Since I live under a bortle scale 6-7 sky, a light pollution filter is a must. I have the option to choose from an Astronomik CLS Clip in or an Optolong L-PRO 2" light polution filter. 

 

 

 

 

 

 

 

 

 

 

 

Astronomik 12nm H-alpha CCD filter 1,25" in 3D printed clip in holder (link to tutorial)