A new image has been uploaded. This time it concerns NGC 2359, the Thor’s Helmet Nebula. It is a beautiful emission nebula, imaged in narrowband (HII and OIII). Being a Hydrogen and Oxygen rich nebula, these two filters should provide the “natural” color. In my opinion, this is the case…
The link is:
Or at the “Emission Nebulae” page, as well as at the “Italian Series” page.