560
B5-J2 94.1900 93.4530 81.6000 81.8000
B5-J6 199.9720 199.8160 26.8350 26.9930
J2-J6 164.7300 164.7240 358.9840 359.3690
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 60910.15221764
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 46.684
HIERARCH ESO ISS PBL12 END 46.658
HIERARCH ESO ISS PBLA12 START 170.8
HIERARCH ESO ISS PBLA12 END 171.2
HIERARCH ESO ISS PBL13 START 105.746
HIERARCH ESO ISS PBL13 END 104.879
HIERARCH ESO ISS PBLA13 START 107.8
HIERARCH ESO ISS PBLA13 END 108.2
HIERARCH ESO ISS PBL14 START 164.55
HIERARCH ESO ISS PBL14 END 164.246
HIERARCH ESO ISS PBLA14 START 36.453
HIERARCH ESO ISS PBLA14 END 36.556
HIERARCH ESO ISS PBL23 START 94.19
HIERARCH ESO ISS PBL23 END 93.453
HIERARCH ESO ISS PBLA23 START 81.6
HIERARCH ESO ISS PBLA23 END 81.8
HIERARCH ESO ISS PBL24 START 199.972
HIERARCH ESO ISS PBL24 END 199.816
HIERARCH ESO ISS PBLA24 START 26.835
HIERARCH ESO ISS PBLA24 END 26.993
HIERARCH ESO ISS PBL34 START 164.73
HIERARCH ESO ISS PBL34 END 164.724
HIERARCH ESO ISS PBLA34 START 358.984
HIERARCH ESO ISS PBLA34 END 359.369
HIERARCH ESO ISS AMBI TAU0 START 0.002393
HIERARCH ESO ISS AMBI TAU0 END 0.002357
HIERARCH ESO ISS AMBI TEMP 2.94
HIERARCH ESO ISS AMBI FWHM START 1.1
HIERARCH ESO ISS AMBI FWHM END 1.21