①Over 90% maximum transmittance; the multiband filter minimizes light loss; it accurately reproduces the true colors of celestial bodies; it offers more vivid colors; it enhances your stargazing experience by providing richer hues.②Maximum cutoff depth OD4; astrophotography filters effectively block unwanted light and offer better light pollution suppression while capturing multiband wavelengths; they are suitable for photographing colorful celestial bodies.③Product specifications; 2" size; 90% maximum transmittance; OD4 cutoff depth; M48*0.75 thread; 2mm substrate thickness; 44mm net aperture; 60/40 surface finish; λ/2 surface parallelism; and wavelength working range 300-1000 nm④ Wavelength range 300-1000 nm; multiband filter to effectively combat light pollution; wider coverage area⑤ Product details; the multiband star field filter has a metal edge; the filter gear and filter mount are all designed to improve durability, fit, and overall image quality⑥ Wide compatibility; compatible with astrophotography systems such as SV209 (not included); SV550 (not included); SV226 (not included); SV405CC (not included); making it suitable for photographing reflection nebulae and galaxies⑦ Waste light; the SV260 filters waste light from artificial lighting, including mercury vapor lamps and high and low pressure sodium vapor lamps; and unwanted natural light caused by the emission of neutral oxygen into our atmosphere (i.e., skyglow)
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