M17 or the Swan Nebula

Two hours H-alpha

Alluna RC16, AFFC

SBIG STX16803 FW7 + external guider. AstroDon 5nm H-alpha filter

Processing in MaxImDL, Pixinsight and Photoshop CC 2019

Images copyright P & L Ward 2019 all rights reserved

Can you see all 26 grey scales above?