Optolong Venus U Filtro Planetário
Optolong Venus U Filter for Mars
Venus-U filter makes it possible to obtain photographs, CCD or video images in the UV-A (320-400nm) and observe Venus’ cloud structures.
Use with monochrome CCD cameras and you need to remove the cover glass of sensor and internal UV-IR blocker in order to pass UV light. The same holds true for mono DSLRs that its built-in low pass filter needs to be removed. What’s more, you need a special UV lens together with camera body. The sensor of CCD or CMOS cameras is capable of detecting light in the 350-1100nm range.
Act as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure.
Ultraviolet photography finds practical use in medicine, dermatology, botany, criminology and theatrical applications.
Especificações
Imposto e Modo de Entrega
Garantia
Sbustrate: B270
Thickness: 1.85mm
Tave: T>90%
Blocking range: 200-1100nm
Blcoking depth: light pollution line blocking >99%
Surface quality: 60/40
Transmitted Wavefront RMS: λ/4
Parallelism: 30s
Avaliações
Excelente filtro para fazer imagens do Planete Vênus (detalhes da atmosfera).
Excelente compra, ótimo custo-benefício para obter mais detalhes das nuvens da atmosfera superior do Planeta. Quando utilizado com câmera mono, no canal (B), ajuda muito "puxar" mais detalhes ocultos.
O filtro entrega um qualidade superior nas fotos de Vênus.