What filter for asi294mc pro

[lnlarxg]

Need some advice Pls 🙂

i am under bortle 4 sky, imaging using f4 10” astrograph. What filter would you recommend for a asi294mc pro?  

i have always shot with a modded DSLR, and I felt the astronomik cls filter definitely helped 

thanks 😁

[Messy Hair 101]

Not that I know what I'm talking about but I hear good things about the Optolong L-Enhance filter. You probably won't need the L-Pro under class 4 skies.

[R26 oldtimer]

If you're after RGB images and just want to fight light pollution, then go for the L-pro or any other lp filter. But the L-enhance (or the newer and tighter L-extreme) is actually a dual narrowband filter which actually produces HOO images right out of the box when used with an osc camera like the 294.

You can split the channels to get separate mono Ha out of Red and OIII (plus some Hb) out of Green and Blue, and then use something like pixelmath in PI to make a third synthetic channel.