Interferometric fringes from an observation of 3C 273 with the VLTI

Eso_ann11031a_1024

eso_ann11031a June 6th, 2011

Credit: ESO/A. Merand

An interferometric observation of the quasar 3C 273 with the VLTI. The columns marked UT1, UT2, and UT4 show the data from the individual 8.2-metre Unit Telescopes, which were then combined interferometrically. The resultant fringes are shown in the column marked VLTI. The bright feature is the Paschen- emission line from atomic hydrogen gas, redshifted to a wavelength of 2.17 m due to the quasars distance of about two billion light-years. This image is a rare example of a five-second exposure that reveals the fringes. In real use, multiple much shorter 0.3-second observations must be made. It is thanks to the new blind observation mode that these shorter exposures can be successfully combined.

Image Source: https://www.eso.org/public/images/ann11031a/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details

Image Type
Observation
Object Name
3C 273
Subject - Distant Universe
Galaxy > Activity > AGN > Quasar

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_red Very Large Telescope Interferometer (AMBER) Infrared (K) 2.2 µm
Spectrum_base
Arrow_top_red
Eso_ann11031a_1280
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ID
ann11031a
Subject Category
D.5.3.2.1  
Subject Name
3C 273
Credits
ESO/A. Merand
Release Date
2011-06-06T15:30:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/ann11031a/
Type
Observation
Image Quality
Distance Notes
Redshift distance from NED
Facility
Very Large Telescope Interferometer
Instrument
AMBER
Color Assignment
Red
Band
Infrared
Bandpass
K
Central Wavelength
2170
Start Time
Integration Time
5
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
Quality
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
ann11031a
Metadata Date
2011-06-01T12:30:45+02:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.