Quad BP Filter 2"

After fighting with gradient noise from cheaper filters for months, this QBP made the SII and Ha data pop cleanly right away. The 1.5mm fused quartz substrate is noticeably sturdier than the usual glass.

Swapped out my old dual-band for this QBP and the difference in star detail between H-alpha and O-III is immediately obvious. The fused quartz glass gives noticeably sharper focus across the frame.

I was surprised how much cleaner my narrowband data looked after swapping to this 2" QBP. The fused quartz glass feels noticeably heavier and more solid than the cheaper filters I've used.