Antilhue - Chile

NGC 1313 in Reticulum
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Image Data

Designation NGC 1313,  Bennett 13
Object type Spiral galaxy
Coordinates 03 h 18 min      - 66° 30'    Reticulum  (Ret)
Description In visible light, NGC 1313 seems dominated by scattered patches of star formation which give our picture a rather ragged appearance.  The clouds of bluish stars seem to have burst into existence at random, without the normal trigger gravitational interaction or even a distinct spiral to prompt them.  Star formation seems to have occurred in a series of irregular, self-sustaining bursts.  However, a very deep image shows that the outer parts of galaxy are also very disturbed.

Seen with a radio telescope, the galaxy is rich in hydrogen, the raw material of stars, and the gas circulates around the centre of the galaxy in a well ordered way, apparently hardly affected by the starburst activity or other irregularities that so colour our visual impression of this unusual galaxy.  NGC 1313 is at a distance of about 15 million light years, close enough for some of its brightest stars to be seen as individuals.

Entry from NGC 2000.0 (R.W. Sinnott, Ed.) © Sky Publishing Corporation, 1988

Click here or on the image for a 1600 pixel screen resolution.  North is towards the bottom (180°) in this 25 x 37 arcmin field of view.  

Exposure NRGB 160:80:80:80 min @ -20°C,  all exposures unbinned
Camera SBIG STL-11000M selfguided with AO-L (first light) +  Astronomik Type II filterset
Optics RCOS 14.5" Ritchey-Chrétien @ f/9 (prime focus)
Mount Astro-Physics AP1200GTO
Software MaxIm DL/CCD,  Sigma Pre Beta 11,  Registar,  Adobe Photoshop CS
Location - Date - Time San Esteban (Chile) - 22Oct2006 @ 07:00 UTC 
Conditions Transparency 6/10,  Seeing 6/10, Temperature  + 12° C