The Galactic Plane in Radio

Minimum credit line: Image courtesy of NRAO/AUI and Michael Bietenholz, with thanks to NRAO for providing the NVSS data(for details, see Image Use Policy).

About this Image

As above, so Below: the Galactic Plane in Radio. A section of the Galactic plane as seen in the radio is shown both as the sky and also rendered as a height-map on the ground, with the height of the "mountains" representing the brightness of the radio sky. The radio observations were part of a monumental radio survey made of the whole sky north of a declination of -40 degrees with the NRAO Very Large Array telescope. The survey data consists of 2326 images each covering 4 degrees. The field of view in this image is approximately 20 degrees, and the galactic plane is the diagonal band of sources in the sky and "mountains" on the ground.

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Technical Data

    Telescope VLA 
    Date of Observation 1993-10-23 
    Type of Observation Continuum Observations 
    Band L 
    Wavelength 20 cm 
    Frequency 1.4 GHz 
    Center of Image RA: 18:40:0.00, Dec: -1:00:0.00 (J2000)  
    Field of View 30.0000 x 20.0000 degrees  
    Technical Caption A mosaic made from 30 NVSS image cubes (for a description of the NVSS survey, see Condon et al, 1998, AJ, 115, 1693) The resolution is 45". About 16 degrees of the Galactic plane is visible. Both the sky and the ground renditions have a quasi-logarithmic brightness transfer function. Pink regions in the ground plane show regions of polarized emission. Prominent sources include the supernova remnants W41, W44, Kes 75, 4C-04.71, 3C397 and many others.  

  • Astronomical database entries for W41
    • Query NED for images of W41
    • Query SIMBAD for more W41 data


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