Was meant to be part of a mosaic with the North America / Pelican nebulas but rotation got the better of me and decided to crop it in to just be the Clamshell
Lost most of the Sii from one night, but Lightbucket can only delete a whole nina session not individual subs so this is approximately
~6hr Ha
~6hr Oiii
~3hr Sii
Narrowbanding on an OSC
Altair 26c
Altair 4nm Ha/Oiii and Sii/Oiii filters
astroarg.
