Echelle spectrum of SN1987A

Eso_eso9944b_1024

eso_eso9944b October 5th, 1999

Credit: ESO

This shows the raw image, as read from the CCD, with the recorded echelle spectrum of SN1987A. With this technique, the supernova spectrum is divided into many individual parts (spectral orders, each of which appears as a narrow horizontal line) that together cover the wavelength interval from 479 to 682 nm (from the bottom to the top), i.e. from blue to red light. Many bright emission lines from different elements are visible, e.g. the strong H-alpha line from hydrogen near the centre of the fourth order from the top. Emission lines from the terrestrial atmosphere are seen as vertical bright lines that cover the full width of the individual horizontal bands. Since this exposure was done with the nearly Full Moon above the horizon, an underlying, faint absorption-line spectrum of reflected sunlight is also visible. The exposure time was 30 min and the seeing conditions were excellent (0.5 arcsec).

Provider: European Southern Observatory

Image Source: https://www.eso.org/public/images/eso9944b/

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
SN 1987A Spectrum
Subject - Local Universe
Star > Evolutionary Stage > Supernova

Color Mapping

  Telescope Spectral Band Wavelength
Grayscale VLT (UVES) Optical -
Eso_eso9944b_1280
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ID
eso9944b
Subject Category
C.3.1.8  
Subject Name
SN 1987A, Spectrum
Credits
ESO
Release Date
1999-10-05T00:00:00
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso9944b/
Type
Observation
Image Quality
Distance Notes
Facility
Very Large Telescope
Instrument
UVES
Color Assignment
Grayscale
Band
Optical
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
Equinox
Reference Value
Reference Dimension
4096.0, 4208.0
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
eso9944b
Metadata Date
2016-07-20T13:50:28+02:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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