Post by brianb on May 20, 2012 10:25:18 GMT
A few more Venuses as the planet moves in towards transit on June 6th. The planet is growing large but the phase is very thin & imaging in ultra violet has become too difficult for me. Seeing has been much worse than it was during April even when clouds have cooperated.
On the 19th I decided to try deliberately overexposing the planet & then winding the contrast way, way up in an effort to catch a trace of brightening of the dark limb (due to refraction in the Venusian atmosphere). Sometimes I think I can make out traces, usually I don't ... there is however a distinct hint of extension of the northern cusp in this image.
On the 19th I decided to try deliberately overexposing the planet & then winding the contrast way, way up in an effort to catch a trace of brightening of the dark limb (due to refraction in the Venusian atmosphere). Sometimes I think I can make out traces, usually I don't ... there is however a distinct hint of extension of the northern cusp in this image.
