Lights from ... Orion Nebula (M42)
⇒ This winter (December 2016), I returned to photograph a very popular target of the deep sky: the great Orion nebula, which is one of the brightest nebulae in the sky.
⇒ 3 years after my first image of this object (which was also my first real astrophotography at prime focus of a telescope), I decided to start again by significantly increasing the exposure time.
⇒ 3 years after my first image of this object (which was also my first real astrophotography at prime focus of a telescope), I decided to start again by significantly increasing the exposure time.
This time, the exposure time reaches 1 hour! (against 5 minutes for the 2013 version).
⇒ To obtain this result, it was therefore necessary to stack 124 images of 30 seconds each with software. This treatment process reduces noise while increasing the exposure time.
This explains why the image is softer and reveals more details about the interstellar gas extensions of the nebula.
Technical Details....
Canon Rebel T3i + 200/800 mm Newtonian Telescope + Meade LXD75 tracking mount
→ 124 stacked images of 30 seconds exposure each
→ ISO 800
→ 800 mm
→ f/4
DSS + Lightroom editing
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