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Quad BP Filter II-Quad BP Filter II
Quad BP Filter II-Cytron Japan Co., Ltd.

About This Product

■52mm diameter

Quad BP (quad bandpass) filter is an interference filter that transmits wavelengths around the four main emission lines emitted by celestial bodies, Hα, Hβ, OIII, and SII, and cuts other wavelengths. Since it cuts wavelengths other than those near the four main emission lines, you can expect a powerful light pollution cutting effect. Ideal for photographing nebulae in urban areas using a digital SLR camera or mirrorless camera. The glass material was changed to synthetic silica glass and it became Quad BP Filter II. The characteristics are the same as before. Product features

■4 bright line transmission type

By mainly transmitting wavelengths near the four main emission lines (Hα, Hβ, OIII, and SII) emitted by celestial bodies, and cutting out other wavelengths, the nebula can be seen even in light-polluted areas.

■Reliable domestic quality

A multilayer film is deposited on both sides of a highly precisely polished glass substrate using IAD (ion assisted deposition) coating by a major Japanese deposition manufacturer. The membrane surface boasts high density, homogeneity, and stability.

■52mm diameter

It has a highly versatile filter thread diameter, so it can be used with many telescopes.

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    Quad BP Filter II

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1 Models of Quad BP Filter II

Image Part Number Price (excluding tax) Screw pitch Screw diameter Filter thickness Country of origin
Quad BP Filter II-Part Number-Quad BP Filter II

Quad BP Filter II

$ 136.50〜

0.75mm

52mm

1.5mm

Japan

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