2" Venus U-Filter (BPU2)

Open until 4:30pmIndependent shop in BallardDirections

Available from Cloudbreak Optics when we last checked, in the last two days. Sold from the shop’s own store; the price there is the one that counts.

Description The Baader Venus filter blocks the entire spectral region from 200nm to 1500nm except for a very narrow bandwidth from 300nm to 400nm in the far violet. Transmission efficiency reaches 80% at the peak. This filter makes it possible to image cloud detail on the surface of Venus. Please Note: The Baader U-Filter is specifically for digital imaging (digital SLR, webcam or CCD). Since visual perception stops at about 400nm (380nm if you're lucky), the light transmitted through the filter