Antlia Filters VS Alnitak and a Hidden Galaxy
After 4 years, I'm going back to the Horsehead Nebula (and Alnitak) to see if these 3nm SHO filters can deal with Alnitak's halo. Also, thanks to a gentle reminder from the Euclid Space telescope team, I'm trying to image the Hidden Galaxy, IC 342, from my Bortle 8 skies.