astrodon - 50mm dia. CLEAR Filter

Clear optical windows.  Pass all frequency of light to the detector.
IF your optical system is well color corrected. We have reduced the UV contribution in the lumincance and blue filters for this
reason to reduce star bloat. The Clear (no near-IR blocking) may produce bloated stars if your optical system has poor near-IR
focus. Use the near-IR-blocked Luminace filter in this case. The Clear filter is likely a better choice for reflectors, such as
Ritchey-Cretiens, rather than refractors or camera lenses