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William Shaheen | all galleries >> Astronomy >> Astro Images by Subject > M42 - The Orion Nebula 10-Jan-2011
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M42 - The Orion Nebula 10-Jan-2011

M42 - The Orion Nebula 10-Jan-2011

A single 120 second jpeg exposure at ISO 800 captured by ImagesPlus. No darks, flats, bias frames. Post processing: Curves adjustment in Nebulosity2 and contrast adjustment and resized in ThumbsPlus.

Telescope configuration: EdgeHD 9.25 (2350mm, f/10) and no focal reducer, imaged at medium resolution (3456x2304), yielding an image scale of 0.93 arc-seconds/pixel and a FOV of 21.7x32.6 arc-minutes. Focused using a Bahtinov focus mask. Mount: Losmandy G11 w/Gemini. Autoguided with a Lodestar autoguider connected to a Stellarvue 50mm finderscope and a Celestron 2x Barlow and PHD autoguiding software.

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