125 mm Mak-Cass., x150; W44A blue filter. (A) 2011 Oct 5d 1250UT, (B) 2011 Nov 9d 1245UT and (C) 2011 Nov 18d 1250UT. South is uppermost

Violet and ultraviolet images of Venus during 2011 May-July by Dennis Put arranged so that the vertical columns show near-identical longitudes. (In this interval of time the average drift of equatorial features to the right would be just 8.6^o.) An image by Willem Kivits (355 mm SCT, DMK camera, marked ‘K’), has been added for completeness.

Seeing was not good.

First Venus image from 2010 western elongation. Seeing was average but atmosphere was unstable, 15º above the horizon. Taken from Tehran 03:49 UT.

Venus in 1000 nm light. Venus is now a very thin crescent. The dark and bright  formations are clearly visible.

It is one day apart between my image and an image by Paul Maxson of Arizona (July 19th and 20th, respectively).  I am trying to find out if this intense white spot has anything to do with the volcanic activity from below or just an ordinary feature that appears near the South Polar Region (SPR) or cap which is quite active at times. But it is more of an intense white spot than just a bright region. According to my measurements at -50 degrees, this feature is too far north to be considered as part of the SPR vortex and too far south from the volcanoes regions as Mike Mattei of ALPO pointed out. Otherwise, this is perhaps an outbreak phenomena in the upper atmosphere.

According to Maxson's fine image, the white spot is just beyond the SE limb and there is a stream or a veil attached to it. It must be from the atmospheric motion that causes this. More work is needed to track down this feature. This part of the atmosphere will be facing us Thursday and Friday.

This is from Dr. Sanjay Limaye:

Tha bright cloud cap that is found at high latitudes has been seen to extend at some longitudes to quite a long distance towards the equator, showing quite a bit of longitudinal asymmetry.  There have been several such "bright" occurrences observed over the last three years.  The lates images from July 16 did not show any such, but perhaps because the longitude observed may have been different.  Stay tuned.

Earlier today, I have posted an alert of a very bright white spot on Venus near the SE limb. I have seen  bright spots before but this one is an exceptional bright and quite intense area. This may be due to a possible outbreak in the UV atmosphere.

Mike Mattei of ALPO have posted Volcanoes alerts before. Is this possible of a volcano activity??? We need more observations around the same time of my images but the bright spot may change its configuration due to the rapid circulation of the atmosphere even after one rotation. Twenty-four hrs. later after my images, the bright spot may have rotated off the SE limb.

Please, let me know if you have observed and/or imaged Venus around the same time as mine. I will look into it with Mike Mattei.