Exposure
ID
GRAVI.2025-08-24T02:16:25.631_1
Header ID
GRAVI.2025-08-24T02:16:25.631
Date updated
2025-08-24 02:30:43 UTC+0000
Release date
2025-08-24 02:16:25 UTC+0000
UTC Start
2025-08-24 02:16:25.631
UTC End
2025-08-24 02:20:25.631
MJD Start
60911.0947411
MJD End
60911.09751887778
Exposure time (s)
240.0
Validation level
1
Tau 0: Coherence time (s)
0.002694
Ambient temperature (°C)
5.62
Seeing (arcsec)
0.7849999999999999
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 47.6690 47.6090 159.6000 160.2000
A0-J2 123.6130 122.9420 99.0000 99.5000
A0-J6 169.3640 169.2570 32.2360 32.5330
B5-J2 108.4450 107.9530 76.5000 76.8000
B5-J6 201.8850 201.8760 21.4200 21.7690
J2-J6 165.7620 165.6720 348.9600 349.4800
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 60911.0947411
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME HD 170887
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 256.0
HIERARCH ESO DET2 SEQ1 DIT 30.0
HIERARCH ESO DET2 NDIT 8
HIERARCH ESO ISS PBL12 START 47.669
HIERARCH ESO ISS PBL12 END 47.609
HIERARCH ESO ISS PBLA12 START 159.6
HIERARCH ESO ISS PBLA12 END 160.2
HIERARCH ESO ISS PBL13 START 123.613
HIERARCH ESO ISS PBL13 END 122.942
HIERARCH ESO ISS PBLA13 START 99.0
HIERARCH ESO ISS PBLA13 END 99.5
HIERARCH ESO ISS PBL14 START 169.364
HIERARCH ESO ISS PBL14 END 169.257
HIERARCH ESO ISS PBLA14 START 32.236
HIERARCH ESO ISS PBLA14 END 32.533
HIERARCH ESO ISS PBL23 START 108.445
HIERARCH ESO ISS PBL23 END 107.953
HIERARCH ESO ISS PBLA23 START 76.5
HIERARCH ESO ISS PBLA23 END 76.8
HIERARCH ESO ISS PBL24 START 201.885
HIERARCH ESO ISS PBL24 END 201.876
HIERARCH ESO ISS PBLA24 START 21.42
HIERARCH ESO ISS PBLA24 END 21.769
HIERARCH ESO ISS PBL34 START 165.762
HIERARCH ESO ISS PBL34 END 165.672
HIERARCH ESO ISS PBLA34 START 348.96
HIERARCH ESO ISS PBLA34 END 349.48
HIERARCH ESO ISS AMBI TAU0 START 0.003054
HIERARCH ESO ISS AMBI TAU0 END 0.002334
HIERARCH ESO ISS AMBI TEMP 5.62
HIERARCH ESO ISS AMBI FWHM START 0.73
HIERARCH ESO ISS AMBI FWHM END 0.84