Celestron 11 + hyperstar for f/2 imaging, pictures from the dark site
Image Description:
The Witch Head is one of my favorite objects. 90mn of exposure with the C11 hyperstar at f2 from Columbus in February 2017.
Then a long saga to remove the streaks of light from neighbor star Rigel, leading to the development of a new denoise module based on Radon transforms.
Image Title:
Witch Head