I image lots of nebula from the city, usually from my bortle 9 backyard and have lots of images I'm happy with, many are in my gallery. Recently I started using a Radian "Tri-band" filter with my OSC camera and after learning the processing techniques end up some really good nebula images. These dual, tri ,and quad band OSC filters block out more than 90% of the light pollution - but takes WAY longer to capture enough data for high detail - me and many others have found it to be worth it - if we can't/don't want to drive to darker skies.
everything in this album from about April through September 2024 was done with a Ridian Tri band filter in my bortle 9 backyard
Here's the most challenging for me so far cause it's pretty faint
need about 4x the data to get more of the faint wings on M27, but off to a good start - all bortle 9
I also have very bright LED street lights BUT my house acts as a shield to prevent those street lights from going directly into my scope and really doesn't effect the sky above me - and I almost never shoot lower than 45 degrees above the horizon - and the sky above that angle may be closer to bortle 8 - the closer we are to the zenith the darker the (moonless) sky will usually be.
If you aren't surrounded by dense city lights your bortle might not be as bad as you think. I'm in the L.A. metropolis = bortle 9, if your more tha 20 miles from a major city it will be much better.
This Light Pollution Map is pretty accurate and showed me how I can get to bortle 5 skies by driving 25 miles in one direction, - or 15 miles in another direction BUT that location has much more "marine layer" which is a lot like fog..
Edited by Craigar, Today, 12:17 PM.