Guys,
I have just learnt that Kogichi Itagaki discovered a new supernova in Messier 101. On the night of 9th and 10th May I was picturing this object with Sony A7iii with Sony 200-600 F/5.6-6.3 G OSS lens. I send you the photo (processed) that you may find useful – I think the supernova is visible. Picture data: 19 x 360s @ 600mm, ISO 800, f/6.3, no filter.
Regards Olaf