iOptron OIII Narrowband Filter -1.25"

Finally, an OIII filter that actually cuts through my local light pollution without killing the faint stuff. The 7nm bandwidth lets me see the Veil Nebula's detail in my 8-inch dob better than my old generic filter ever did.

The 500nm isolation on this filter really made the Veil Nebula pop during last night's session, even under my suburban sky. It cuts through light pollution better than my old UHC filter did. Definitely a keeper for my astrophotography setup.

I mounted this in my 1.25" eyepiece and the difference on the Ring Nebula was immediate—the OIII bandpass really made the central star pop. It cuts out skyglow in my suburban backyard without dimming the target too much.