3nm Filters Have Returned!

My 3nm filters for the Ha, OIII, SII, and NII gas emission lines have been returned after inspection from the manufacturer!  Now, I can return to working on getting some color images in the Huble Palette format and RGB nebulosity…

I had to get the OIII filter replaced due to manufacturer defects.  So, at the same time, I had Astrodon inspect the others, just in case.  After all, these filters are just shy of $1,000 a piece!