Here’s the result using the Canon 60Da on my little tracker head. I spent a lot of time fooling with these in Pixinsight and then Photoshop. Unusual for this part of New Mexico, I had problems with gradients due to smoke from wildfires in Arizona. (See https://www.jjmcclintock.com/?p=139) I believe this is stacked from 5-180 second exposures. Images were collected May 18, 2012.
The inch or so of rain that came with the Derecho is making the beans happy. while they look (to me) like they would be attractive to insects, soybeans are self-pollinating. And they are very accommodating to summer conditions. Only about 30% of the flowers will produce seeds, the rest aborting due to dry or unfavorable conditions. The extended period of blooming takes advantage of better conditions when (if) they occur.