Description
PRODUCT DESCRIPTION
VENUS ULTRAVIOLET FILTER BY OPTOLONG
THE U VENUS FILTER ALLOWS TO TAKE IMAGES (CCD, DSLR, VIDEO) IN THE ULTRAVIOLET SPECTRUM AND THUS TO MAKE THE CLOUDY STRUCTURES VISIBLE IN THE ATMOSPHERE OF VENUS. MANY CAMERAS ARE SENSITIVE IN THE WAVELENGTHS BETWEEN 350 AND 1100 NM. THE FILTER LETS THROUGH APPROXIMATELY 320 TO 400 NM (UV) LIGHT. HOWEVER, YOUR CAMERA MUST NOT HAVE A UV/IR BLOCKING FILTER, BECAUSE OTHERWISE THE LIGHT LEFT THROUGH WOULD BE BLOCKED. SOME REFRACTOR LENSES ALSO BLOCK UV RADIATION. SO: THE IDEAL TELESCOPES ARE THE NEWTONS AND THE RC.
THE ADVANTAGES AT A GLANCE:
IT ALLOWS YOU TO PHOTOGRAPH VENUS IN THE UV SPECTRUM
IT HAS A MULTILAYER ANTI-REFLECTIVE TREATMENT
PRECISION OPTICAL POLISHING UP TO 1/4 LAMBDA ON BOTH SIDES OF THE SUBSTRATE
ATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!
ATTENTION, THIS FILTER MUST NEVER BE USED ALONE FOR SUN OBSERVATION!
SPECIFICATIONS
PERFORMANCE
OPTIC COATING
MULTIPLE
CHASSIS
2"
TRANSMISSION
80
SURFACE ACCURACY1/4
GENERAL
MATERIALSCHOTT GLASS
FILTERTYPE
MANUFACTURING TECHNIQUECOMET FILTER
FIELDS OF USE
USEFUL FOR PHOTOGRAPHY
VENERESI
USABLE FOR VISUALINO OBSERVATIONS
Payment and security
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