February 2012: Horsehead nebula and the Cone nebula

It’s been a long, inactive winter for me (in terms of astrophotography). After more than two months counting sheep, I finally saw the opportunity, in spite of the freezing temperatures, to keep on my astrophotography learning journey. Thanks God, my remote, wifi-based setup paid off, so I could face long exposures while warm inside the house and keeping tight control of the imaging session.

This is a composite of almost one hour of H-alpha exposures (5 frames, 700 seconds each), and about an hour and a half through RGB filters. The H-alpha filter was mandatory for trying to image the fine details and vertical filaments of the nebula. Even so, the noise in the image background is apparent, clear indication that, for this object and the used setup, more signal was needed.

Go to this object description and this image technical detail.

And this is the Cone Nebula, in the middle of the rich star field of the Christmas Tree Cluster. This is a composite of  almost 3.000 seconds thru an H-alpha filter, and one hour thru RGB. The nebulosity is everywhere in this frame, so that the processing was not straightforward.

Go to this object description and this image technical detail.