This report is also made by Bernd K. of an automated, shuttered video observation recorded by Jörg S. of Herford. He uses an ASI 178mm with 60 sec integration time. The images can be seen here (cropped and contrast streched):
http://www.sternwarte-herne.de/misc/20170423_2212UT_JS_Herford_crop_cs.jpg
and here (original):
http://www.sternwarte-herne.de/misc/20170423_2212UT_JS_Herford.jpg
The shutter brakes are only hardly visible when zooming into the cropped image.
The brightness is only a rough estimate. Also the duration can't be determined precisely because of the integration time of 60 sec. I estimated the coordinates of the endpoints in Jörgs image by visual comparison with Guide 9.
