Exposure
ID
GRAVI.2025-07-24T03:57:10.424_1
Header ID
GRAVI.2025-07-24T03:57:10.424
Date updated
2025-07-24 04:10:39 UTC+0000
Release date
2026-07-24 04:10:39 UTC+0000
UTC Start
2025-07-24 03:57:10.424
UTC End
2025-07-24 03:59:50.424
MJD Start
60880.16470398
MJD End
60880.16655583186
Exposure time (s)
160.0
Validation level
1
Tau 0: Coherence time (s)
0.003661
Ambient temperature (°C)
12.83
Seeing (arcsec)
0.47
Observation
ID
68750
Category
science
Program ID
115.282E.001
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
51155
Name
Y_Oph
RA
268.159
DEC
-6.1436
Instrument
Interferometer
VLTI
Instrument
GRAVITY
Instrument mode
HIGH-COMBINED
Instrument sub-mode
SINGLE
Stations
A0 G1 J2 C1
Projected baselines
Baseline Length start Length end Angle start Angle end
A0-G1 80.0200 79.5470 120.7000 121.0000
A0-J2 118.7680 118.1040 95.5000 95.6000
A0-C1 20.0010 19.8830 120.7150 120.9980
G1-J2 57.5810 57.4820 59.1000 59.2000
G1-C1 60.0190 59.6640 300.6950 300.9780
J2-C1 101.0400 100.5100 270.6220 270.7050
Header: used keywords
Key Value
HIERARCH ESO OBS PROG ID 115.282E.001
HIERARCH ESO DPR CATG SCIENCE
HIERARCH ESO DPR TYPE OBJECT,SINGLE
MJD-OBS 60880.16470398
HIERARCH ESO DPR TECH INTERFEROMETRY,DIRECT
HIERARCH ESO OBS TARG NAME V Y Oph
HIERARCH ESO INS SOBJ NAME Y_Oph
RA 268.159
DEC -6.1436
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 G1
HIERARCH ESO ISS CONF STATION3 J2
HIERARCH ESO ISS CONF STATION4 C1
EXPTIME 178.0
HIERARCH ESO DET2 SEQ1 DIT 10.0
HIERARCH ESO DET2 NDIT 16
HIERARCH ESO ISS PBL12 START 80.02
HIERARCH ESO ISS PBL12 END 79.547
HIERARCH ESO ISS PBLA12 START 120.7
HIERARCH ESO ISS PBLA12 END 121.0
HIERARCH ESO ISS PBL13 START 118.768
HIERARCH ESO ISS PBL13 END 118.104
HIERARCH ESO ISS PBLA13 START 95.5
HIERARCH ESO ISS PBLA13 END 95.6
HIERARCH ESO ISS PBL14 START 20.001
HIERARCH ESO ISS PBL14 END 19.883
HIERARCH ESO ISS PBLA14 START 120.715
HIERARCH ESO ISS PBLA14 END 120.998
HIERARCH ESO ISS PBL23 START 57.581
HIERARCH ESO ISS PBL23 END 57.482
HIERARCH ESO ISS PBLA23 START 59.1
HIERARCH ESO ISS PBLA23 END 59.2
HIERARCH ESO ISS PBL24 START 60.019
HIERARCH ESO ISS PBL24 END 59.664
HIERARCH ESO ISS PBLA24 START 300.695
HIERARCH ESO ISS PBLA24 END 300.978
HIERARCH ESO ISS PBL34 START 101.04
HIERARCH ESO ISS PBL34 END 100.51
HIERARCH ESO ISS PBLA34 START 270.622
HIERARCH ESO ISS PBLA34 END 270.705
HIERARCH ESO ISS AMBI TAU0 START 0.003546
HIERARCH ESO ISS AMBI TAU0 END 0.003776
HIERARCH ESO ISS AMBI TEMP 12.83
HIERARCH ESO ISS AMBI FWHM START 0.48
HIERARCH ESO ISS AMBI FWHM END 0.46