Alpine Astronomical Used Baader 6.5nm f/2.0 H-Alpha Highspeed CMOS Filter (2" Eyepiece) FCHALHS-2
$229.95
[FACTORY REFURBISHED] - Alpine Astronomical Baader 6.5nm f/2.0 H-Alpha Highspeed CMOS Filter (2" Eyepiece) -Refurb