An Infrared Portrait of the Barred Spiral Galaxy Messier 83

The image is a false-colour infrared photo of the nearby barred spiral galaxy Messier 83. It shows the central area in detail.

Technical information: This image of Messier 83 is based on a composite of three images in the filters Ks (NTT + SOFI ; wavelength 2.162 µm; Full-Width-Half-Maximum (FWHM) 0.275 µm; total exposure time on target 49 min; approx. 12 min per quadrant; here rendered as red); J (NTT + SOFI; 1.247 µm; 0.290 µm; 22 min; 5 min; green), and I (Danish 1.54-m + DFOSC ; 0.797 µm; 0.142 µm; 20 min; full-field coverage; blue). As indicated, the Ks and J images were created from exposures of four neighbouring fields. These images were taken in May 2001 during a period with 1.0 arcsec average seeing. The original frames have 1024 x 1024 pixels, each measuring 0.29 arcsec. The resulting mosaic was created from 31 Ks-band object frames and 17 J-band object frames, each with 100 sec exposure time. From each object frame, a sky frame with the same exposure time was subtracted to remove the sky contribution. The final size of the mosaic image is 1905 x 1839 pixels (9.2 x 8.9 arcmin). The I image was observed in February 1998 by Søren Larsen (more information about this image is available in "Astronomy and Astrophysics Supplement", Vol 139, p.393-415, 1999 and at URL: http://nedwww.ipac.caltech.edu/). The original frame size was 2036 x 2042 pixels, each measuring 0.39 arcsec. The pixel size and the field-of-view of this image was changed to match the characteristics of the Ks and J images. North is up and east to the left.

Credit:

ESO

About the Image

Id:eso0136b
Type:Observation
Release date:29 November 2001
Related releases:eso0136
Size:721 x 728 px

About the Object

Name:M 83, Messier 83, NGC 5236
Type:• Local Universe : Galaxy : Type : Barred
• X - Galaxies
Distance:15 million light years

Image Formats

Large JPEG
189.2 KB
Screensize JPEG
260.6 KB

Wallpapers

1024x768
259.8 KB
1280x1024
377.4 KB
1600x1200
483.4 KB
1920x1200
513.8 KB
2048x1536
674.2 KB

Colours & filters

BandWavelengthTelescope
Infrared
Near-IR (I)
797 nm Danish 1.54-metre telescope
DFOSC
Infrared
J
New Technology Telescope
SofI
Infrared
K
2.162 μmNew Technology Telescope
SofI

 

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