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M8 (NGC 6523),  the Lagoon Nebula, in Sagittarius

M8, the Lagoon nebula,  is the brightest emission nebula visible from the northern hemisphere in summer (the Orion nebula of the winter sky is brighter). This huge mass of star-forming hydrogen gas is about 60 by 40 light years in size and only about 5200 light years distant from Earth. It is located in the adjoining Sagittarius-Carina spiral arm of our galaxy and closer to the center of the Milky Way. The red color is due to the emission of long wavelength light (primarily 656.3  nM) excited by radiation from hot young stars buried in the gas.

 Date  26 August 2005
 Scope  Astro-Physics 130 f/4 (0.67 reducer) on AP 1200 GTO mount                  
 Exposure

 ST-10XME CCD camera, -15 C, 12 x 5 min each R, G, B frames with Astrodon filters;

   guided with internal chip      

 Processing 

 Acquired, calibrated, and combined in MaxIm 4.11.  Stretched with levels and curves, unsharp

    masked and high-pass filtered in PhotoShop. Noise reduction with Noise Ninja.

 

bacK to Nebulas

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