Waid Observatory

Object: M42 - The Orion Nebula

Date: Nov. 22, 2024  -  Location: Davis Mountains west of Fort Davis, TX
Telescope: Veloce RH200 f3   -  Mount: Paramount MX  - Camera: QSI-640
Exposure: SII Ha & OIII 24x2 min. each filter - R G & B 24x10 sec. each filter - All Bin 1x1

Click on the image to view at higher resolution.


 
M42


M42 - The Great Nebula in Orion

Located in the constellation of Orion the Hunter at a distance of approximately 1,500 light years1, is The Great Nebula in Orionn1.  Designated M42, it is the brightest diffuse nebula in our sky1.  Due to its prominence, the Orion Nebula is probably the most studied3, and imaged, HII region by both amateur and professional astronomers.  M42 is located around the second star in the "Sword of Orion" and is visible during the winter months in the Northern Hemisphere.  Under moderately dark skies, it is visible to the naked eye as a fuzzy star.  It is a rewarding and impressive sight in telescopes of every size, from the smallest glasses to the greatest Earth and Space telescopes.  The stars in the nebula are very young and observations from the Hubble Space Telescope2 have detected new stars currently being formed from the gasses and dust of the nebula.  Some of the recently formed young stars can be seen as bright spots in the clouds of gas.  These stars are still partially obscured by the nebula gas.  The bright central portion of the nebula is known as the Trapezium.  Its name comes from the central cluster of four bright young stars arranged in a trapezoidal asterism2.  Under good seeing, and using a small amateur telescope, up to six stars can be detected in the Trapezium cluster.  The small, circular, nebula located just above the "body" of M42 is designated M43 and is included as a separate object in Messier's catalog.

The image is orientated with north at the top and east to the left.  Image integration and processing were accomplished using the software applications PixInsightTM and PhotoshopTM.  The image was assembled by mapping SII filtered data to red, Ha filtered data to green, and OIII filtered data to blue.  This method of image assembly is known as the Hubble Palette.  The stars were overlaid with data from a red, green, and blue filtered image.  A "near true color" version of the image may be viewed here.

References
1Wikipedia: https://en.wikipedia.org/wiki/Orion_Nebula
2NASA: https://www.nasa.gov/feature/goddard/2017/messier-42-the-orion-nebula
3B. Balick, et al: https://articles.adsabs.harvard.edu/pdf/1974PASP...86..616B

 
Copyright Donald P. Waid