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 light years

Image Formats

Fullsize Original
465.8 KB
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 nmDanish 1.54-metre telescope
DFOSC
Infrared
J
New Technology Telescope
SofI
Infrared
K
2.162 μmNew Technology Telescope
SofI

 

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