That's a remarkable image, Martin. It looks as if there are a couple of slightly darker patches at lower right around the 4 o'clock position? If they are real they could be surface features: do they appear on any of your other images, or are they just artefacts?

I look forward to seeing more results like this. Well done!

Chris

Thanks Chris.

The larger, elongated, slightly darker region area near the limb at 4 o'clock that is on this image is also at the same position and with a similar shape on a second independent Winjupos combination based on 7x3min videos taken with a different camera in the same session- the Chameleon3 camera I mentioned above. Like with your independent stacks with your Mercury images it gives some assurance that this is a more than likely real feature. I have data from the following night and we'll see if it shows at a similar location on there too.

The Venus bright crescent is not a mask placed onto the image to define the shape- it comes out like that in the processing BTW

Cheers,
Martin

This is an amazing image, Martin!

Thanks Jeremy,

This is work in progress and I have more results to post but thought that was an aesthetically pleasing one to start with. Hope to gather more data as the crescent narrows but opportunities depend very much on the weather and time is running out with Venus rapidly approaching inferior conjunction.

Martin