Ground Based View of Venus
These views of Venus were obtained by Arnaud van Kranenburg on 10 September 2006, using a Celstron C9.25 telescope with a set of RGB filters (Astronomik) and a Violet bandpass filter at 390 nm, as well as two Schott longpass filters.
Observing Log Details
Seeing was worse than yesterday, although visually it was hard to distinguish. The Violet image is of poorer quality though. I was able to obtain an entire set of images at different wavelenths.
The 1000 nm longpass shows detail again, but only at strong contrast and wavelet enhancement. I also added contrast and wavelet enhancements to the blue channel, which then shows the same markings as the Violet image.
Venus is getting closer and closer to the Sun and I suspect these will be the last violet images I will be able to obtain before the conjuction.