Nebulosity in Orion
Nebulosity in Orion


Canon 135mm IS L f/2


Losmandy G11


Canon T2i


Astronomik Luminance Clip


October 9th, 2012


Mountain Observatory


L.M. 3.2 (twilight)


OSC 10 minutes

The region seen here is shows a field about as wide as binoculars display. The three stars of Orion's belt (Mintaka, Alnilam, and Alnitak) pour into the Horsehead and Flame nebulae seen bottom left of the image. Faint traces of gasses and dust then fill the space as the eye is lead over to the Orion Nebula. Here, new stars are forming in what is known as a stellar nursery. Just to the left of the Orion Nebula is a fainter nebula known as the Running Man nebula.

This image was taken after imaging auroras all night, and instead of packing to head home as soon as Astronomical twilight started, I decided to do some test imaging purely for testing purposes.

I chose to use my Canon T2i using the Canon 135mm IS L f/2 lens stopped down to f/2.8 to increase sharpness in stars at the edge of the image. Stopping the lens down also gives diffraction spikes to the brighter stars since the edges of the aperture blades are not curved surfaces. I must have forgotten my UV filter attached to the lens however, as reflections of the bright stars in Orion's Belt managed to shop up as aberrations on the right side of the image.

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