Alstar 1.25" Narrowband NBPF Hydrogen-a 12nm Filter - Enhances The Contrast Between Object and Sky - Allows You to Take Images Even Under Urban Skies

Alstar 1.25" Narrowband NBPF Hydrogen-a 12nm Filter - Enhances The Contrast Between Object and Sky - Allows You to Take Images Even Under Urban Skies

SVBONY Telescope Filter 1.25 inches UHC Filter Astrophotography to Improve The Image Contrast Reduces Light Pollution (1.25 inch)

SVBONY SV226 Telescope Filter Drawer, Photographic Filters Drawer with M42-M48 Adapter, Double Magnetic Filter Holder for 1.25 and 2 Inches Filter Mounted, for Deep Sky Photography